变速器设计外文翻译

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变速器设计,中英文带翻译

原文：Transmission designAs we all know automobile engine to a certain speed can be achieved under the best conditions, when compared issued by the power, fuel economy is relatively good. Therefore, we hope that the engine is always in the best of conditions to work under. However, the use of motor vehicles need to have different speeds, thus creating a conflict. Transmission through this conflict to resolve.Automotive Transmission role sum up in one sentence, called variable speed twisting, twisting or slow down the growth rate by increasing torsional. Why can slow down by twisting, and the growth rate but also by twisting? For the same engine power output, power can be expressed as N = WT, where w is the angular velocity of rotation. When N fixed, w and T is inversely proportional to the. Therefore, the growth rate will reduce twisting, twisting slowdown will increase. Automotive Transmission speed gear based on the principle of variable twisted into various stalls of different transmission ratio corresponding to adapt to different operational conditions.General to set up a manual gearbox input shaft, intermediate shaft and output shaft, also known as the three-axis, as well as Daodang axis. Three-axis is the main transmission structure, input shaft speed is the speed of the engine, the output shaft speed is the intermediate shaft and output shaft gear meshing between different from the speed. Different gears are different transmission ratio, and will have a different speed. For example Zhengzhou richan ZN6481W2G manual transmission car-SUV, its transmission ratio are: 1 File 3.704:1; stalls 2.202:1; stalls 1.414:1; stalls 1:1 5 stalls (speeding file) 0.802: 1.When drivers choose a launch vehicle stalls, Plectrum will be 1 / 2 file synchronization engagement with a back stall gear and output shaft lock it, the power input shaft, intermediate shaft and output shaft gear of a stall, a stall the output shaft gear driven, and the output shaft power will be transmitted to the drive shaft (red arrow). A typical stall Biansuchilun transmission ratio is 3:1, that is to say three lapsto the input shaft and output shaft to a circle.When the growth rate of car drivers choose two stalls, Plectrum will be 1 / 2-file synchronization and file a joint separation after 2 stall and lock the output shaft gear, power transmission line similar, the difference is that the output shaft gear of a stall 2 stall replaced by the output shaft gear driven. 2 stall Biansuchilun typical transmission ratio is 2.2:1, 2.2 laps to the input shaft and output shaft to a circle than a stall speed increase, lower torque.When refueling vehicle drivers growth stalls option 3, Plectrum to 1 / 2 back to the free file-synchronization position, and also allows the 3 / 4 file synchronization Mobile stall until 3 in the output shaft gear lock, power can be into the shaft axis - intermediate shaft - the output shaft of the three stalls Biansuchilun, led through three stalls Biansuchilun output shaft. 3 stalls typical transmission ratio is 1.7:1, 1.7 laps to the input shaft and output shaft to a circle is further growth.When car drivers Option 4 refueling growth stalls, Plectrum will be 3 / 4 from the 3-file synchronization stall gear directly with the input shaft gear joint initiative, and power transmission directly from the input shaft to the output shaft, the transmission ratio at 1:1, that the input shaft and output shaft speed the same. The driving force without intermediate shaft, also known as direct file, the file transmission than the maximum transmission efficiency. Most cars run-time files are used directly to achieve the best fuel economy.Shift into the first interval when, in a free transmission when Biansuchilun output shaft is not locked in, they cannot rotate the output shaft driven, not power output.General automotive manual transmission than the main 1-4 stalls, usually the first designers to determine the minimum (one stall) and maximum (4 files) transmission ratio, the middle stall drive by geometric progression than the general distribution. In addition, there are stalls Daodang and speeding, speeding file is also known as the five stalls.When the car to accelerate to more than car drivers with the choice of five stalls, and a typical five-transmission ratio is 0.87:1, which is driven by a pinion gear, thegear when the initiative to 0.87 zone, passive gear have been transferred to a circle of the End.Dao Dang, the opposite direction to the output shaft rotation. If one pair of meshing gears when we reverse rotation, with a middle gear, it will become the same to the rotation. Use of this principle, we should add a gear Daodang the "media" will be rotational direction reversed, it will have a Daodang axis. Daodang installed in the transmission shaft independent crust, and the intermediate shaft parallel axis gear with the intermediate shaft and output shaft gear meshing gears, will be contrary to the output shaft.Daodang usually used for the synchronization control also joins five stalls, stalls and Daodang 5 position in the same side. As a middle gear, the general transmission Daodang transmission ratio greater than 1 file transmission ratio, by twisting, steep slope with some vehicles encountered on the progress stalls falters with a Daodang boost.Ride from the driver of the considerations, better transmission stall, stall adjacent stall more than the transmission changes the ratio of small, and easy to shift smoothly. However, the short comings of the stalls is more transmission structure is complicated, bulky, light vehicle transmission is generally 4-5 stalls. At the same time, transmission ratio is not integral, but with all of the decimal point, it is because of the gear teeth meshing is not caused by the whole multiples of two gear teeth can lead to the whole multiples of two meshing gears of uneven wear, making the tooth surface quality have a greater difference.Manual transmission and synchronizerManual transmission is the most common transmission, or MT. Its basic structure sum up in one sentence, is a two-axle shaft, where input shaft, the shaft axis and intermediate shaft, which constitute the main body of the transmission and, of course, a Daodang axis. Manual transmission known as manual gear transmission, which can be in the axial sliding gears, the gears meshing different variable speed reached twisting purpose. Typical manual transmission structure and principles are as follows.Input shaft also said that the first axis, and its front-end spline driven directlywith the clutch disc sets with the spline , by the transfer of torque from the engine. The first axis of the intermediate shaft and gears meshing gears often, as long as the shaft axis to a turn, the intermediate shaft and gear also will be rotating. Vice also said intermediate shaft axis, the axis-even more than the size gear. Also known as the second output shaft axis, the axis of various sets of gear stall progress can be manipulated at any time in the role of the device and the corresponding intermediate shaft gear meshing, thus changing its speed and torque. With the end of the output shaft spline associated with the drive shaft through the drive shaft torque transmitted to the drive axle reducer.Thus, progress stalls drive transmission path is: input shaft gear often rodents - often rodents intermediate shaft gear - corresponding intermediate shaft gear - the second axis corresponding gear. Reversing the gear shaft can be manipulated by the device pick in the axis movement, and the intermediate shaft and output shaft gear meshing gears, to the contrary to the direction of rotation output.Most cars have five stalls and a Daodang forward, a certain degree of each stall transmission ratio, the majority of stalls transmission ratio greater than 1, 4 file transmission ratio of 1, known as direct stalls, and transmission ratio is less than 1 No.5 stall called accelerated stall. Free at the output shaft gear in a position of non-engagement, unacceptable power transmission.The transmission input shaft and output shaft rotational speed to their own, transform a stall when there is a "synchronous". Two different rotational speed gear meshing force will impact the collision occurred, damage gear. Therefore, the old transmission shift to a "feet-off" approach, or stall on the location of the free stay for a while by stalls in the free position refueling doors, in order to reduce the speed differential gear. However, this operation is relatively more complicated and difficult to grasp accurate. So designers create a "synchronized," and allows synchronization through the meshing of gears to be consistent speed and smooth meshing.At present Synchronous Transmission is based on the synchronization of inertia, mainly from joint sets, synchronous lock ring, and so on, it is characterized by friction on the role of synchronization. Splice sets Genlock engagement ring gear and the ringgear when it had Chamfer (Lock angle), Genlock within the cone ring gear engagement with the question of cone ring gear contact friction. Lock and cone angle has been made in the design of an appropriate choice to be made friction cone of the teeth meshing with the ring gear quickly sets pace at the same time will have a Lock role and to prevent the gears meshing in sync before. When synchronization lock cone ring gear engagement with the question of cone ring gear after contact in the effects of friction torque gear speed quickly lower (or higher) with the same speed synchronous lock ring, the two synchronous rotation of the gear Genlock Central zero speed, thus moment of inertia also disappear, then in force under the impetus of engagement sets unhindered and synchronization lock ring gear engagement, and further engagement with the question of gear engagement and the completion Gear Shift Process.The automatic gearboxThe automatic gearbox chooses to block the pole the equal to moving the stick shift of the gearbox, having generally below several blocks:P( parking), R( pour to block), N( get empty to block), D( go forward), S( or2, namely for 2 block soon), L.( or1, namely for 1 block soon)This several an usage for blocking a right usages coming driver the automatic gearbox is automotive of person to say particularly important, underneath let us very much familiar with once automatic gearbox eachly blockings main theme.The usage of the P ( the parking blocks)The launches the luck turns as long as choose to block the pole in driving the position, automatic gearbox car run about very easily.But park, choose to block the pole must pull into of P, from but pass the internal parking system in gearbox moves the device will output the stalk lock lives, combining to tense the hand system move, preventing the car ambulation.The usage of the R( pour to block)R a control for is pouring blocking, using inside wanting slicing recording, automatic gearbox car unlike moving gearbox car so can using half moving, so while reversing the car wanting special attention accelerating pedal.The usage of the N( get empty to block)The N is equal to get empty to block, can while starting or hour of trailer usage.At wait for the signal or block up the car will often often choose to block the pole keeps in the of D, trampling at the same time the next system move.If time is very short, do like this is an admission of, but if stop the time long time had better change into of N, combine to tense the hand system moves.Because choose to block the pole in driving the position, the automatic gearbox car has generally and all to drive the trend faintly, long hours trample the system move same as a deterrent this kind of trend, make gearbox oil gone up, the oil liquid changes in character easily.Particularly in the air condition machine work, launch the soon higher circumstance in machine bottom more disadvantageous.Some pilots for the sake of stanza oil, at made good time or go down slope will choose to block the pole pull the of N skids, this burn the bad gearbox very easily, launching the machine to revolves soon in the however because the gearbox outputs at this time the stalk turns soon very high,, the oil pump provides the oil shortage, lubricating the condition worsen, burn the bad gearbox easily.The usage of the D( go forward to block)Will choose to block when is normal to drive the pole put in the of D, car can at 1 ～4 block( or 3 block) its change to block automatically.The of D drives the position most in common usely. What demand control is: Because the automatic gearbox is soon high and low with car to come to make sure to block according to the accelerator size a, so accelerate the pedal operation method is different, changing to block the hour of the car is soon too not same alike.If start hour quick accelerate the pedal tramples the bottom, rising to block the night, accelerating the ability is strong, arriving certain car soon behind, then will accelerate the pedal loosen to open very quickly, car can rise to block immediately, launch like this the machine voice is small, comfortable good.The another characteristics of the D is a compulsory low blocking, easy to high speed the hour overtakes a car, will accelerate quickly in of D drove the pedal trample after all, connect the compulsory low fend off the pass and then can reduce to block automatically, the car accelerates very quickly, after overtaking a car loosen to openthe pedal of acceleration to can rise to block automatically again.The usage of the S, of L low the usage that blockThe automatic gearbox in in is placed in the low blocking the scope on of S or of Ls, can usage under an etc. circumstance.It change to can make use of to launch well into of S or of Ls the mechanism move, avoiding the car wheel system move the machine over hot, cause the system move the effect descent while going down slope.But change into from the of D of S or of L, car soon can't higher than rise to block the car homologously soon, otherwise strong vibration in opportunity to launch, make gearbox oil hoicked, even will damage the gearbox.The is another at rain fog weather hour, if the road adheres to the term bad, can change into a position for or of L, fixing at somely first lowly blocking driving, doing not use can automatically changing blocking, in order to prevent the car beats slippery.Must keep firmly in mind at the same time, beat the slippery hour can will choose to block the pole pushes into a motive for, cutting off launching machine, toing guarantee a car the safety.汽车变速器设计----------英文文献翻译我们知道，汽车发动机在一定的转速下能够达到最好的状态，此时发出的功率比较大，燃油经济性也比较好。

英文翻译外文文献翻译33变速器概述

附录附录A 英文文献原文Transmission OverviewTransmission gearbox's function the engine's output rotational speed is high, the maximum work rate and the maximum torque appears in certain rotational speed area. In order to display engine's optimum performance, must have a set of variable speed gear, is coordinated the engine the rotational speed and wheel's actual moving velocity. The transmission gearbox may in the automobile travel process, has the different gear ratio between the engine and the wheel, through shifts gears may cause the engine work under its best power performance condition. Transmission gearbox's trend of development is more and more complex, the automaticity is also getting higher and higher, the automatic transmission will be future mainstream.Automotive Transmission's mission is to transfer power, and in the process of dynamic change in the transmission gear ratio in order to adjust or change the characteristics of the engine, at the same time through the transmission to adapt to different driving requirements. This shows that the transmission lines in the automotive transmission plays a crucial role. With the rapid development of science and technology,people's car is getting higher and higher performance requirements, vehicle performance, life, energy consumption, such as vibration and noise transmission depends largely on the performance, it is necessary to attach importance to the study of transmission.Transmission gearbox's pattern the automobile automatic transmission common to have three patterns: Respectively is hydraulic automatic transmission gearbox (AT), machinery stepless automatic transmission (CVT), electrically controlled machinery automatic transmission (AMT). At present what applies is most widespread is, AT becomes automatic transmission's pronoun nearly.AT is by the fluid strength torque converter, the planet gear and the hydraulic control system is composed, combines the way through the fluid strength transmission and the gear to realize the speed change bending moment. And the fluid strength torque converter is the most important part, it by components and so on pump pulley, turbine wheel and guide pulley is composed, has at the same time the transmission torque and the meeting and parting function.And AT compare, CVT has omitted complex and the unwieldy gear combination variable transmission, but is two groups of band pulleys carries on the variable transmission. Through changes the driving gear and the driven wheel transmission belt's contact radius carries on thespeed change. Because has cancelled the gear drive, therefore its velocity ratio may change at will, the speed change is smoother, has not shifted gears kicks the feeling.AMT and the hydraulic automatic transmission gearbox (AT) is the having steps automatic transmission equally. It in the ordinary manual transmission gearbox's foundation, through installs the electrically operated installment which the microcomputer controls, the substitution originally coupling's separation which, the joint and the transmission gearbox completes by the manual control elects to keep off, to shift gears the movement, realizes fluid drive.Manual transmission gear mainly uses the principle of deceleration. Transmission within the group have different transmission ratio gear pair, and the car at the time of shift work, that is, through the manipulation of institutions so that the different transmission gear pair work. Manual transmission, also known as manual gear transmission, with axial sliding in the gears, the meshing gears through different speed to achieve the purpose of torque variation. Manual shift transmission can operate in full compliance with the will of the driver, and the simple structure, the failure rate is relatively low, value for money.Automatic transmission is based on speed and load (throttle pedal travel) for two-parameter control gear in accordance with the above twoparameters to automatically take-off and landing. Automatic transmission and manual transmission in common, that is, there are two-stage transmission, automatic transmission can only speed the pace to automatically shift, manual transmission can be eliminated, "setback" of the shift feel.Automatic transmission is a torque converter, planetary gears and hydraulic manipulation of bodies, through the hydraulic transmission and gear combination to achieve the purpose of variable-speed torque variation.Also known as CVT-type continuously variable CVT. This transmission and automatic transmission gear generally the biggest difference is that it eliminates the need of complex and cumbersome combination of variable-speed gear transmission, and only two groups to carry out variable-speed drive pulley.CVT transmission than the traditional structure of simple, smaller and it is not the number of manual gear transmission, no automatic transmission planetary gear complex group, mainly rely on the driving wheel, the driven wheel and the transmission ratio brought about by the realization of non-class change.Widely used in automotive internal combustion engine as a power source, the torque and speed range is very small, and complexconditions require the use of motor vehicles and the speed of the driving force in the considerable changes in the scope. To resolve this contradiction, in the transmission system to set up the transmission to change transmission ratio, the expansion of the driving wheel torque and speed range in order to adapt to constantly changing traffic conditions, such as start, acceleration, climbing and so on, while the engine in the most favorable conditions to work under the scope; in the same direction of rotation of the engine under the premise of the automobile can be driven back; the use of neutral, interruption of power transmission, in order to be able to start the engine, idle speed, and ease of transmission or power shift . Transmission is designed to meet the above requirements, so that the conditions in a particular vehicle stability.In addition to transmission can be used to meet certain requirements, but also to ensure that it and the car can have a good match, and can improve the car's power and economy to ensure that the engine in a favorable condition to increase the scope of the work of the use of motor vehicles life, reduce energy consumption, reduce noise, such as the use of motor vehicles.Today the world's major car companies CVT are very active in the study. The near future, with electronic control technology to furtherimprove, electronically controlled Continuously Variable Transmission-type is expected to be a wide range of development and application.附录B 文献翻译变速器概述发动机的输出转速非常高，最大功率及最大扭矩在一定的转速区出现。

汽车手动变速箱外文及其部分翻译

MANUAL GEARBOXES9.1 MANUAL GEARBOX CLASSIFICATIONGearboxes are normally classiﬁed according to the number of toothed wheelcouples (stages) involved in the transmission of motion at a given speed; in thecase of manual vehicle transmissions, the number to be taken into account isthat of the forward speeds only, without consideration of the ﬁnal gear, even if included in the gearbox.Therefore there are:•Single stage gearboxes•Dual stage or countershaft gearboxes•Multi stage gearboxesFigure 9.1 sho ws the three conﬁgurations for a four speed gearbox.It is useful to comment on the generally adopted rules of these schemes.Each wheel is represented by a segment whose length is proportional to the pitch diameter of the gear; the segment is ended by horizontal strokes, representingthe tooth width. If the segment is interrupted where crossing the shaft, thegear wheel is idle; the opposite occurs if the segment crosses the line of theshaft without interruption. Then the wheel rotates with the shaft. Hubs are represented according to the same rules, while sleeves are represented with apair of horizontal strokes. Arrows show the input and output shafts.Single stage gearboxes are primarily applied to front wheel driven vehicles,because in these it is useful that the input and the output shaft are oﬀset; inG. Genta and L. Morello, The Automotive Chassis, Volume 1: Components Design, 425 Mechanical Engineering Series,c Springer Science+Business Media B.V. 2009426 9. MANUAL GEARBOXES FIGURE 9.1. Schemes for a four speed gearbox shown in three diﬀerent conﬁgurations: a: single stage, b: double stage and c: triple stage.conventional vehicles, on the other hand, it is better that input and output shaftsare aligned.This is why rear wheel driven vehicles usually adopt a double stage gearbox.The multi-stage conﬁguration is sometime adopted on front wheel drivenvehicles with transversal engine, because the transversal length of the gearboxcan be shortened; it is used when the number of speeds or the width of the gearsdo not allow a single stage transmission to be used.It should be noted that on a front wheel driven vehicle with transversalengine, having decided on the value of the front track and the size of the tire,the length of the gearbox has a direct impact on the maximum steering angle ofthe wheel and therefore on the minimum turning radius.The positive result on the transversal dimension of multi-stage gearboxes isoﬀset by higher mechanical losses, due to the increased number of engaged gear wheels.It should be noted that in triple stage gearboxes, shown in the picture, theaxes of the three shafts do not lie in the same plane, as the scheme seems toshow. In a lateral view, the outline of the three shafts should be represented asthe vertices of a triangle; this lay-out reduces the transversal dimension of the gearbox. In this case and others, as we will show later, the drawing is representedby turning the plane of the input shaft and of the counter shaft on the plane ofthe counter shaft and of the output shaft.Gear trains used in reverse speed are classiﬁed separately. The inversion ofspeed is achieved by using an additional gear. As a matter of fact, in a train ofthree gears, the output speed has the same direction as the input speed, whilethe other trains of two gears only have an output speed in the opposite direction;the added gear is usually called idler.The main conﬁgurations are reported in Fig. 9.2.In scheme a, an added countershaft shows a sliding idler, which can matchtwo close gears that are not in contact, as, for example, the input gear of theﬁrst speed and the output gear of the second speed. It should be noted that, inthis scheme, the drawing does not preserve the actual dimension of the parts.9.1 Manual gearbox classiﬁcation 427FIGURE 9.2. Schemes used for reverse speed; such schemes ﬁt every type of gearboxlay-out.Scheme b shows instead two sliding idlers, rotating together; this arrange-ment oﬀers additional freedom in obtaining a given transmission ratio. The coun-tershaft is oﬀset from the drawing plane; arrows show the gear wheels that matchwhen the reverse speed is engaged.Scheme c is similar to a in relation to the idler; it pairs an added speciﬁcwheel on the output shaft with a gear wheel cut on the shifting sleeve of the ﬁrs tand second speed, when it is in idle position.Conﬁguration d shows a dedicated pair of gears, with a ﬁxed idler and ashifting sleeve.The following are the advantages and disadvantages of the conﬁgurationsshown in the ﬁgure.•Schemes a, b and c are simpler, but preclude the application of synchro-nizers (because couples are not always engaged), nor do they allow the useof helical gears (because wheels must be shifted by sliding).•Scheme d is more complex but can include a synchronizer and can adopthelical gears.•Schemes a, b and c do not increase gearbox length.428 9. MANUAL GEARBOXES9.2 MECHANICAL EFFICIENCYThe mechanical eﬃciency of an automotive gear wheel transmission is high com-pared to other mechanisms performing the same function; indeed, the value ofthis eﬃciency should not be neglected when calculating dynamic performanceand fuel consumption. The continuous eﬀort of to limit fuel consumption justi-ﬁes the care of transmission designers in reducing mechanical losses.Total transmission losses are conveyed up by terms that are both dependentand independent of the processed power; the primary terms are:•Gearing losses; these are generated by friction between engaging teeth(power dependent) and by the friction of wheels rotating in air and oil(power independent).•Bearing losses; these are generated by the extension of the contact area ofrolling bodies and by their deformation (partly dependent on and partlyindependent of power) and by their rotation in the air and oil (powerindependent).•Sealing losses; they are generated by friction between seals and rotatingshafts and are power independent.•Lubrication losses; these are generated by the lubrication pump, if present,and are power independent.All these losses depend on the rotational speed of parts in contact and,therefore, on engine speed and selected transmission ratio.Table 9.1 reports the values of mechanical eﬃciency to be adopted in calcu-lations considering wide open throttle conditions; these values consider a pair ofgearing wheels or a complete transmission with splash lubrication; in the sametable we can see also the eﬃciency of a complete powershift epicycloidal auto-matic transmission and a steel belt continuously variable transmission. For thetwo last transmissions, the torque converter must be considered as locked-up.TABLE 9.1. Mechanical eﬃciency of diﬀerent transmission mechanisms.Mechanism type Eﬃciency (%)Complete manual gearboxwith splash lubrication 92–97Complete automatic transmission(ep. gears) 90–95Complete automatic gearbox(steel belt; without press. contr.) 70–80Complete automatic gearbox(steel belt; with press. contr.) 80–86Pair of cyl. gears 99.0–99.5Pair of bevel gears 90–939.2 Mechanical eﬃciency 429FIGURE 9.3. Contributions to total friction loss of a single stage gearbox designed for300 Nm as function of input speed.It is more correct to reference power loss measurement as a function ofrotational input speed rather than eﬃciency. Figure 9.3 shows the example ofa double stage transmission, in fourth speed, at maximum power; the diﬀerentcontributions to the total are shown.This kind of measurement is made by disassembling the gearbox step bystep, thus eliminating the related loss.In the ﬁrst step all synchronizer rings are removed, leaving the synchronizerhubs only; mechanical losses of non-engaged synchronizers are, therefore, mea-surable. The loss is due to the relative speed of non-engaged lubricated conicalsurfaces; the value of this loss depends, obviously, on speed and the selectedtransmission ratio.In the second step all rotating seals are removed.In the third step the lubrication oil is removed, and therefore, the bulk ofthe lubrication losses is eliminated; some oil must remain in order to leave thecontact between teeth unaﬀected.By removing those gear wheels not involved in power transmission, theirmechanical losses are now measurable.The rest of the loss is due to bearings; the previous removal of parts canaﬀect this value.A more exhaustive approach consists in measuring the complete eﬃciencymap; the eﬃciency can be represented as the third coordinate of a surface, wherethe other two coordinates are input speed and engine torque. Eﬃciency calcu-lations can be made by comparing input and output torque of a working trans-mission.Such map can show how eﬃciency reaches an almost constant value at amodest value of the input torque; it must not be forgotten that standard fuelconsumption evaluation cycles involve quite modest values of torque and there-fore imply values of transmission eﬃciency that are changing with torque.Figure 9.4 shows a qualitative cross section of the aforesaid map, cut atconstant engine speed. It should be noted that eﬃciency is also zero at input430 9. MANUAL GEARBOXESFIGURE 9.4. Mechanical eﬃciency map, as a function of input torque at constantengine speed; the dotted line represents a reasonable approximation of this curve, to beused on mathematical models for the prediction of performance and fuel consumption.torque values slightly greater than zero; as a matter of fact, friction implies acertain minimum value of input torque, below which motion is impossible.A good approximation to represent mechanical eﬃciency can be made usingthe dotted broken line as an interpolation of the real curve.9.3 MANUAL AUTOMOBILE GEARBOXES9.3.1 Adopted schemesIn manual gearboxes, changing speed and engaging and disengaging the clutchare performed by driver force only.This kind of gearbox is made with helical gears and each speed has a syn-chronizer; some gearboxes do not use show the synchronizer for reverse speed,particularly those in economy minicars.We previously discussed a ﬁrst classiﬁcation; additional information is thespeed number, usually between four and six.Single stage gearboxes are used in trans-axles; they are applied, with someexceptions, to front wheel driven cars with front engine and rear driven cars withrear engine; this is true with longitudinal and transversal engines.In all these situations the ﬁnal drive is included in the gearbox, which istherefore also called transmission.Countershaft double stage gearboxes are used in conventionally driven cars,where the engine is mounted longitudinally in the front and the driving axle isthe rear axle. If the gearbox is mounted on the rear axle, in order to improve theweight distribution, the ﬁnal drive could be included in the gearbox.9.3 Manual automobile gearboxes 431By multi-stage transmissions, some gear wheels could be used for diﬀerentspeeds. The number of gearing wheels could increase at some speeds; this nor-mally occurs at low speeds, because the less frequent use of these speeds reducesthe penalty of lower mechanical eﬃciency on fuel consumption.Cost and weight increases are justiﬁed by transmission length reduction,sometimes necessary on transversal engines with large displacement and morethan four cylinders.In all these gearboxes synchronizers are coupled to adjacent speeds (e.g.:ﬁrst with second, third with fourth, etc.) in order to reduce overall length andto shift the two gears with the same selector rod.We deﬁne as the selection plane of a shift stick (almost parallel to the xzcoordin ate body reference system plane for shift lever on vehicle ﬂoor) the planeon which the lever knob must move in order to select two close speed pairs. Forinstance, for a manual gearbox following many existing schemes, ﬁrst, second,third, fourth and ﬁfth speed are organized on three diﬀerent selection planes; thereverse speed can have a dedicated plane or share its plane with the ﬁfth speed.Figure 9.5 shows a typical example of a ﬁve speed single stage gearbox. Theﬁrst speed wheels are close to a bearin g, in order to limit shaft deﬂection.In this gearbox the total number of tooth wheels pairs is the same as forthe double stage transmission shown in Fig. 9.6.While in the ﬁrst gearbox there are only two gearing wheels for each speed,in the second there are three gearing wheels for the ﬁrst four speeds and noneFIGURE 9.5. Scheme for a ﬁve speed single stage transmission, suitable for front wheeldrive with transversal engine.432 9. MANUAL GEARBOXESFIGURE 9.6. Scheme of an on-line double stage gearbox for a conventional lay-out.for the ﬁfth. This property is produced by the presence of the so called constantgear wheels (the ﬁrst gear pair at the left) that move the input wheels of theﬁrst four speeds; the ﬁfth speed is a direct drive because the two p arts of theupper shaft are joined together.The single stage gearbox in Fig. 9.5 shows the ﬁfth speed wheel pair posi-tioned beyond the bearing, witness to the upgrading of an existing four speedtransmission; in this case the ﬁfth speed has a dedicated selection plane.The double stage gearbox in Fig. 9.7 is organized in a completely diﬀerentway but also shows the ﬁrst speed pair of wheels close to the bearing. The directdrive is dedicated to the highest speed; the ﬁfth speed shows a dedicated selectio nplane.Six speed double stage gearboxes do not show conceptual changes in com-parison with the previous examples; synchronizers are organized to leave ﬁrstand second, third and fourth, ﬁfth and sixth speeds on the same selection plane.As already seen, the multistage conﬁguration shown in Fig. 9.7 allows areasonable reduction of the length of the gearbox. In this scheme, only ﬁrst andsecond speeds beneﬁt from the second countershaft; power enters the counter-shaft through a constant gear pair of whee ls and ﬂows to the output shaft at areduced speed. Third, fourth and ﬁfth speed have a single stage arrangement.Reverse speed is obtained with a conventional idling wheel.9.3.2 Practical examplesFour speed gearboxes represented the most widely distributed solution in Europeuntil the 1970s, with some economy cars having only three speeds.9.3 Manual automobile gearboxes 433FIGURE 9.7. Scheme of a triple stage ﬁve speed gearbox, suitable for front wheel drivencar with transversal engine.With the increase in installed power, the improvement in aerodynamic per-formance and increasing attention to fuel consumption, it became necessary toincrease the transmission ratio of the last speed, having the ﬁrst speed remain atthe same values; as a matter of fact car weight continued to increase and engineminimum speed did not change signiﬁcantly.To achieve satisfactory performance all manufacturers developed ﬁve speedgearboxes; this solution is now standard, but many examples of six speed gear-boxes are available on the market, not limited to sports cars.Figure 9.8 shows an example of a six speed double stage transmission withthe ﬁfth in direct drive; here the ﬁrst and second pair of wheels are close to thebearing.This rule is not generally accepted; on one hand having the most stressedpairs of wheels close to the bearing allows a shaft weight containment. On theother hand, having the most frequently used pairs of wheels close to the bearingreduces the noise due to shaft deﬂection.Synchronizers of fourth and third speed are mounted on the countershaft;this lay-out reduces the work of synchronization, improving shifting quality by anamount proportional to the dimension of the synchronizing rings. Synchronizersof ﬁrst and second gear on the output shaft are, because of their diameter, larger434 9. MANUAL GEARBOXESFIGURE 9.8. Double stage six speed gearbox (GETRAG).than those of the corresponding gear; the penalty of the synchronization work ispaid by the adoption of a double ring synchronizer.Synchronizers on the countershaft oﬀer a further advantage: In idle positionthe gears are stopped and produce no rattle; this subject will be studied later on.9.3 Manual automobile gearboxes 435Figure 9.9 introduces the example of a single stage gearbox for a frontlongitudinal engine. The input upper shaft must jump over the diﬀerential, whichis set between the engine and the wheels. The increased length of the shaftssuggested adopting a hollow section. Because of this length the box is dividedinto two sections; on the joint between the two sections of the box additionalbearings are provided to reduce the shaft deﬂection.The input shaft features a ball bearing close to the engine and three otherneedle bearings that manage solely the radial loads. The output shaft has twotapered roller bearings on the diﬀerential side and a roller bearing on the oppositeside. This choice is justiﬁed by the relevant axial thrust emerging from the bevelgears.The ﬁrst and second speed synchronizers are on the output shaft a nd featurea double ring.The reverse speed gears are placed immediately after the joint (the idlergear is not visible) and have a synchronized shift. Remaining synchronizers areset in the second section of the box on the input shaft. The output shaft endswith the bevel pinion, a part of the ﬁnal ratio.It should be noted that the gears of the ﬁrst, second and reverse speeds aredirectly cut on the input shaft, in order to reduce overall dimensions.Most contemporary cars use a front wheel drive with transversal engine; thenumber of gearboxes with integral helical ﬁnal ratio is, therefore, dominant.In these gearboxes geared pairs are mounted from the ﬁrst to the last speed,starting from the engine side. An example of this architecture is given in Fig. 9.10.Like many other transmissions created with only four speeds, it shows theﬁfth speed segregated outside of the aluminium box and enclosed by a thin steelsheet cover; this placement is to limit the transverse dimension of the powertrain, in the area where there is potential interference with the left wheel in thecompletely steered position.This solution is questionable as far as the total length is concerned but showssome advantage in the reduction of the span between the bearings. Each bearingis of the ball type; on the side opposite to the engine the external ring of thebearing can move axially, to compensate for thermal diﬀerential displacements.One of the toothed wheels of the reverse speed is cut on the ﬁrst and secondshifting sleeve.The casing is open on both sides; one of these is the rest of one of thebearings of the ﬁnal drive. A large cover closes the casing on t he engine side and,in the meantime, provides installation for the second bearing of the ﬁnal driveand the space for the clutch mechanism; it is also used to join the gearbox tothe engine.In this gearbox synchronizers are placed partly on the input shaft and partlyon the output shaft.Figure 9.11 shows a drawing of a more modern six speed gearbox, in whichit was possible to install all the gears in a conventional single stage arrangement,thanks to the moderate value of the rated torque.436 9. MANUAL GEARBOXESFIGURE 9.9. Single stage six speed gearbox for longitudinal front engine (Audi).9.4 Manual gearboxes for industrial vehicles 437FIGURE 9.10. Five speed transmission for a transversal front engine (FIAT).Gears are arranged from the ﬁrst to the sixth, starting from the engineside; as we have already said this arrangement is demanded by the objectiveof minimizing shaft deﬂection. Only the synchronizers of ﬁrst and second speedfound no place on the input shaft; they are of the double ring type, as for theﬁrst speed.The reverse speed is synchronized and beneﬁts of a countershaft not shownin this drawing.9.4 MANUAL GEARBOXES FOR INDUSTRIALVEHICLES9.4.1 Lay-out schemesThe gearboxes we are going to examine in this section are suitable for vehicles ofmore than about 4 t of total weight; lighter vehicles, usually called commercialvehicles, adopt gearboxes that are derived from automobile production, as notedin the previous section.438 9. MANUAL GEARBOXESFIGURE 9.11. Six speed transmission for a transversal front engine (FIAT).Gearboxes used in industrial vehicles also feature synchronizers; they can beshifted directly, as in a conventional manual transmission, or indirectly with theassistance of servomechanisms. Non-synchronized gearboxes are sometimes usedon long haul trucks, because of their robustness. Assisted shifting mechanismsare widespread because of the easy availability of power media. Automatic orsemi-automatic transmis sions are also used, the ﬁrst type especially in buses.For gearboxes with four up to six speeds, the double stage countershaftarchitecture represents a standard; the scheme is the same as seen before.The constant gear couple is used for all speeds but the highest. Also notableis that the lowest speed wheels are close to the bearings.As shown in the drawings of Fig. 9.12, the highest speed can be obtainedeither in direct drive (scheme b) or with a pair of gears (scheme a); in this lastcase the direct drive is used for the speed before the last: these architectures arecalled direct drive and overdrive.In the ﬁgure, only the last and the ﬁrst before the last speed are represented.The choice between the two alternatives can be justiﬁed by the diﬀerentvehicle mission; virtually the same gearbox can be used on diﬀerent vehicleswith diﬀerent frequently used speeds (a truck and a bus for example).9.4 Manual gearboxes for industrial vehicles 439FIGURE 9.12. Alternative constant gear schemes with last or ﬁrst before the last speedin direct drive.Sometime the constant gear is set on the output shaft, after the diﬀerentspeed gears; this conﬁguration oﬀers the following advantages:•Reduction of the work of synchronization, because of the smaller gear di-mension at the same torque and total transmission ratio•Less stress on the input shaft and countershaftOn the other hand, the following disadvantages emerge:•Bearings rotate faster.•Constant gear wheels are more highly stressed.This applies for single range transmissions.Multiple range transmissions feature, in addition to the main gearbox, othergearboxes that multiply the number of speeds of the main gearbox by the numberof their speeds. With this architecture the total number of gear pairs might bereduced, for a given number of speeds, and, sometime the use of the gearshiftlever can be simpler.This arrangement is used when more than six speeds are necessary. A multi-ple range transmission is therefore made out of a combination of diﬀerent coun-tershaft gearboxes, single range gearboxes or epicycloidal gearboxes.Each added element is called a range changer if it is conceived as beingcapable of using the main gearbox speeds in sequence, in two completely non-overlapping series of vehicle speeds; for example, if the main gearbox has fourspeeds, the ﬁrst speed in the high range is faster than the fourth speed in thelow range.The element is called a splitter if it is intended to create speeds that areintermediate to those of the main gearbox; in this case, for example the third440 9. MANUAL GEARBOXESFIGURE 9.13. Scheme of a 16 speed gearbox for industrial vehicles; it is made with afour gear main gearbox, a double speed splitter and a double speed range changer withdirect drive.speed in the high range is faster than the third speed in the low range, but slowerthan the fourth speed in the low range.We call the gearbox with the highest number of speeds the main gearbox;the splitter and the range changer will be set in series before and after the maingearbox.Figure 9.13 shows the scheme of a gearbox featuring a splitter and a rangechanger. The splitter is made out of a pair of wheels that work as two diﬀerentconstant gears for the main gearbox. The countershaft can therefore be movedat two diﬀerent speeds, according to the position of the splitter unit. Becausethe main gearbox has four speeds, this splitter unit can create a total of eightspeeds, one of them being in direct drive.At the output shaft of this assembly, there is a range changer unit madeas a two speed double stage gearbox with direct drive; this unit multiplies bytwo the total number of obtainable speeds. The range changer is qualiﬁed by the signiﬁcant diﬀerence between the two obtainable speeds.The range changer can be made with a countershaft gearbox or an epicy-cloidal gearbox with direct drive; the advantage in the latter case is the possi-bility of an easier automatic actuation, by braking some of the elements of the epicycloidal gear.9.4 Manual gearboxes for industrial vehicles 441FIGURE 9.14. Transmission ratios obtained with the scheme of transmission shown in Fig. 9.15; speed identiﬁcation shows the main gearbox speed with the number, the splitter position with the ﬁrst letter, the range changer position wi th the second; L stands for low, H stands for high.It is also possible to place the range changer before the main gearbox andthe splitter unit after the main gearbox.A diﬀerent way of deﬁning the functions of range change units is to say thatthe splitter is a gearbox that compresses the gear sequence, because it reducesthe gap between speeds, while the range changer is a gearbox that expands the gear sequence, because it increases the total range of the transmission.Figure 9.14 explains the concept of compression; the bars represent the ratios obtained in all shifting lever positions. Ratios obtained with the splitter unit inthe L position (the ﬁrst letter in the speed identiﬁcation, L stands for lower ratio) are interspersed with the ratios obtained with the splitter unit in the H position (H stands for higher ratio, in this case 1:1) and reduce the amplitude of the gear steps of the main gearbox.The same ﬁgure also explains the concept of expansion, showing on thesame graph the ratio obtained with the range changer in the H position (second identiﬁcation letter) and the L position; the gear step between the ﬁrst in lowgear and the ﬁrst in high gear is as big as the range of the main gearbox, andthe total transmission range is widened.The range changer is therefore seldom used, when driving conditions change suddenly, as, for example, when leaving a normal road for a country road that must be driven more slowly, or when encountering a strong slope with a fully loaded vehicle. The splitter allows the dynamic performance of the vehicle to be improved, making the optimum transmission ratio available to obtain the desired power. The splitter is therefore used frequently. In a fully loaded vehicle, for example, all split ratios can be used in sequence during full throttle acceleration from a standstill.442 9. MANUAL GEARBOXESThe range changer and splitter are usually made as modular units that canbe mounted at both ends of the main gearbox, or changed with simple covers,in order to satisfy all application needs with limited total production costs. Generalizing these concepts could suggest building transmissions using ad- ditional range changing units arranged in series. These could be conceived as being made only of splitter units with direct drive.In such a case, with n pairs of tooth wheels it is possible to obtain a totalof z transmission ratios, given by the formula:z =2n−1. (9.1)The formula expresses the number of possible states that can be obtainedfrom n − 1 pairs of gears; one unit is subtr acted because one pair must be a constant gear to move the countershaft.With four pairs of gears, for example, four speeds can be obtained in adouble stage gearbox; while using a cascade of splitters eight diﬀerent speeds could be obtained. The goal of good shift manoeuvrability and the implicationsfor mechanical losses must not be forgotten, while deﬁning the best architecture. Figure 9.15 shows the scheme of the 16 speed transmission with splitter andrange changer we already described. In this picture are represented the spans of。

汽车变速箱英语词汇

汽车变速器英语词汇（1）（副变速器）变速杆range selector 按钮控制finger-tip control 半自动换档机械式变速器semi-automatic mechanical transmission半自动液力变速器semiautomatic transmission包角scroll 泵轮impeller边斜角（进出口）bias(entrance and exit) 变矩比torque ratio变矩范围torque conversion range 变矩系数torque ratio变容式液力变矩器variable capacity converter变速叉shifting fork (gear shift fork) 变速齿轮transmission gear 变速齿轮比（变速比）transmission gear ratio变速齿轮组change gear set 变速杆stick shift(gear shift lever) 变速轨（拨叉道轨）shift rail 变速器transmission (gearbox)变速器输出轴transmission output shaft变速器输入轴transmission input shaft变速器中间轴transmission countershaft 变速器轴的刚度rigidity of shaft 变速器主动齿轮轴transmission drive gear shaft变速器主轴transmission main shaft 变速踏板gear shift pedal操纵杆control lever 槽导变速gate change长行星齿轮long planet gear 常啮齿轮constant mesh gear常啮合齿轮传动constant mesh transmission常压式同步器constant pressure synchronizer超速档变速器over drive transmission 超限换档overrun shift带主减速器的变速器final driving transmission 传动比gear ratio单向离合器one-way clutch 单向离合器换档freewheel shift 导轮可反转的变矩器torque converter with reversal reactor倒档reverse gear 倒档中间齿轮reverse idler gear 低速档bottom gear(low speed gear)第二档second gear 第一档first gear电磁阀调压阀solenoid regulator valve电液式自动换档系统electronic -hydraulic automatic电子同步变速装置electronically synchronized transmission assembly调压阀pressure -regulator valve 调制压力modulated pressure定输入扭矩特性constant input torque performance定轴式液力变速器countershaft transmission定子stator 动力换档power shift 动力换档过程timing动力相似dynamic similarity动力助力换档变速器power assisted shift transmission短行星齿轮short planet gear 多级变速器multi-speed transmission 多中间轴变速器multi-countershaft transmission反拖特性coast performance方向盘式变速column shift (handle change)分动齿轮（分动机构）transfer gear 分动箱（分动器）transfer case分动箱控制杆transfer gear shift fork分段式多档变速器sectional type multi-speed transmission分流式液力变速器split torque drive transmission辅助变速器auxiliary gear box 副变速器splitter副轴counter shaft 副轴齿轮counter shaft gear 高速档top gear(high gear)固定轴式变速器fixed shaft transmission惯性式同步器inertial type of synchronizer过载系数overloading ratio 后油泵gear pump (output pump ) 滑差slip 滑动齿轮sliding gear滑动齿轮变速器sliding gear transmission滑动齿轮传动sliding -gear transmission缓冲压力compensator or trimmer pressure 换档shift换档点shift point 换档定时property of automatic shift换档阀shift valve 换档规律process of power shift换档机构gearshift 换档循环shift schedule换档元件engaging element 换档指令发生器shift pattern generator 回油泵scavenge oil pump 机械式变速器mechanical transmission 级stage 几何相似geometry similarity继动阀relay valve汽车变速器英语词汇（2）寄生损失特性no load (parasitic losses)performance 降档downshift经济档economic gear 空档位置neutral position 力矩特性torque factor(coefficient of moment) 空转转速racing speed两轴式变速器twin-shaft transmission 零速起动stall start零速转速stall speed 流量阀flow valve内侧行星齿轮inner planet gear 内齿轮internal or king gear 内环core 能容系数capacity factor啮合套shift sleeve (engagement sleeve) 能容系数capacity factor偶合点coupling point 偶合范围coupling range前油泵front pump (input pump ) 爬行档creeper gear强制换档forced shift 驱动特性drive performance 取力器（动力输出机构）power take-off全齿套变速器all dog clutch transmission全特性total external characteristic全斜齿常啮式变速器fully constant mesh all helical gear transmission全液压自动换档系统hydraulic automatic control system全油门特性full throttle performance全直齿常啮式变速器fully constant mesh all spur gear transmission人工换档液力变速器manually shifted transmission设计流线design path 人工换档manual shift手动换档变速器manually shifted transmission 输出特性characteristic of exit 双泵轮液力变矩器double-impeller torque converter输入特性characteristic of enhance 双联行星齿轮compound planet gear 双涡轮液力变矩器double-turbine torque converter双中间轴变速器twin countershaft transmission速度环量circulation (circulation of stream)速度三角形triangle of velocities 速控阀governor valve速控压力governor pressure 锁止离合器lock-up clutch锁止式液力变矩器lock-up torque converter 太阳齿轮sun gear同步器式变速器synchromesh transmission 同步器synchronizer透穿性transparency 外侧行星齿轮outer planet gear 外环shell 涡轮turbine无级变速器non-stage transmission 吸收特性absorption characteristic先导阀priority valve 限档压力hold pressure相phase 响应特性response characteristic 信号阀signal valve 行星齿轮planet gear行星齿轮式变速器planetary transmission 行星齿轮机构planetary gears行星式液力变速器planetary transmission 行星架planet carrier选档阀selector valve 叶轮member叶片blade 叶片角blade angle叶片转位blade angle shift 液力变矩器torque converter液力变矩器旁通阀converter bypass valve 液力变矩器锁止converter lockup 液力变速器hydrodynamic transmission 液力传动hydrodynamic drive液力传动装置hydrodynamic drive unit液力传动装置充油压力hydrodynamic unit change pressure液力偶合器fluid coupling 液力起步fluid start液流角flow angle 抑制换档inhibited shift原始特性primary characteristic远距离操纵变速器remote control transmission真空调制压力vacuum modulator pressure直接变速direct change(direct control)直接操纵变速器direct control transmission直接档变速器direct drive transmission 直接驱动direct drive锁止式液力变矩器lock-up torque converter 锁止离合器lock-up clutch太阳齿轮sun gear 同步器synchronizer同步器式变速器synchromesh transmission 透穿性transparency外侧行星齿轮outer planet gear 外环shell无级变速器non-stage transmission 涡轮turbine吸收特性absorption characteristic 先导阀priority valve限档压力hold pressure 相phase响应特性response characteristic 信号阀signal valve行星齿轮planet gear 行星齿轮机构planetary gears 行星齿轮式变速器planetary transmission 行星架planet carrier行星式液力变速器planetary transmission 选档阀selector valve叶轮member 叶片blade叶片角blade angle 叶片转位blade angle shift液力变矩器torque converter 液力变矩器旁通阀converter bypass valve液力变矩器锁止converter lockup 液力变速器hydrodynamic transmission液力传动hydrodynamic drive 液力传动装置hydrodynamic drive unit液力传动装置充油压力hydrodynamic unit change pressure液力偶合器fluid coupling 液力起步fluid start液流角flow angle 抑制换档inhibited shift远距离操纵变速器remote control transmission 原始特性primary characteristic 真空调制压力vacuum modulator pressure直接变速direct change(direct control) 直接操纵变速器direct control transmission直接档变速器direct drive transmission 直接驱动direct drive中间齿轮intermediate gear(counter gear)中间轴变速器countershaft transmission 重迭阀overlap valve 主变速器basic transmission主压力line pressure 转动叶片variable blade转子rotor 自动换档automatic shift自动换档机械式变速器automatic mechanical transmission自动液力变速器automatic transmission自动增力式同步器self-servo synchronizer综合式液力变矩器torque converter-coupling组合式变速器combinatory transmission。

汽车变速器的设计外文文献翻译、中英文翻译、外文翻译

汽车变速器的设计外文文献翻译、中英文翻译、外文翻译A manual n。

also known as a standard n。

XXX。

It consistsof gears。

synchros。

roller bearings。

shafts。

and gear selectors。

The main clutch assembly is used to engage and disengage the engine from XXX gears are used to select the desired。

and the sector fork moves gears from one to another using the gearshift knob。

Synchros are used to slow the gear to a。

before it is XXX。

The counter shaft holds the gears in place and against the main input and output shaft。

Unlike automatic ns。

XXX。

as there isno XXX。

Note: XXX "n Shifter" was deleted as it had no XXX.)XXX have four to six forward gears and one reverse gear。

However。

some cars may have up to eight forward gears。

while semi trucks XXX by the number of forward gears。

such as a 5-speed standard n.The n of a standard n includes three shafts: the input shaft。

汽车变速器的设计外文文献翻译、中英文翻译、外文翻译

本科毕业设计（论文）英文资料翻译*****指导教师：孙飞豹（副教授）学科、专业：车辆工程沈阳理工大学应用技术学院2011年12月20日transmission used in automobilesA standard transmission or manual transmission is the traditional type of transmission used in automobiles. The manual or standard transmission consists of a series of gears, synchros, roller bearings, shafts and gear selectors. The main clutch assembly is used to engage and disengage the engine from the transmission. Heliacal cut gears are used to select the ratio desired the sector fork move gears from one to another by using the gearshift knob. Synchros are used to slow the gear to a stop before it is engaged to avoid gear grinding, the counter shaft hold the gears in place and against the main input and output shaft. A stick shift transmission has no torque converter so there is no need for a transmission cooler. A stick shift transmission needs a simple fluid change for proper service. (there is no transmission filter in a stick shift transmission).Transmission ShifterMost manual transmissions have one reverse gear and four to six forward gears. Some cars also have eight forward gears while thirteen to twenty-four gears are present in semi trucks. To differentiate among the available standard transmissions, they are addressed by the number of forward gears. For example, if the standard transmission has five gears, it will be referred to as 5-speed standard transmission or 5-speed standard.Typical Standard Transmission ConfigurationInside the transmission shafts contain all forward and reverse gears. Most transmissions contain three shafts: input shaft, output shaft and counter or lay shaft. Other than standard transmission, there are other transmissions like continuously variable transmission, automatic transmission and semi-automatic transmission. In the manual transmission, a pair of gears inside the transmission selects the gear ratios. Whereas, in an automatic transmission, combination of brake bands and clutch packs control the planetary gear which selects the gear ratio.If there is a provision to select a gear ratio manually in automatic transmissions, the system is called a semi-automatic transmission. The driver can select from any of the gears at any pointof time. In some automobiles like racing cars and motorcycles that have standard transmissions, the driver can select the preceding or the following gear ratio with no clutch operation needed. This type of standard transmission is known as sequential transmission. In this transmission the clutch is still used for initial take off.Clutch and Flywheel AssemblyThe main clutch plays the role of a coupling device which separates the transmission and the engine. If the clutch is absent and the car comes to a stop the engine will stall. In automobiles, the clutch can be operated with the help of a pedal located on the floor of the vehicle. In an automatic transmission instead of a clutch, a torque converter is used to separate the transmission and engine.Typical Stick Shift PatternsA desired gear can be selected by a lever which is usually located on the floor in between the driver and passenger seat. This selector lever is called the gear lever or gear selector or gear shift or shifter. This gear stick can be made to move in right, left, forward and backward direction. When the gear is placed on the N position or neutral position, no gear will be selected. To move the car in the backward direction, the R gear or reverse gear should be selected.Standard transmissions are more efficient and less expensive to produce than automatic transmissions. A Standard transmission is about 15% more efficient compared to an automatic transmission. Standard transmissions are generally stronger than automatic transmissions and off road vehicles take advantage of a direct gear selection so they can withstand rough conditions. Less active cooling is also required in manual transmission system because less power is wasted.●Popular Problem ChecksCar will not go into gearClutch disc is broken completelyInternal transmission damageFailed clutch master cylinderSeized clutch slave cylinderBroken clutch fork pivotBroken clutch cableCar goes into gear but it fades out or is slippingClutch is worn out and needs replacementClutch is oil soaked from a external engine oil leakCar makes grinding noise while operating or shifting gearsOne of the roller or thrust bearings has failedThe gear synchro is worn out not forcing the gear stop before it is engaged causing a grinding gear.A counter or main shaft bearing has failed causing misalignment of the gears●Troubleshooting Noise and ProblemsIf the vehicle is running and a whirring sound is heard, then it goes away when the clutch is depressed, the transmission input bearing has failed.If the transmission is quiet in neutral but when you depress the clutch a squeaking noise is observed, a clutch throw out bearing has failed.Tips:Never let little noises go unattended; a small noise can cause a large noise and transmission operation failure. Never overload a vehicle or tow beyond the capacity this can cause premature transmission failure.汽车变速器汽车传统变速器是那种标准的手动变速器。

汽车变速器变速箱外文文献翻译、中英文翻译、外文翻译

TRANSMISSIONOf all transmission technologies, the manual gearbox is the most efficient; around 96 per cent of the energy that is put in comes out of the other end. But not everyone can drive one or wants to. Because you have to dip the clutch pedal, it is less comfortable to drive in heavy traffic. It makes the driver tired and the torque interruptions’ head-nod effect on passengers can be wearing.The driver's clutch control and corresponding torque interruptions are also the manuals weak point. When accelerating up through the gearbox, each up-shift requires the driver to cut the torque momentarily by lifting the gas pedal and dipping the clutch. It may just take a second to complete the operation, but during this time the vehicle is losing speed and acceleration.At the opposite end of the spectrum is the traditional automatic. The modern transmission is by far, the most complicated mechanical component in today’s automobile. It is a type of transmission that shifts itself .A fluid coupling or torque converter is used instead of a manually operated clutch to connect the transmission to the engine.There are two basic types of automatic transmissions based on whetherthe vehicle is rear wheel drive . On a rear wheel drive car , the transmission is usually mounted to the back of the engine and is located under the hump in the center of the floorboard alongside the gas pedal position . A drive shaft connects the rear of the transmission to the final drive which is located in the rear axle and is used to send power to the rear wheel. Power flow on this system is simple and straight forward going from the engine, through the torque converter , then through the transmission and driver shaft until it reaches the final driver where it is split and sent to the two rear wheel .On a front wheel drive car, the transmission is usually combined .With the final drive to from what is called a transaxle. The engine on a front wheel driver car is usually mounted sideways in the car with the transaxle tucked under it onthe side of the engine facing the rear of the car. Front axles are connected directly to the transaxle and provide power to the front wheels. In this example, power flows from the engine through the torque converter to a large chain that sends the power through a 180 degree turn to the transmission that is along side the engine. From there，The power is routed through the transmission to the final drive where it is split and sent to the two front wheels through the drive axles.There are a number of other arrangements including front drive vehicles where the engine is mounted front to back instead of sideways and there are other systems that drive all four wheels but the two systems described here are by far the most popular. A must less popular rear drive arrangement has the transmission mounted to the final drive at the rear and is connected by a drive shaft to the torque converter which is still mounted on the engine. This system is found on the new corvette and is used in order to balance the weight evenly between the front and rear wheels for improved performance and handling. Another rear drive system mounts everything, the engine, transmission and final drive in the rear. This rear engine arrangement is popular on the Porsche.The modern automatic transmission consists of many components and systems that are designed to work together in a symphony of planetary gear sets, the hydraulic system, seals and gaskets, the torque converter, the governor and the modulator or throttle cable and computer consider being an art form.On the automobile planet gear mainly uses in two places, one is the driving axle reduction gear, two is the automatic transmission. Very many net friends all want to know that, the planet gear has any function, why automobile must have it . We knew very well the gear major part all rotates the spool thread fixed gear. For example mechanical type clock and watch, above all gears although all in make the rotation, but their rotation center (with center of a circle position superposition) often installs through the bearing on the cabinet, therefore, their rotating axis all is the relative cabinet fixed, thus also is called "dead axle gear" . Has must have surely moves, the corresponding place, some kind of not that manner knows very well is called "planet gear" the gear, their rotation spool thread is not fixed, but is installs the support which may rotate in (blue color) on(in chart black part is shell, yellow expression bearing). The planet gear (green) besides can look like the dead axle gear such to revolve own rotating axis (B-B) to rotate, their rotating axis also (is called planet) along with the blue color support to circle other gears the spool thread (A-A) to rotate. Circles oneself spool thread the rotation to be called "rotation", circles other gear spool threads the rotation to be called "revolution", looks like in solar system planet such, therefore acquires fame.The spool thread fixed gear drive principle is very simple, meshes mutually in a pair in the gear, some gear takes the driving pulley, the power spreads from its there, another gear takes the driven wheel, the power outputs from it toward outside. Also some gears only take the stopover station, at the same time meshes with the driving pulley, one side meshes in addition with the driven wheel, the power passes from its there.In contains the planet gear in the gear system, the situation was different. Because has the planet frame, in other words, may have three rotating axes permissions power input/Output, but also may use the coupling or the brake and so on method. in needs time limits axis the rotation, is left over two axes to carry on the transmission, as the matter stands, meshes mutually between the gear relations may have the many kinds of combinations: The power from sun gear input, outputs from other sun gear, the planet put through brake mechanism has checked dies; Power from sun gear input, from planet output, moreover a sun gear ecks dies; The power from a planet input, outputs from sun gear, moreover a sun gear checks dies; Two powers separately from two sun gears inputs, after synthesis from planet output; Two powers separately from the planet and sun gear input, after the synthesis output from other sun gear; The power from sun gear input, divides two groups outputs from other sun gear and the planet frame; The power from a planet input, divides two groups to output from two sun gears;Its shift quality is good thanks to its torque converter, but efficiency is relatively poor despite recent advances. Because of this, a lot of the current research is trying to find an efficient alternative to the conventional automatic.The main technologies are continuously variable transmissions (CVTs); dualclutch transmissions (DCTs) and automated manual transmission (AMTs).They all offer different benefits over the conventional planetary automatic.The CVT uses a belt chain or torodial shaped dish drive to vary an infinite number of gear ratios. It has improved efficiency and cost when compared to conventional automatics. Its advantage comes from its simplicity. It consists of very few components；usually a rubber or metal-link belt；a hydraulically operated driving pulley, a mechanical torque-sensing driving pulley, microprocessors and some sensors.The transmission works by varying the distance between the face of the two main pulleys. The pulleys have V－shaped grooves in which the connecting the belt rides. One side of the pulley is fixed axially; the other side moves, actuated by hydraulics.When actuated, the cylinder can increase or reduce the amount of space between the two sides of the pulley. This allows the belt to ride lower or higher along the walls of the pulley, depending on driving conditions. This changes the gear ratio. A torodial-type design works in a similar way but runs an discs and power- rollersThe "step less" nature of its design is CVT's biggest draw for automotive engineers .Because of this, a CVT can work to keep the engine in its optimum power range, thereby increasing efficiency and mileage. A CVT can convert every point on the equine’s operating curve to a corresponding point on its own operating curve.The transmission is most popular with Japanese carmakers and Japanese supplier JATCO is a major producer. But in the US and Europe driving styles are different. Uptake has been slow despite Audi and other manufacturers having Offered CVT operations on their ranges.The DCT is, in effect, two manual gearboxes coupled together. Gear shifts are made by switching from one clutch on one gearbox to another clutch on the other. The shift quality is equal to a conventional automatic, but slip, fluid drag and hydraulic losses in the system result in only slightly improved efficienc y and acceleration over the conventional planetary automatic. Developing the controlstrategy is costly too."Resent advances in conventional automatic technology have weakened the argument to develop and set up production for CVT or DCT," says Bill Martin, managing director of transmission firm Zeroshift "Some carmakers have cancelled DCT projects because of the cost."The cheapest way to build an automatic is with an AMT. AMTs use actuators to replace the clutch pedal and gear stick of a conventional manual. They keep the high efficiency and acceleration of a manual gearbox, but the shift quality on some models is lacking. Torque interruptions and the head-nod effect are the most common complaint.SO what is the alternative? There are always new ideas in transmissions, but Zeroshift says that its technology has efficiency benefits over a manual, delivering fuel economy improvements to city driving. Shift quality can also be equal to that of a refined automatic.Zeroshift's approach is an upgrade to the AMT. The synchromesh is replaced with an advanced dog engagement system.Dog engagement has been used for many years in motor sport to allow fast shifts. Conventional dog Boxes are unsuitable for road use as the large spaces between the drive lugs or 'dogs" create backlash, an uncomfortable shunt caused by the sudden change in torque direction.Zeroshift's technology solves this problem by adding a second set of drive dogs. It has also made each of The two sets of dogs only capable of transmitti ng torque in one or other opposing directions错误!未找到引用源。

自动变速器中英文对照外文翻译文献

中英文翻译外文翻译THE RESEARCHS OFAMT SHIFTING SCHEDULESVehicular Automatic Transmission can be divided into three types: Automatic Transmission (AT), Automated Mechanical Transmission (AMT) and Continuously Variable Transmission (CVT). AMT has become a kind of transmission that is full of potentiality, due to its high transfer efficiency, low cost and easiness to manufacture.The research on AMT shifting performance is key technology in the developing. Shifting performance directly influence the market competition and industrialization of AMT.AMT has good market expectation, but during the shifting procedure, the power must be cut off which causes the poor shifting performance than AT and CVT. Only through improving the shifting performance can the commercial competence be established. So the virtual important thing is to find the way to improve shifting performance.The development of AMT can be divided into three phases: semi-automatic, automatic and intelligent. The two major part of AMT are: the hardware including the mastered object, executor, sensors and TCU; and the software performing the control strategy.The performance of AT shift influences greatly the performance of the vehicle. So the research on at shift quality is an important problem in the domain of AT researching. Shift quality control of AT is accomplished by electronic andhydraulic system. To shift smoothly, according the real time throttle valve opening and vehicle speed signal, the controller sends electronic signals to control oil pressure changing curve of the applying elements. this paper analyzes and research detailed shift quality control system，the analyzing model of shifting process and pressure changing curve of the applying elements Firstly this paper summarizes the existing evaluated quota of shift quality, and fully analyzes and introduces the existing control manner of AT shift quality.To meet the needs of research of vehicle starting and the real time control of shift, this paper puts forward a simplified model of engine-torque and a dynamics model of AT shifting process. Through the applying of the established model, this paper fully analyzes the process of the AT shifting.This paper drafts the proper oil pressure changing curve of the applying elements which can improve the AT shift quality, and gives the material calculated methods of the AG4 AT. This paper simulates the AG4 AT’s shifting process of 2H to 3H.The results of the simulation validate the established simplified models and the expected oil pressure changing curve.This paper fully analyzes the mechanism of the pressure regulating and flow controlling system of the AG4 AT, and preparatory discusses the design of the block-diagram of the shift quality control. This paper test the control system and hydraulic system of the AG4 AT by the AT hydraulic-electronic testing-bed. The result of the test validates the correction of these analyses.Automated Mechanical Transmission, as so called AMT, is a new-style transmission system. AMT technology applies the automatic technology to the manual mechanical transmission and makes the selection-gear, shift, clutch and throttle implement automatically. AMT technology is suitable for the situation of our country, and has an expansive market and development foreground. Shift schedules decide the time to shift and are the soul of the AMT. When the AMT is working, by comparing the states of the vehicle with the optimal shift schedules, the AMT decides the optimal shift time and achieves the shift automatically. This will lessen the tiredness of the driver and improve the safety. At the same time, the power and fuel-economy of the vehicle can also be improved. Theauthor chooses the shift schedule as the key technology problem to be researched and the main study aim of this thesis is to get the optimal shift schedules for the AMT and so improve the power and fuel-economy of the vehicle. Through analyzing the influence factors of power and fuel-economy for the automobile, the author get the establishment methods for the optimal-power shift schedule and optimal fuel-economy shift schedule. In order to solve the influence of mass on the shift schedule, the author presents a variable-structure-controlled shift system. This enriches the theory of shift schedules. Because the computer simulation can save a lot of manpower and material resources comparing with the true-car test, so in this thesis, the author uses the simulation toolbox MATLAB/Simulate to setup the simulation model for shift schedules. Using this model, the optimal-power shift schedule and optimal fuel-economy shift schedule above are simulated and proved to be reasonable.Shifting performance is defined as the extent of swiftness and softness during the procedure of non-power shifting and to extend the life of the power train. The index is comfort of passenger, time duration and shock, nine factors maybe influence the shifting performance, and two experimental methods can be used to investigate the nature of this performance: one is collecting real-time data during road experiment and analyzing them, the other is the simulation of the operation conditions of the vehicle.The core of the AMT system is the control strategy, the principle of the clutch engagement, shifting procedure, the choice of control method and the CAN communication between TCU and ECU can influence the shifting performance.Shifting schedule is the schedule of auto shifting time between two shifts with controlling parameters. It includes economical and dynamical shifting schedule. At present, shifting schedule of two controlling parameters (vehicle speed and opening on throttle) is mainly used. If shifting schedule is not good, shifting will not happen at right time and the working condition of engine will be severe. It will make the sound of engine abnormally and stability badly through the whole shifting procession. Sometimes even flame out Schedule of clutchengagement is determined by releasing journey of clutch, opening of throttle, shifting, vehicle speed and loading. The mainControlling goals are engaging quantity and engaging speed. The engaging control of clutch is mainly referred to the control of engaging speed. It is divided into three stages: fast, slow, fast. Shifting quality is directly influenced by the second stage. If engaging harder, it will make shifting concussion, even flame out; if engaging more slowly, it will make the friction time longer and reduce its longevity. The main controlling parameters are difference between initiative and passive and torques on both sides. When torques being approximately equal, it is proved by experiments that it can guarantee shifting time and not make concussion through the procession of engagement at the time of difference of rotating speed below some value. Meanwhile, the abrasion of clutch is not severe.Shifting procedure is the procedure through working harmoniously among engine, clutch and transmission. Their cooperation will affect shifting time heavily. In order to decrease the shifting time, the time that is spent on the friction of the clutch should be decreased first. If we intend to increase the time of non-load stage, which helps to minimize the difference of the rotary speed between the driving disc and the driven disc. If we intend to shorten the time of the non-load stage, engage the clutch immediately after the gear change. The clutch can engage in a satisfying period if the new method of controlling the engaging speed of the clutch is realizable. And the time that is spent on synchronizing the gears should also be shortened. It can be realized in the following two ways. The first is to decrease the difference of the driving gear and the driven gear. The second is to increase the shifting force. If realizing the union control between ECU and TCU by CAN bus, AMT has the best control and the best shifting performance by use of communication strategy between TCU and ECU.Influence on shifting performance by hardwareThe elements in hardware system are the basis of proper functions of AMT. Executors, sensors, electronic components, hydraulic systems have influences onshifting performance, the choice of hardware parameters is of vital important to improvement of shifting performance.With the development of the theory and technology of vehicle, the technical increasingly mature of microprocessor and the extensive application of electronic technique on the car, people have no limit at satisfying the automotive means of transportation only, facing gradually from the request of the car power, economy and easily manipulating, flexibility, safety, an d the intelligent type of car becomes the focus in the vision of people increasingly. Company’s publicity slogan of" person, car, life"," make people the center" etc. On the side exhibit the expectation of people to the automotive individuation, humanity.In the development direction of the car intelligence, the intelligence of the automatic gearbox has important effect. But the intelligence of the automatic gearbox embodies at the establishment of the shift regulation. For the fashion, for satisfying people to the new automotive request, for competitive advantage of the car type, at present, each big factory in world worked very much in shift regulation of new car type. Among those, the most arresting is AL4 automatic gearbox developed by PEUGEOT/CITROEN and RENAULT in that there unexpectedly are the 10 kinds of so many shift regulations. In the big system of person— car — road, the good and bad of the car control, reflect primarily in the coordination of the vehicle and environment (road), the coordination of the vehicle and person. And so, the electronic automatic control system can save various regulations to provide the driver to choose to use, not only having the economic regulation, motive (call to sport the type again) regulation, but also still having the general (usual) regulation, environment temperature and regulation with the outsider condition variety etc. Namely, the point of shifting can be freely enacted for every kind of regulation. In the intelligence direction of the shift regulation, everyone has made much work up to now, parts of the results has been applied on the car. But the work that developing this intelligent shift regulation still is hard, this is mainly because of:1. The intelligence degree of the current intelligent gearbox needs to be increased, and it expresses at that accurate degree to identify environment is nothigh and to identify the driver’s driving can't give satisfaction.2. The intelligence function is still not perfect. The intelligent automatically shift system is an open system; it must be continuously perfect and plentiful on the current foundation. Only this way, it can adapt to the driving request of the different drivers, reducing the driver’s labor strength, increasing the performance of the whole vehicle.Conventional design method which used in the structure parameters' design of automobile gear box and synchronizer is a time-wasting job and hard work, and it is difficult to get idea design parameters and no good to the enhancement of products qualities. The optimum design of automobile gearbox and synchronizer which take the advantage of computers seeking the best structure parameters within constrains is a perfect and high-quality design method. The main target of this article is to set up a optimum mathematical model of structure parameters of the truck's gearbox and synchronizer, the auth or use a optimum method based on K-T equation to improve the design level of automobile gearbox and synchronizer. Gear box is a important part of transmission, so the optimization of automobile gearbox is very important because the transmission is a main part of automobile. According to the design request and character sofa sort of truck, the optimum mathematical model of truck's gearbox is analyzed and set up in this article to decrease its weight and volume when the strength, stiffness, and lifetime of parts are permitted. And we can receive a satisfaction result through optimizing it's parameter for instance.Synchronizer is a important part of automobile gearbox, it make drive gear and driven gear engaged after their synchronized, so it can decrease engaged shock and noise, it can decrease shift forcing and make it comfort to gear shift and increase the life of synchronizer. The synchronized process of synchronizer is analyzed in this article; we can receive a satisfaction result through optimizing its influence parameter for instance when the synchronized time is the shortest. The optimum toolbox of MATLAB is a convenient of ware of modern optimization with fast speed and powerful function. The algorithms of different mathematical subsets are divided into different librarians in the form offunctions in MATLAB optimum toolbox. When we use them, we just call the functions and give special parameters to solve the problems and this will be fast and accurate. The author gives an optimum design for automobile gearbox and synchronizer by using the optimum toolbox of MATLAB and receives a satisfaction result.自动变速器换档规律的研究车辆自动变速器通常分为液力机械式自动变速器（简称AT）、电控机械式自动变速器（简称AMT）和机械式无级变速器（简称CVT）。

汽车变速器英语

汽车变速器英语变速器transmission (gearbox)机械式变速器mechanical transmission固定轴式变速器fixed shaft transmission中间轴变速器countershaft transmission双中间轴变速器twin countershaft transmission多中间轴变速器multi-countershaft transmission两轴式变速器twin-shaft transmission行星齿轮式变速器planetary transmission滑动齿轮变速器sliding gear trnasmission全直齿常啮式变速器fully constant mesh all spur gear transmission 全斜齿常啮式变速器fully constant mesh all helical gear transmission 全齿套变速器all dog clutch transmission多级变速器multi-speed transmission无级变速器non-stage transmission同步器式变速器synchromesh transmission直接档变速器direct drive transmission超速档变速器over drive transmision手动换档变速器manually shifted transmission直接操纵变速器direct control transmissionm远距离操纵变速器remote control trnasmission动力助力换档变速器power assisted shift transmission自动换档机械式变速器automatic mechanical tranmission半自动换档机械式变速器semi-automatic mechanical transmission 插入式多档变速器interttype multi-speed tranmission分段式多档变速器sectional type multi-speed tranmisssion组合式变速器combinatory transmission主变速器basic trnasmission副变速器splitter带主减速器的变速器final driving transmission液力变速器hydraudynamic transmission自动液力变速器automatic transmission半自动液力变速器semiautomatic transmission人工换档液力变速器manually shifted transmission分流式液力变速器split torque drive tranmisson定轴式液力变速器countershaft transmission行星式液力变速器planetary trnamission电子同步变速装置electronically synchronized transmission assembly 滑动齿轮传动sliding -gear transmission常啮合齿轮传动constant mesh transmission啮合套shift sleeve (engagement sleeve)液力传动hydraudynamic drive液力传动装置dydraudynamic drive unit液力偶合器fluid coupling液力变矩器torque converter综合式液力变矩器torque converter-coupling锁止式液力变矩器lock-up torque converter变容式液力变矩器variable capacity converter同步器synchronizer常压式同步器constant pressure synchronizer惯性式同步器inertial type of synchronizer自动增力式同步器self-servo sysnchronizer双涡轮液力变矩器double-turbine torque converter双泵轮液力变矩器double-impeller torque converter导轮可反转的变矩器torque converter with revereal reacto分动箱（分动器）transfer case辅助变速器auxiliary gear box取力器（动力输出机构）power take-off传动轴减速器dirveline retarder液力减速器hydraulic retarder单向离合器one-way clutch锁止离合器lock-up clutch叶轮member泵轮impeller涡轮turbine导轮reactro转子rotor定子stator级stage相phase叶片blade转动叶片variable blade循环圆trus section速度三角形triangle of velocities外环shell环core设计流线design path边斜角（进出口）bias(entrance and exit) 包角scroll叶片骨线mean camberline叶片角blade angle阻流板step,reflectro,baffle速度环量circulation (circulation of stream) 液流角flow angle滑差slip速比speed ratio变矩比torque ratio能容系数capacity factor零速转速stall speed空转转速racing speed变矩围torque conversion range偶合围coupling range偶合点coupling point锥形渐开线齿轮conical involute gear变速齿轮transmission gear分动齿轮（分动机构）transfer gear变速齿轮组change gear set滑动齿轮sliding gear常啮齿轮constant mesh gear倒档中间齿轮reverse idler gear行星齿轮机构planetary gears行星齿轮planet gear行星架planet carrier太阳齿轮sun gear齿轮internal or king gear外侧行星齿轮outer planet gear侧行星齿轮inner planet geear长行星齿轮long planet gear短行星齿轮shor planet gear双联行星齿轮compound planet gear中间齿轮intermediate gear(counter gear) 副轴齿轮counter shaft gear副轴counter shaft变速器输入轴transmission imput shaft变速器输出轴transmission output shaft变速器主动齿轮轴transmission drive gear shaft变速器主轴transmission main shaft变速器中间轴transmission countershaft变速器轴的刚度rigidity of shaft变速齿轮比（变速比）transmission gear ratio传动比gear ratio主压力line pressure调制压力modulated pressure真空调制压力vacuum modulator pressure速控压力governor pressure缓冲压力compensator or trimmer pressure限档压力hold presure前油泵front pump (input pump )液力传动装置充油压力hydrodynamic unit change pressure 后油泵gear pump (output pump )回油泵scavenge oil pump调压阀pressure -regulator vavle电磁阀调压阀solenoid regulator valve液力变矩器旁通阀converter bypass valve速控阀governor valve选档阀selectro valve换档阀shift valve信号阀signal valve继动阀relay valve换档指令发生器shift pattern generator档位指示器shift indicator(shift torwer)先导阀priority valve流量阀flow valve重迭阀overlap valve液力减速器控制阀retarder control valve液力起步fluid start零速起动stall start液力变矩器锁止converter lockup全液压自动换档系统hydraulic automatic control system电液式自动换档系统electronic -hydraulic automatiec换档shift升档upshift降档downshift动力换档power shfit单向离合器换档freewheel shfit人工换档manual shfit自动换档automaitc shfit抑制换档inhibited shift超限换档overrun shift强制换档forced shift换档点shift point叶片转位blade angle shift换档滞后shift hysteresis换档循环shift schedule换档规律process of power shift动力换档过程timing换档定时property of automatic shift换档品质property of automatic shft换档元件engaging element换档机构gearshift操纵杆control lever变速杆stick shift(gear shift lever)（副变速器）变速杆range selector变速叉shifting fork (gear shift fork)分动箱控制杆transfer gear shift fork变速踏板gear shift pedal变速轨（拨叉道轨）shift rail直接变速direct change(direct control)方向盘式变速column shift (handle change) 按钮控制finger-tip control槽导变速gate change空档位置neutral position直接驱动direct drive高速档top gear(high gear)低速档bottom gear(low speed gear)第一档first gear第二档second gear超速档overdirve gear经济档economic gear倒档reverse gear爬行档creeper gear驱动特性drive performance反拖特性coast performance定输入扭矩特性constant input torque performance 全油门特性full throttle performance寄生损失特性no load (parasitic losses)performance 原始特性primary characteristic响应特性response characteristic吸收特性absorption characteristic全特性total external characteristic输入特性characteristic of enhance输出特性characteristic of exit力矩特性torque factor(coefficient of moment)过载系数overloading ratio变矩系数torque ratio能容系数capacity factorr几何相似geometry similarity运动相似kinematic similarity动力相似dynamic similarity透穿性transparency万向节和传动轴universal joint and drive shaft万向节universal joint非等速万向节nonconstant velocity universal joint 等速万向节constant velocity universal joint准等速万向节near constant velocity universal joint 自承式万向节self-supporting universal joint非自承式万各节non self suporting universal joint 回转直径swing diameter等速平面constant velocity plane万向节夹角true joint angle十字轴式万向节cardan (hookes)universal joint万向节叉yoke突缘叉flange york滑动叉slip yoke滑动节，伸缩节slip joint花键轴叉slip shaft yoke轴管叉（焊接叉）tube(weld yoke)十字轴cross(spider)十字轴总成cross assembly挠性元件总成flexible universal joint球销式万向节flexible member assembly双柱槽壳housing球环ball球头轴ball head球头钉button中心球和座centering ball and seat球笼式万向节rzeppa universal joint钟形壳outer race星型套inner race保持架cage可轴向移动的球笼式万向节plunging constant velocity joint 筒形壳cylinder outer race柱形滚道星形套inner race withcylinder ball grooves偏心保持架non-concentric cage滚动花键球笼式万向节ball spline rzeppa universal joint外壳outer housing壳体inner housing球叉式万向节weiss universal joint球叉ball yoke定心钢球centering ball三球销万向节tripod universal joint三柱槽壳housing三销架spider双联万向节double cardan universal joint凸块式万向节tracta universal joint凸块叉fork yoke榫槽凸块tongue and groove couplijng凹槽凸块groove coupling传动轴drive shaft(propeller shaft)传动轴系drive line传动轴形式drive shaft type两万向节滑动的传动轴two -joint inboard slip ddiveshaft两万向节外侧滑动传动轴two joint ouboard slip drive shaft 单万向节传动轴single joint coupling shaft组合式传动轴unitized drive shaft传动轴减振器drive shaft absorber传动轴中间轴承drive shaft center bearing传动轴管焊接合件weld drive shaft tube assembly传动轴特征长度drive shaft length传动轴谐振噪声resonant noise of rive shaft传动轴的临界转速critical speed of drive shaft传动轴总成的平衡balance of drive shaft assembly允许滑动量slip相位角phase angle传动轴安全圈drive shaft safety strap驱动桥drive axle(driving axle)类型type断开式驱动桥divided axle非独立悬架式驱动桥rigid dirve axle独立悬架式驱动桥independent suspension drive axle转向驱动桥steering drive axle贯通式驱动桥tandem axles“三速”贯通轴"three-speed" tandem axles单驱动桥single drive axle多桥驱动multiaxle drive减速器reducer主减速器final drive单级主减速器single reduction final drive双级主减速器double reduction final drive前置式双级主减速器front mounted double reduction final drive后置式双级主减速器rear mounted double reduction final drive上置式双级主减速器top mounted double reducton final drive行星齿轮式双级主减速器planetary double reduction final drive贯通式主减速器thru-drive双速主减速器two speed final drive行星齿轮式双速主减速器two speed planetary final drive双级双速主减速器two speed double reduction final drive轮边减速器wheel reductor(hub reductro)行星圆柱齿轮式轮边减速器planetary wheel reductor行星锥齿轮式轮边减速器differential geared wheel reductor(bevelepicyclick hub reductor)外啮合圆柱齿轮式轮边减速器spur geared wheel reductor差速器differential锥齿轮式差速器bevel gear differential圆柱齿轮式差速器spur gear differential防滑式差速器limited -slip differential磨擦片式自锁差速器multi-disc self -locking differential凸轮滑滑块自锁差速器self-locking differential with side ring and radial cam plate 自动离合式自锁差速器automotive positive locking differential强制锁止式差速器locking differential液压差速器hydraulic differential轴间差速器interaxial differential差速器壳differential carrieer(case)主降速齿轮final reduction gear驱动轴减速比axle ratio总减速比total reduction ratio主降速齿轮减速比final reduction gear ratio双减速齿轮double reduction gear差速器主齿轮轴differential pinion-shaft差速器侧齿轮differential side gear行星齿轮spider gear(planetary pinion)螺旋锥齿轮spiral bevel gear双曲面齿轮hypoid gear格里林齿制gleason tooth奥林康型齿制oerlikon tooth锥齿轮齿数number of teeth in bevel gears and hypoid gears锥齿轮齿宽face width of tooth in bevel gears and hypoid gears平面锥齿轮plane bevel gear奥克托齿形octoid form平顶锥齿轮contrate gear齿面接触区circular tooth contact齿侧间隙backlash in circular tooth差速器十字轴differential spider差速器锁止机构differential locking -device差速器锁止系数differential locking factor差速器壳轴承carrier bearing桥壳axle housing整体式桥壳banjo housing可分式桥壳trumpet-type axle housing组合式桥壳unitized carrier-type axle housing对分式桥壳split housing冲压焊接桥壳press-welding axle housing钢管扩桥壳expanded tube axle housing锻压焊接桥壳forge welding axle housing整体铸造式桥壳cast rigid axle housing半轴axle shaft全浮式半轴full-floating axle shaft半浮式半轴semi-floating axle shaft四分之三浮式半轴three-quarter floating axle shaft 驱动桥最大附着扭矩slip torque驱动桥额定桥荷能力rating axle capactiy驱动桥减速比driveaxle ratio驱动桥质量drive axle mass单铰接式摆动轴single-joint swing axle双铰接式摆动轴double joint swig axle。

汽车车辆类手动变速器设计外文文献翻译

附录A 外文文献Manual transmissionManual transmission is the most basic of transmission of a type, its effect is changing, and provide the transmission reverse and neutral. Usually, the pilot on the clutch pedal through manipulation and in any HuanDangGan can choose between gear. There are a few manual transmission, such as motorcycles, cars, some transmission shift transmission allows only sequence, the transmission is called sequence shift transmission. In recent years, along with the electronic control components durability, computerized automatic switching clutch automatic shift of transmission in Europe since the start line are more and more popular, car V olkswagen and ford are sold in the city on the double clutch provide updated generation, transmission from the start with two clutches, every shift automatically switch to another group of clutch engagement, need not as quick as traditional in manual have only one group separated again clutch engagement, shifting speed is faster, more small change gear vibration.Internal structure: shaftDecorate a form of transmission shaft type usually have two and three shaft type two kinds. Usually a rear wheel drive car will adopt three axis type, i.e. input shaft transmission, the output shaft and oart. Input shaft front associated with engine, borrow clutch output shaft back-end through the flange and universal transmission device connected.Input shaft and the output shaft in the same horizontal line, with their oart parallel arrangement. From the input shaft power through the gears to preach to the output shaft oart again. In many input and output shaft transmission shaft could engage in together, so to power, then the gear oart called directly. Direct files through uniaxial transmission, the ratio of 1:1, the highest transmission efficiency. Even in the transmission directly, cannot offer the input shaft, and the output shaft is decorated in a straight line to reduce work needed to inherit the torque transmission.Reversing deviceGenerally speaking, the reverse gear reducer than can alsosynchronizerIn synchronized meshing gears have type synchronizer Settings, can make two gear engagement in the first, before the speed reached synchronizer in all of this manual gear transmission of the car has been usedClutch,The clutch is can make two gear with a separate with mechanical parts, two gear transmission power can be combined, but when to speed, so will depend on the first two gear clutch, change gear ratio, the two gear transmission power, continue again Control：GearIn simple terms, the high speed, low speed ShengDang when the time cameEvery car high speedCompared with automatic transmissionThis refers to the automatic transmission of traditional hydraulic transmission, namely through hydraulic torque converter and planetary gear transmission power automatic transmission.Advantages：transmission efficiency than automatic gearboxes for high, of course, theoretically can compare economical.maintenance will be cheaper than transmission.If you want to higher cost, can begin from both the row of convenience and high power附录B外文文献的中文翻译手动变速器手动变速器是汽车变速器中最基本的一种类型，其作用是改变传动比，并提供倒档和空档。

汽车变速器外文文献翻译、中英文翻译、外文翻译

TRANSMISSIONManual transmission is one of the most common transmission, referredto as MT. Its basic structure in a single sentence is a central axis, twoinput shaft, namely, the axial and axial oart, they constituted the transmission of the subject, and, of course, a reverse axis. Manual transmission gear transmission and manual, contain can in axial sliding gears, through different meshing gears to change gear of torsional purpose.The typical structure and principle of the manual transmission.Input shaft also says, it's in front of the spline shaft directly withclutch platen, thus the spline set by the engine relay of torque. The firstshaft gear meshing gears, often with oart as input shaft, and the gear on oart will turn. Also called shaft, because even more solid shaft of gear. The output shaft, and the second shaft position have the drive shaftgear, may at any time and under the influence of the control devices and the corresponding oart gear, thus changing the speed and torque itself. The output shaft is associated with tail spline shaft torque transmissionshaft, through to drive to gear reducer.Predictably, transmission gear drive forward path is: input shaftgear - oart gnaws gnaws gear - because the second shaft gear - corresponding corresponding gear. Pour on the axle gear can also controldevice, by moving axis in the strike, and the output shaft gear and oart gear, in the opposite direction.Most cars have five forward and reverse gear, each one has certain ratio,the majority of gear transmission more than 1, 4 gears transmission is 1, called directly, and ratio is less than 1 of article 5 gear shift accelerated called. The output axis gear in the mesh position, can acceptpower transmission.Due to the gearbox output shaft to input shaft and the speed of theirgear rotating, transform an "synchronization problem". Two rotating speeddifferent meshing gears forcibly inevitable impact and collision damage gear. Therefore, the old transmission shift to use "two feet clutch" method, ShengDang in neutral position shift to stay for a while, in the space location on the door, in order to reduce gear speed. But this operation is more complex, difficult to grasp accurately. Thereforedesigners to create "synchronizer", through the synchronizer will makethe meshing gears reach speed and smooth.Currently the synchronous transmission adopts is inertial synchronizer, it mainly consists of joints, synchronizer lock ring etc,it is characteristic of the friction effect on achieving synchronization.Mating, synchronizer and mating locking ring gear tooth circle have chamfering (locking horns), the synchronizer lock ring inside surface ofgear engagement ring and the friction surface contact. The lock horns with cone when designing the proper choice, has been made to the surface friction of meshing gears with gear synchronous, also can rapid producesa locking function, prevent the synchronous before meshing gears. When synchronous lock ring of gear engagement with surface contact surface, the outer circle in friction torque under the action of gear speed rapiddecrease (increase) or to synchronous speed equal, both locking ring spunconcurrent, relative to lock ring gear synchronous speed is zero, thus inertia moment also disappear, then in force, driven by the junction of unimpeded with synchronous lock ring gear engagement, and further to engagement with the engagement ring gear tooth and complete shift process.functional (1) change ratio, meet different driving conditions for tractionengine, the need to work in the favorable conditions and meet the speed may request. In a wide range of vehicle speed changing the size and automobile driving wheel on the size of the torque. Due to the differentdemands, automobile driving conditions of vehicle speed and torque can drive in a broad range of change. For example, in high speed can be reachedon 100km/h, while in the urban district, speed in 50km/h. In the empty flat roads, road, very little resistanceWhen When carrying carrying carrying uphill, uphill, uphill, driving driving driving resistance resistance resistance was was was great. great. great. And And And the thecharacteristics of automobile engine speed range is lesser, and torque changes more cannot meet the actual conditions range. (2) drive backward, to satisfy the need to drive car backwards. Realizing the backing, engine crankshaft are generally only to a direction,and sometimes need to back, so, often used in the transmission of reverseto realize the car drive backward.(3) in power, interruption, idle running engine starting, auto shift or need to stop the dynamic output, interrupted to transfer the power ofthe drive wheels.(4), when the clutch engagement realize gap, gearbox can not power output. For example, can ensure drivers in engine flameout loosen the clutch when leaving drivers seat.constituteBy continuously variable transmission gearbox and speed control twoparts. The main function of the variable transmission torque and speed is the change of numerical and direction, The main function of theoperation is controlled transmission mechanism, realize thetransformation of transmission ratio, shift to speed torque. Principle,Mechanical transmission main application of the principle of geartransmission velocity. Say simply, there are a number of differenttransmission gearbox group of gear pair of vehicle, and behavior, is alsoshifting gears trunk by manipulating institutions make different gearpair work. As in low-speed, ratio of gear pair work, and in high-speed, let ratio of small gear pair work.Classification,1, according to the change of transmission, transmission way, there can be divided into grade level and synthetical three.(a) : several levels of transmission ratio, can choose the fixed by gear. And can be divided into: gear axis of ordinary gear transmission and fixed gear planetary gear (part) of planetary gear transmission axisof rotation.b) stepless type transmission: ratio can be continuous variation within a certain range, commonly, mechanical and electric hydraulic typeetc.(c) comprehensive type transmission by a class type, transmission andstepless type transmission, the ratio of the maximum and minimum values can be in between the scope for several section stepless change.2, press control can be divided into compulsory manipulation, transmission, automatic control and semi-automatic control 3 kinds.(a) mandatory manipulation of transmission by direct manipulation, change gear shift lever drivers.(b) automatic control type transmission ratio of choice and change: the shift is automatic. Drivers simply manipulate accelerated pedal, transmission can according to the engine speed and load control signal signal actuator, realize the transformation of gear.(c) semi-automatic control type transmission can be divided into twokinds: one kind is part of gear, automatic shift gears, manual (mandatory)shift, Another kind is selected by button in mining under gear clutch pedalor accelerated release pedal, the executing agency to shift. Transmission of maintenance1 transmission gears maintenanceTransmission gears are always changing speed, load, gear toothsurface by bluntThe impact of load, which struck gear tooth surface (especially) damage. Common injuries are:(1) gear transmission is worn gear under normal working conditions, shows the wear uniform angled tooth gear, long wear along the directionTooth thickness shouldof the tooth should not exceed 30 percent longer,not exceed usd, Gear tooth surface area of not less than two-thirds, Running gear mesh clearance shall be commonly used, 0.15-0.26 mm to 0.8 mm limit, Gear engagement between 0.10-0.15 mm, should use limit for 0.60mm. Available batches or soft metal rivalries. If more than clearance method for measuring the pairs, should be replaced.due to fail togear clearance is mainly(2) gear teeth,broken toothmeet the requirements, gear meshing parts or work under great impact load.If you are not greater than 2mm edge of gear oil can smile ShiXiuafter-grinding continue to use, If the scope or have more than three pairs,should smile.(3) often mesh surface of the helical gear often wear face due. 10-0.30mm, in order to ensure that the axial clearance, if tooth gear good operation within the wear, can repair tank, but the amount of grinding grinding should not exceed. 50.(4) often meshing gears shaft neck, needle roller bearing and wear into seat hole hole meshing gears seat with needle bearings and shaft neckwith clearance should be 0.01 - three 0.08 mm, otherwise must be changed.2 the overhaul. Transmission shellGearbox shell is transmissions, to ensure the basis of each part of the transmission is correct position, work under load. Common injuries are:(1) the abrasion of shell bearing hole hole wear will destroy its bearing assembly relation with the bearing, the direct impact of input, output shaft transmission position relative to the hole. Bearing seat with0-0.03 mm clearance shall be used for the maximum limit, should be replacedor 0.10 mm) shell or pile hole repair.(2) shell threaded holes repair note oil ROM plug hole, dumping screwhole threads connecting bolts damage and between shellThreaded hole, can take damage with screw repair.3 transmission shaft of maintenanceTransmission in the process of operation, each bearing the torsionalmoment of change, and bending moment, JianChi part is under pressure, impact and sliding friction etc. Various axial load of common injuries are:(1) the shaft neck and neck too worn wear axis gear axis will not onlyoffset, and can bring the change gear clearance, when making noisetransmission shaft neck. Also make coordination relationship with bearingdamage, may cause ablation. So roller bearings in a place with no more than 0.02 axis wear mm needle bearing shaft neck wear with place, otherwisethan 0.07 mm landscape change or chrome.side of thein stress and more seriouswear JianChi wear(2) JianChispline. JianChi with check, when more than 0.25 or and wear with more thanusd keyway apprentice, gear engagement mm, combining with the gear with JianChi weeks, according to the mm apprentice woodruff key and shaft neckkeyways apprentice to JianChi 0.08 mm over there when the keyway weeks, or should be repaired or replaced shaft.(3) transmission shaft bending thimble resist transmission shaft withmaintenance on both ends of the roof, using pinhole batches of shaft radial micrometers, check the deviation should be less than 0.10 mm) pressure correction repair.4 synchronizer overhaulA. lock ring type inertial synchronizer ring maintenance: lock hornscone a about six degrees - 7 degrees, in use, cone Angle deformation ofrapid synchronous, and not be change in time. B. B. locking locking locking pin pin pin type type type inertial inertial inertial synchronizer: synchronizer: synchronizer: locking locking locking pin pin pin type type synchronizer major damage for cone rim wear, when, cone-disk cone rim on the thread of groove depth 0.40 mm wear to 010mm deep, should be replaced.If the cone rim are scratching, face to face, but two turning machining, must not be more than 1mm should be replaced.变速器手动变速器是最常见的变速器，简称MT MT。

汽车变速器设计Transmission-design毕业论文外文文献翻译及原文

毕业设计（论文）外文文献翻译文献、资料中文题目：汽车变速器设计文献、资料英文题目：Transmission design文献、资料来源：文献、资料发表（出版）日期：院（部）：专业：机械设计制造及其自动化班级：姓名：学号：指导教师：翻译日期： 2017.02.14毕业论文（设计）外文文献翻译汽车变速器设计我们知道，汽车发动机在一定的转速下能够达到最好的状态，此时发出的功率比较大，燃油经济性也比较好。

因此，我们希望发动机总是在最好的状态下工作。

但是，汽车在使用的时候需要有不同的速度，这样就产生了矛盾。

这个矛盾要通过变速器来解决。

汽车变速器的作用用一句话概括，就叫做变速变扭，即增速减扭或减速增扭。

为什么减速可以增扭，而增速又要减扭矩呢？设发动机输出的功率不变，功率可以表示为N=wT，其中w是转动的角速度，T是扭矩。

当N固定的时候，w与T是成反比的。

所以增速必减扭矩，减速必增扭矩。

汽车变速器齿轮传动就根据变速变扭的原理，分成各个档位对应不同的传动比，以适应不同的运行状况。

一般的手动变速器内设置输入轴、中间轴和输出轴，又称三轴式，另外还有倒档轴。

三轴式是变速器的主体结构，输入轴的转速也就是发动机的转速，输出轴转速则是中间轴与输出轴之间不同齿轮啮合所产生的转速。

不同的齿轮啮合就有不同的传动比，也就有了不同的转速。

例如郑州日产ZN6481W2G型SUV车手动变速器，它的传动比分别是：1档3.704:1；2档2.202:1；3档1.414:1；4档1:1；5档（超速档）0.802:1。

当汽车启动司机选择1档时，拨叉将1/2档同步器向后接合1档齿轮并将它锁定输出轴上，动力经输入轴、中间轴和输出轴上的1档齿轮，1档齿轮带动输出轴，输出轴将动力传递到传动轴上（红色箭头）。

典型1档变速齿轮传动比是3:1,也就是说输入轴转3圈，输出轴转1圈。

当汽车增速司机选择2档时，拨叉将1/2档同步器与1档分离后接合2档齿轮并锁定输出轴上，动力传递路线相似，所不同的是输出轴上的1档齿轮换成2档齿轮带动输出轴。

机械毕业设计英文外文翻译39变速器概述 (2) - 副本

附录附录A英文科技文献Transmission OverviewTransmission gearbox's function the engine's output rotational speed is high, the maximum work rate and the maximum torque appears in certain rotational speed area. In order to display engine's optimum performance, must have a set of variable speed gear, is coordinated the engine the rotational speed and wheel's actual moving velocity. The transmission gearbox may in the automobile travel process, has the different gear ratio between the engine and the wheel, through shifts gears may cause the engine work under its best power performance condition. Transmission gearbox's trend of development is more and more complex, the automaticity is also getting higher and higher, the automatic transmission will be future mainstream.Automotive Transmission's mission is to transfer power, and in the process of dynamic change in the transmission gear ratio in order to adjust or change the characteristics of the engine, at the same time through the transmission to adapt to different driving requirements. This shows that the transmission lines in the automotive transmission plays a crucial role. With the rapid development of science and technology, people's car is getting higher and higher performance requirements, vehicle performance, life, energyconsumption, such as vibration and noise transmission depends largely on the performance, it is necessary to attach importance to the study of transmission.Transmission gearbox's pattern the automobile automatic transmission common to have three patterns: Respectively is hydraulic automatic transmission gearbox (AT), machinery stepless automatic transmission (CVT), electrically controlled machinery automatic transmission (AMT). At present what applies is most widespread is, AT becomes automatic transmission's pronoun nearly.AT is by the fluid strength torque converter, the planet gear and the hydraulic control system is composed, combines the way through the fluid strength transmission and the gear to realize the speed change bending moment. And the fluid strength torque converter is the most important part, it by components and so on pump pulley, turbine wheel and guide pulley is composed, has at the same time the transmission torque and the meeting and parting function.And AT compare, CVT has omitted complex and the unwieldy gear combination variable transmission, but is two groups of band pulleys carries on the variable transmission. Through changes the driving gear and the driven wheel transmission belt's contact radius carries on the speed change. Because has cancelled the gear drive,therefore its velocity ratio may change at will, the speed change is smoother, has not shifted gears kicks the feeling.AMT and the hydraulic automatic transmission gearbox (AT) is the having steps automatic transmission equally. It in the ordinary manual transmission gearbox's foundation, through installs the electrically operated installment which the microcomputer controls, the substitution originally coupling's separation which, the joint and the transmission gearbox completes by the manual control elects to keep off, to shift gears the movement, realizes fluid drive.Manual transmission gear mainly uses the principle of deceleration. Transmission within the group have different transmission ratio gear pair, and the car at the time of shift work, that is, through the manipulation of institutions so that the different transmission gear pair work. Manual transmission, also known as manual gear transmission, with axial sliding in the gears, the meshing gears through different speed to achieve the purpose of torque variation. Manual shift transmission can operate in full compliance with the will of the driver, and the simple structure, the failure rate is relatively low, value for money.Automatic transmission is based on speed and load (throttle pedal travel) for two-parameter control gear in accordance with the above two parameters to automatically take-off and landing.Automatic transmission and manual transmission in common, that is, there are two-stage transmission, automatic transmission can only speed the pace to automatically shift, manual transmission can be eliminated, "setback" of the shift feel.Automatic transmission is a torque converter, planetary gears and hydraulic manipulation of bodies, through the hydraulic transmission and gear combination to achieve the purpose of variable-speed torque variation.Also known as CVT-type continuously variable CVT. This transmission and automatic transmission gear generally the biggest difference is that it eliminates the need of complex and cumbersome combination of variable-speed gear transmission, and only two groups to carry out variable-speed drive pulley.CVT transmission than the traditional structure of simple, smaller and it is not the number of manual gear transmission, no automatic transmission planetary gear complex group, mainly rely on the driving wheel, the driven wheel and the transmission ratio brought about by the realization of non-class change.Widely used in automotive internal combustion engine as a power source, the torque and speed range is very small, and complex conditions require the use of motor vehicles and the speed of the driving force in the considerable changes in the scope. Toresolve this contradiction, in the transmission system to set up the transmission to change transmission ratio, the expansion of the driving wheel torque and speed range in order to adapt to constantly changing traffic conditions, such as start, acceleration, climbing and so on, while the engine in the most favorable conditions to work under the scope; in the same direction of rotation of the engine under the premise of the automobile can be driven back; the use of neutral, interruption of power transmission, in order to be able to start the engine, idle speed, and ease of transmission or power shift . Transmission is designed to meet the above requirements, so that the conditions in a particular vehicle stability.In addition to transmission can be used to meet certain requirements, but also to ensure that it and the car can have a good match, and can improve the car's power and economy to ensure that the engine in a favorable condition to increase the scope of the work of the use of motor vehicles life, reduce energy consumption, reduce noise, such as the use of motor vehicles.Today the world's major car companies CVT are very active in the study. The near future, with electronic control technology to further improve, electronically controlled Continuously VariableTransmission-type is expected to be a wide range of development and application.附录B文献翻译变速器概述发动机的输出转速非常高，最大功率及最大扭矩在一定的转速区出现。

汽车与变速箱毕业设计外文翻译

Motors and gearboxesAs the world energy crisis, and the war and the energy consumption of oil -- and are full of energy, in one day, someday it will disappear without a trace. Oil is not in resources. So in oil consumption must be clean before finding a replacement. With the development of science and technology the progress of the society, people invented the electric car. Electric cars will become the most ideal of transportation.In the development of world each aspect is fruitful, especially with the automobile electronic technology and computer and rapid development of the information age. The electronic control technology in the car on a wide range of applications, the application of the electronic device, cars, and electronic technology not only to improve and enhance the quality and the traditional automobile electrical performance, but also improve the automobile fuel economy, performance, reliability and emissions purification. Widely used in automobile electronic products not only reduces the cost and reduce the complexity of the maintenance. From the fuel injection engine ignition devices, air control and emission control and fault diagnosis to the body auxiliary devices are generally used in electronic control technology, auto development mainly electromechanical integration. Widely used in automotive electronic control ignition system mainly electronic control fuel injection system, electronic control ignition system, electronic control automatic transmission, electronic control (ABS/ASR) control system, electronic control suspension system, electronic control power steering system, vehicle dynamic control system, the airbag systems, active belt system, electronic control system and the automatic air-conditioning and GPS navigation system etc. With the system response, the use function of quick car, high reliability, guarantees of engine power and reduce fuel consumptionand emission regulations meet standards.The car is essential to modern traffic tools. And electric cars bring us infinite joy will give us the physical and mental relaxation. Take for example, automatic transmission in road, can not on the clutch, can achieve automatic shift and engine flameout, not so effective improve the driving convenience lighten the fatigue strength. Automatic transmission consists mainly of hydraulic torque converter, gear transmission, pump, hydraulic control system, electronic control system and oil cooling system, etc. The electronic control of suspension is mainly used to cushion the impact of the body and the road to reduce vibration that car getting smooth-going and stability. When the vehicle in the car when the road uneven road can according to automatically adjust the height. When the car ratio of height, low set to gas or oil cylinder filling or oil. If is opposite, gas or diarrhea. To ensure and improve the level of driving cars driving stability. Variable force power steering system can significantly change the driver for the work efficiency and the state, so widely used in electric cars. VDC to vehicle performance has important function it can according to the need of active braking to change the wheels of the car, car motions of state and optimum control performance, and increased automobile adhesion, controlling and stability. Besides these, appear beyond 4WS 4WD electric cars can greatly improve the performance of the value and ascending simultaneously. ABS braking distance is reduced and can keep turning skills effectively improve the stability of the directions simultaneously reduce tyre wear. The airbag appear in large programs protected the driver and passenger's safety, and greatly reduce automobile in collision of drivers and passengers in the buffer, to protect the safety of life.Intelligent electronic technology in the bus to promote safe driving and that the other functions. The realization of automatic driving through various sensors. Except some smart cars equipped withmultiple outside sensors can fully perception of information and traffic facilities and to judge whether the vehicles and drivers in danger, has the independent pathfinding, navigation, avoid bump, no parking fees etc. Function. Effectively improve the safe transport of manipulation, reduce the pilot fatigue, improve passenger comfort. Of course battery electric vehicle is the key, the electric car battery mainly has: the use of lead-acid batteries, nickel cadmium battery, the battery, sodium sulfide sodium sulfide lithium battery, the battery, the battery, the flywheel zinc - air fuel cell and solar battery, the battery. In many kind of cells, the fuel cell is by far the most want to solve the problem of energy shortage car. Fuel cells have high pollution characteristics, different from other battery, the battery, need not only external constantly supply of fuel and electricity can continuously steadily. Fuel cell vehicles (FCEV) can be matched with the car engine performance and fuel economy and emission in the aspects of superior internal-combustion vehicles.Along with the computer and electronic product constantly upgrading electric car, open class in mature technology and perfected, that drive more safe, convenient and flexible, comfortable. Now, the electric car from ordinary consumers distance is still very far away, only a few people in bandwagon. Electric cars with traditional to compete in the market, the car will was electric cars and intelligent car replaced. This is the question that day after timing will come. ABS, GPS, and various new 4WD 4WS, electronic products and the modern era, excellent performance auto tacit understanding is tie-in, bring us unparalleled precision driving comfort and safety of driving.The role of transmissionThe output of the engine speed is very high, maximum power and maximum torque at a certain speed area. Engine in order to exert the best performance, it is necessary to have a variable-speed devices, to coordinate the engine speed and the actual wheel speed. Transmissionprocess in the car, in between the engine and the wheels have a different gear ratio, by shifting the engine can work at their best performance of state power. Transmissions are the development trend of more and more complex, increasingly high degree of automation, automatic transmission will be the mainstream of the future. Transmission typeAutomotive automatic transmission has three common forms: namely, Automatic Transmission (AT), mechanical stepless automatic transmission (CVT), electric-controlled mechanical automatic transmission (AMT). At present, the most widely used is the AT, AT almost become synonymous with automatic transmission.AT Torque by Torque, and planetary gear and hydraulic control system components, through the hydraulic transmission and gear portfolio approach to achieve variable-speed torque variation. One of Hydraulic Torque is the most important parts, which pump wheels, turbines and components, such as guide pulley of the transmission of both torque and the role of clutch.AT compared with, CVT save the complex and cumbersome combination of variable-speed gear transmission, but the two groups to carry out variable-speed drive pulley. By changing the driving wheel and driven wheel contact belt speed radius. Canceled because of gear, so the transmission ratio can change speed more smoothly, without shifting sense of the sudden jump.AMT and Automatic Transmission (AT) are the same class has automatic transmission. It is in general based on the manual transmission, through the installation of microcomputer-controlled electric device to replace the original finish by the manual operation of the clutch of separation, joint, and block transmission of the election, motion shift, automatic shift implementation.The general structure of automobile transmission1. Easy transmission of the basic structure: the shell, transmissionand manipulation of some parts.(1) Shell: Shell is the basic pieces of support for the installation of transmission and storage of all parts lubricants. Has installed its bearing on the precision boring. Transmission under varying load, so the stiffness of the shell should be enough, there is to strengthen the wall, the shape of the complex, as many castings (gray cast iron materials, commonly used HT200).In order to facilitate the installation, transmission and manipulation of some Split parts are frequently made, cover with the housing connected by bolts and reliable positioning. Shell has come on up, I put the oil, check oil foot mouth, should also be taken into heat dissipation.(2) Transmission parts: is the gear, shaft, bearings and other transmission parts. Geometry axis through strength, stiffness calculation. Mainly due to decide on the stiffness, while the carbon steel and alloy steel elastic modulus almost equal, so the general use of carbon steel (commonly used 45 steel). Only one gear with the shaft or axle load made serious only by steel. Shaft and gear for many spline connection (for neutral good, reliable transmission of power, a small compressive stress, etc.). Spline shaft bearing parts and let the surface hardening treatment by the Department. Shaft with rolling bearing supports many, easy lubrication, high efficiency, small radial clearance, axial positioning should be reliable. Many ways to use splash lubrication (υ> 25m / s, as long as the appropria te viscosity apparently succumbed to the wall).(3) to manipulate parts: the main components located inside the transmission cover.2. The composition of the structural characteristics of transmission: there is easy and efficient transmission, the advantagesof simple easy-to-use-Jun mine but a few files, i changed the scope of small (traction, speed small), file number should be taken only atcertain limited Cut used. If the increase in the scope of i, then increase the size so that transmission, axle span increase, both in order to increase the file-axis span of a few do not make too large, transmission can be formed. The composition of the so-called transmission, usually from both a combination of easy transmission, one of a few more files as the main transmission, less transmission known as the deputy. Transmission component of advantages:(1) can reduce the number of gears, and a few more files to reduce the number of gear the more obvious advantages. Easy compared with the transmission, it can shorten the length of shaft to reduce the transmission of the external size and weight, and can easily be more than one reverse. Into the file so the current number of files more than six hours, almost all transmission components.(2) transmiss ion: the rate of change of Ω than large: if the main transmission gear ratio change rate Ωzu = 3, Vice transmission Ωfu = 4 is Ω = 12; easy transmission arrangement Ω = 12, the structure is often difficult to reasonable.Composed of transmission of disadvantage:(1) file groups have correspondence between the transmission ratio, so that each file is not 2, (the speed and traction) are ideal.(2) manipulation of trouble shifting, and sometimes both want to manipulate some speed, if not for the flower arrangement will shift memory.In order to reduce the control action, it is best to shift the order. Calling attention to the grade for this presentation ten out files so that the first group of transmission ratio is greater than all of the first file group 11 to the majority of phase transformation from the stall speed of just fixing the main purpose of this is the only way most convenient. GM Hydra-MaticGeneral can be regarded as the founder of automotive automatic transmission has been. The world's first automatic transmission is usedin the United States in 1940 Oldsmobile automobile on a common, and it is a tandem structure of planetary gear transmission fluid control. Applies to the Cadillac STS-V's latest six-speed Hydra-Matic automatic transmission 6L80, may be regarded as the world's most advanced Automatic Transmission (AT) has been.Automatic Transmission For example, it has an internal gear is also divided, but the abolition of the clutch. The more gear, then shift, the better the ride comfort. At present, common automatic transmission are generally four-speed, that is, block has four forward. 6L80 has six forward gear, the number of teeth than the one block are separately 2.36,3 block 4.03,2 block 0.85,6 block 1.15,5 block 1.53,4 block 0.67. Obviously, it is more than 4-speed automatic transmission with a greater ratio and smaller ratio of the difference, it is more smooth when speed.Outside the block a few more besides, 6L80 also has a lot of unique special skills:Driver shift control system (DSC) - through its driver into a vehicle without the clutch from the automatic five-speed, high-performance手动挡. Drivers under the food stalls to the DSC on the location, the light touch can be specified at the scope of the neat, smooth implementation block addition and subtraction. The driver to switch control mode, the transmission control module monitors the vehicle speed, engine torque and gear used to decide whether to automatically add block to avoid damage to the powertrain. Each have a sliding gear on the clutch, can be carried out on all five gear engine braking.Performance computing systems down block (PAL) - in a row after a high-speed, stop升挡maintain engine braking. Transmission control module based on driving behavior to decide whether to activate the device. If the system found in the vehicle slowed down before turning, transmission may be even lower in order to avoid stall twoblock.Performance computing shift system (PAS) - turn off the accelerator in high-speed automatic adjustment of the level of acceleration gear, re-open at throttle-down power to elevate. Once the transmission control module to detect high levels of command, this function immediately.This transmission also reduced in the rugged mountain road "Shift Search," the stability of the shift functions, with the lower block BrakeAssist monitoring function, electronically controlled engine braking, as well as to adapt to these high-power, high torque engines are the new need a new dual-chip torque converter. In addition, SRX is also equipped with high-performance downhill Downgrade Detection Brake Assist.Chinese car market gearboxChina's auto market is in a transmission period of rapid development. 2007 Chinese sales of 8,791,500 motor vehicles, motor vehicle production in 2008 will exceed nine million sales, car sales in 2010 will reach 12.63 million. Size of the market in the automotive industry's rapid growth, China is faced with a major transmission industry opportunities. In 2006 the market scale of China's automobile transmission up to 300 billion yuan and more than 20% annual growth is expected in 2010 is expected to reach 60 billion yuan.汽车与变速箱随着世界能源危机的持续，以及战争和能源-----石油的消耗及汽车饱有量的增加，能源在一天一天下降，终有一天它会消失的无影无踪。

自动五速手动变速箱- EASYTRONIC 3.0外文文献翻译、中英文翻译

附录1：外文翻译自动五速手动变速箱- EASYTRONIC 3.0。

The new Opel/Vauxhall公司在2014年秋季推出了自动化五速手动变速箱(MTA) Easytronic 3.0。

该变速器使用电动液压离合器和位移控制，其主要部件主来自手动变速箱(F17-5)。

这个新的变速器新增了停止/启动功能，而他的控制系统是根据安全标准ISO 26262设计的。

DIPL.-ING。

THOMAS ZEMMRICH是德国Adam Opel公司变速器自动化MT系统组长和技术专家。

持续战略2014年秋季，欧宝/沃克斯豪尔公司引进了新一代自动化手动变速器MTA(手动变速器) Easytronic 3.0。

这延续了公司自2001年开始战略，通过这种低成本的变速器有效代替小型车辆的常规自动变速器。

由于传统变速器在传动过程中有扭矩中断会使车辆在驾驶时舒适度不佳。

因此，他们设计了与传统变速箱相比操作操作更简便，燃油经济性更好的，并且带有运动驾驶风格的自动化变速器。

这篇文章介绍了欧宝新推出的MTA 的设计和性能特点。

变速器的设计这款新推出的变速器是在Opel公司五速手动变速箱(F17-5)的基础上开发的，它的扭矩容量为190Nm。

这款变速器用在中小型汽油发动机手动档车型上的排量高达1.4L，用在材油机手动挡车型上的排量为1.3L。

虽然拥有高达200Nm转矩容量的6速变速箱越来越受到欢迎，但是考虑到成本，目前五速版的变速箱任是小型汽车的首选。

这款变速器采用拨叉和同步器进行换档，所选的齿轮组传动比范围为5.53，这对于一个五速变速箱来说是一个相当大的传动比范围。

由于较大的传动比范围，使得一档工作时不需要输入较大的转矩，使驾驶舒适性能得到提高，且在五档工作时不需要发动机输入较高的转速就可以获得较高的驾驶速度，还能够降低噪音，提高燃油经济性。

后者是实现自动手动变速器而不损失任何性能，因为加速度可以通过快速自动降档来实现。

汽车变速器英语

汽车变速器英语变速器 transmission (gearbox)机械式变速器 mechanical transmission固定轴式变速器 fixed shaft transmission中间轴变速器 countershaft transmission双中间轴变速器 twin countershaft transmission多中间轴变速器 multi-countershaft transmission两轴式变速器 twin-shaft transmission行星齿轮式变速器 planetary transmission滑动齿轮变速器 sliding gear trnasmission全直齿常啮式变速器 fully constant mesh all spur gear transmission全斜齿常啮式变速器 fully constant mesh all helical gear transmission 全齿套变速器 all dog clutch transmission多级变速器 multi-speed transmission无级变速器 non-stage transmission同步器式变速器 synchromesh transmission直接档变速器 direct drive transmission超速档变速器 over drive transmision手动换档变速器 manually shifted transmission直接操纵变速器 direct control transmissionm远距离操纵变速器 remote control trnasmission动力助力换档变速器 power assisted shift transmission自动换档机械式变速器 automatic mechanical tranmission半自动换档机械式变速器 semi-automatic mechanical transmission插入式多档变速器 interttype multi-speed tranmission分段式多档变速器 sectional type multi-speed tranmisssion组合式变速器 combinatory transmission主变速器 basic trnasmission副变速器 splitter带主减速器的变速器 final driving transmission液力变速器 hydraudynamic transmission自动液力变速器 automatic transmission半自动液力变速器 semiautomatic transmission人工换档液力变速器 manually shifted transmission分流式液力变速器 split torque drive tranmisson定轴式液力变速器 countershaft transmission行星式液力变速器 planetary trnamission电子同步变速装置 electronically synchronized transmission assembly 滑动齿轮传动 sliding -gear transmission常啮合齿轮传动 constant mesh transmission啮合套 shift sleeve (engagement sleeve)液力传动 hydraudynamic drive液力传动装置 dydraudynamic drive unit液力偶合器 fluid coupling液力变矩器 torque converter综合式液力变矩器 torque converter-coupling锁止式液力变矩器 lock-up torque converter变容式液力变矩器 variable capacity converter同步器 synchronizer常压式同步器 constant pressure synchronizer惯性式同步器 inertial type of synchronizer自动增力式同步器 self-servo sysnchronizer双涡轮液力变矩器 double-turbine torque converter双泵轮液力变矩器 double-impeller torque converter导轮可反转的变矩器 torque converter with revereal reacto分动箱（分动器） transfer case辅助变速器 auxiliary gear box取力器（动力输出机构） power take-off传动轴减速器 dirveline retarder液力减速器 hydraulic retarder单向离合器 one-way clutch锁止离合器 lock-up clutch叶轮 member泵轮 impeller涡轮 turbine导轮 reactro转子 rotor定子 stator级 stage相 phase叶片 blade转动叶片 variable blade循环圆 trus section速度三角形 triangle of velocities外环 shell内环 core设计流线 design path边斜角（进出口） bias(entrance and exit)包角 scroll叶片骨线 mean camberline叶片角 blade angle阻流板 step,reflectro,baffle速度环量 circulation (circulation of stream) 液流角 flow angle滑差 slip速比 speed ratio变矩比 torque ratio能容系数 capacity factor零速转速 stall speed空转转速 racing speed变矩范围 torque conversion range偶合范围 coupling range偶合点 coupling point锥形渐开线齿轮 conical involute gear变速齿轮 transmission gear分动齿轮（分动机构） transfer gear变速齿轮组 change gear set滑动齿轮 sliding gear常啮齿轮 constant mesh gear倒档中间齿轮 reverse idler gear行星齿轮机构 planetary gears行星齿轮 planet gear行星架 planet carrier太阳齿轮 sun gear内齿轮 internal or king gear外侧行星齿轮 outer planet gear内侧行星齿轮 inner planet geear长行星齿轮 long planet gear短行星齿轮 shor planet gear双联行星齿轮 compound planet gear中间齿轮 intermediate gear(counter gear)副轴齿轮 counter shaft gear副轴 counter shaft变速器输入轴 transmission imput shaft变速器输出轴 transmission output shaft变速器主动齿轮轴 transmission drive gear shaft变速器主轴 transmission main shaft变速器中间轴 transmission countershaft变速器轴的刚度 rigidity of shaft变速齿轮比（变速比） transmission gear ratio传动比 gear ratio主压力 line pressure调制压力 modulated pressure真空调制压力 vacuum modulator pressure速控压力 governor pressure缓冲压力 compensator or trimmer pressure限档压力 hold presure前油泵 front pump (input pump )液力传动装置充油压力 hydrodynamic unit change pressure 后油泵 gear pump (output pump )回油泵 scavenge oil pump调压阀 pressure -regulator vavle电磁阀调压阀 solenoid regulator valve液力变矩器旁通阀 converter bypass valve速控阀 governor valve选档阀 selectro valve换档阀 shift valve信号阀 signal valve继动阀 relay valve换档指令发生器 shift pattern generator档位指示器 shift indicator(shift torwer)先导阀 priority valve流量阀 flow valve重迭阀 overlap valve液力减速器控制阀 retarder control valve液力起步 fluid start零速起动 stall start液力变矩器锁止 converter lockup全液压自动换档系统 hydraulic automatic control system 电液式自动换档系统 electronic -hydraulic automatiec换档 shift升档 upshift降档 downshift动力换档 power shfit单向离合器换档 freewheel shfit人工换档 manual shfit自动换档 automaitc shfit抑制换档 inhibited shift超限换档 overrun shift强制换档 forced shift换档点 shift point叶片转位 blade angle shift换档滞后 shift hysteresis换档循环 shift schedule换档规律 process of power shift动力换档过程 timing换档定时 property of automatic shift换档品质 property of automatic shft换档元件 engaging element换档机构 gearshift操纵杆 control lever变速杆 stick shift(gear shift lever)（副变速器）变速杆 range selector变速叉 shifting fork (gear shift fork)分动箱控制杆 transfer gear shift fork变速踏板 gear shift pedal变速轨（拨叉道轨） shift rail直接变速 direct change(direct control)方向盘式变速 column shift (handle change) 按钮控制 finger-tip control槽导变速 gate change空档位置 neutral position直接驱动 direct drive高速档 top gear(high gear)低速档 bottom gear(low speed gear)第一档 first gear第二档 second gear超速档 overdirve gear经济档 economic gear倒档 reverse gear爬行档 creeper gear驱动特性 drive performance反拖特性 coast performance定输入扭矩特性 constant input torque performance全油门特性 full throttle performance寄生损失特性 no load (parasitic losses)performance 原始特性 primary characteristic响应特性 response characteristic吸收特性 absorption characteristic全特性 total external characteristic输入特性 characteristic of enhance输出特性 characteristic of exit力矩特性 torque factor(coefficient of moment)过载系数 overloading ratio变矩系数 torque ratio能容系数 capacity factorr几何相似 geometry similarity运动相似 kinematic similarity动力相似 dynamic similarity透穿性 transparency万向节和传动轴 universal joint and drive shaft万向节 universal joint非等速万向节 nonconstant velocity universal joint 等速万向节 constant velocity universal joint准等速万向节 near constant velocity universal joint 自承式万向节 self-supporting universal joint非自承式万各节 non self suporting universal joint 回转直径 swing diameter等速平面 constant velocity plane万向节夹角 true joint angle十字轴式万向节 cardan (hookes)universal joint万向节叉 yoke突缘叉 flange york滑动叉 slip yoke滑动节，伸缩节 slip joint花键轴叉 slip shaft yoke轴管叉（焊接叉） tube(weld yoke)十字轴 cross(spider)十字轴总成 cross assembly挠性元件总成 flexible universal joint球销式万向节 flexible member assembly双柱槽壳 housing球环 ball球头轴 ball head球头钉 button中心球和座 centering ball and seat球笼式万向节 rzeppa universal joint钟形壳 outer race星型套 inner race保持架 cage可轴向移动的球笼式万向节 plunging constant velocity joint 筒形壳 cylinder outer race柱形滚道星形套 inner race withcylinder ball grooves偏心保持架 non-concentric cage滚动花键球笼式万向节 ball spline rzeppa universal joint 外壳 outer housing内壳体 inner housing球叉式万向节 weiss universal joint球叉 ball yoke定心钢球 centering ball三球销万向节 tripod universal joint三柱槽壳 housing三销架 spider双联万向节 double cardan universal joint凸块式万向节 tracta universal joint凸块叉 fork yoke榫槽凸块 tongue and groove couplijng凹槽凸块 groove coupling传动轴 drive shaft(propeller shaft)传动轴系 drive line传动轴形式 drive shaft type两万向节滑动的传动轴 two -joint inboard slip ddiveshaft 两万向节外侧滑动传动轴 two joint ouboard slip drive shaft 单万向节传动轴 single joint coupling shaft组合式传动轴 unitized drive shaft传动轴减振器 drive shaft absorber传动轴中间轴承 drive shaft center bearing传动轴管焊接合件 weld drive shaft tube assembly传动轴特征长度 drive shaft length传动轴谐振噪声 resonant noise of rive shaft传动轴的临界转速 critical speed of drive shaft传动轴总成的平衡 balance of drive shaft assembly允许滑动量 slip相位角 phase angle传动轴安全圈 drive shaft safety strap驱动桥 drive axle(driving axle)类型 type断开式驱动桥 divided axle非独立悬架式驱动桥 rigid dirve axle独立悬架式驱动桥 independent suspension drive axle转向驱动桥 steering drive axle贯通式驱动桥 tandem axles“三速”贯通轴 "three-speed" tandem axles单驱动桥 single drive axle多桥驱动 multiaxle drive减速器 reducer主减速器 final drive单级主减速器 single reduction final drive双级主减速器 double reduction final drive前置式双级主减速器 front mounted double reduction final drive后置式双级主减速器 rear mounted double reduction final drive上置式双级主减速器 top mounted double reducton final drive行星齿轮式双级主减速器 planetary double reduction final drive贯通式主减速器 thru-drive双速主减速器 two speed final drive行星齿轮式双速主减速器 two speed planetary final drive双级双速主减速器 two speed double reduction final drive轮边减速器 wheel reductor(hub reductro)行星圆柱齿轮式轮边减速器 planetary wheel reductor行星锥齿轮式轮边减速器 differential geared wheel reductor(bevelepicyclick hub reductor)外啮合圆柱齿轮式轮边减速器 spur geared wheel reductor差速器 differential锥齿轮式差速器 bevel gear differential圆柱齿轮式差速器 spur gear differential防滑式差速器 limited -slip differential磨擦片式自锁差速器 multi-disc self -locking differential凸轮滑滑块自锁差速器 self-locking differential with side ring and radial cam plate自动离合式自锁差速器 automotive positive locking differential强制锁止式差速器 locking differential液压差速器 hydraulic differential轴间差速器 interaxial differential差速器壳 differential carrieer(case)主降速齿轮 final reduction gear驱动轴减速比 axle ratio总减速比 total reduction ratio主降速齿轮减速比 final reduction gear ratio双减速齿轮 double reduction gear差速器主齿轮轴 differential pinion-shaft差速器侧齿轮 differential side gear行星齿轮 spider gear(planetary pinion)螺旋锥齿轮 spiral bevel gear双曲面齿轮 hypoid gear格里林齿制 gleason tooth奥林康型齿制 oerlikon tooth锥齿轮齿数 number of teeth in bevel gears and hypoid gears锥齿轮齿宽 face width of tooth in bevel gears and hypoid gears 平面锥齿轮 plane bevel gear奥克托齿形 octoid form平顶锥齿轮 contrate gear齿面接触区 circular tooth contact齿侧间隙 backlash in circular tooth差速器十字轴 differential spider差速器锁止机构 differential locking -device差速器锁止系数 differential locking factor差速器壳轴承 carrier bearing桥壳 axle housing整体式桥壳 banjo housing可分式桥壳 trumpet-type axle housing组合式桥壳 unitized carrier-type axle housing对分式桥壳 split housing冲压焊接桥壳 press-welding axle housing钢管扩张桥壳 expanded tube axle housing锻压焊接桥壳 forge welding axle housing整体铸造式桥壳 cast rigid axle housing半轴 axle shaft全浮式半轴 full-floating axle shaft半浮式半轴 semi-floating axle shaft四分之三浮式半轴 three-quarter floating axle shaft 驱动桥最大附着扭矩 slip torque驱动桥额定桥荷能力 rating axle capactiy驱动桥减速比 driveaxle ratio驱动桥质量 drive axle mass单铰接式摆动轴 single-joint swing axle双铰接式摆动轴 double joint swig axle。

变速器外文文献翻译、中英文翻译、外文翻译

TRANSMISSIONEngine output speed is very high, the power and the maximum torque in certain areas of the speed. In order to exert the engine, you must have the best performance, to coordinate the speed of the engine and the actual speeds. Transmission in automobile driving process between the engine and wheels, in different ratios, through the shift in the engine can work under the condition of the best performance. The development trend of the transmission is more complex, more and more is also high automation degree, automatic transmission is the mainstream of the future.Car engines in certain speed can reach the best state, the output power of the bigger, fuel economy and better. Therefore, we hope in the best condition engine always work. But, in the use of the car to have different speed, the contradictions. This contradiction through the transmission to solve.Auto transmission function in a single sentence, is called the speed change, which reduced growth slowing or thickening twist. Why can increase twist, and slowing growth and to reduce twist? Put the power output unchanged, the engine power can be expressed as N = wT, w is turning, T is the angular torque. When N fixed, w and T is inversely proportional to the. So the growth will be reduced, slow increase twist. Auto transmission gear transmission is based on the principle of variable twist, each corresponding to different into gear transmission, in order to adapt to the different operating conditions.General manual transmission shaft set the input and output shaft, and say, another three axis reverse axis. Three main transmission shaft type is the speed of the input shaft structure, the speed of the engine, is also the output shaft speed is presented. By output shaft gear generated between different speeds. The gear is different with different ratio, also have different speed. Such as Zhen Zhou Nissan ZN6481W2G type SUV driver’s dynamic transmission, it is respectively: 1 ratio of 1:3.704 gears, 2.202 2:1, 3:1; 1.414 4 gears, - 5 (1): overdrive dependent.When the car started when the driver choose 1 files, dial 1 1/2 shift fork synchronizer backward joints and 1 shift gear lock on the output shaft, and the power input shaft, and the output shaft shift gears, 1 shift gear drive output shaft, output shaft will power to transmission (red arrows). The typical one shift gear ratio is 3:1, i.e. input shaft turn 3 laps, output shaft turn 1 lap.When the car growth drivers choose 2 files, dial 1 1/2 shift fork synchronizer and 1 separateness from 2 after mating locking output shaft gear and power transmission line, which is similar to the output shaft gear with 2, 1 files output shaft gear. The typical 2 shift gear ratio is 2.2:1, input, output shaft turning 2.2 pivot, 1-1 RPMincreases, torque shift.When gas growth drivers choose 3, dial 1 1/2 shift fork to synchronizer, and back to space three/four file synchronizer will move until 3 gear lock in the output shaft, make the power from the first shaft -- -- on the output shaft transmission gears, 3 through the output shaft gear shifting speed. The typical 3 ratio was 1.7:1, the input shaft turning circle, the output shaft 1.7 turn 1 ring, is further growth.When gas growth drivers choose 4 gears, fork will 3/4 file synchronizer from 3 gear directly with the input shaft driving gear engagement, power transmission directly from the input shaft to the output shaft, and the output shaft is 1:1 ratio and the input shaft speed. Due to the force, and the direct oart shift, the gear transmission efficiency ratio. Cars run most time in order to achieve the best directly file fuel economy.Shift to go into space, transmission in the transmission gears have locked in the output shaft, they cannot drive the output shaft rotation, no power output.General car manual transmission ratio main points above 1-4, usually designers to first identify the lowest (1) and (4) transmission, the ratio between after general distribution according to form. In addition, there is a reverse and overdrive, overdrive called 5 files.When the car to accelerate whether isolated car drivers choose more than 5, 5 gear transmission is typical 0.87:1, namely with big gear drive pinion gear turns, when active 0.87 lap, passive gear has turned over one lap.When the reverse in the opposite direction to the output shaft rotation. If a gear when reverse rotation, plus a gear will become a positive spin. Using this principle, will add a reverse gear do "medium", the direction of rotation axis, so has reversed a reverse axis. Reverse transmission shaft independent in housing, and parallel axis, when oart in gear and gear and oart output shaft gear, output shaft to will instead.Usually the reverse synchronizer is controlled by the jointing, so May 5 files and reverse position is in the same side. Due to the middle, reverse gear transmission is generally greater than 1 gear transmission ratio, twist, some cars met with forward instead of steep open up in reverse.From driving gear transmission is smooth; more is better, more adjacent gear shift between the transmission ratio, shift easy and smooth. But the gear transmission fault is more complex structure, big volume and light auto transmission is now commonly 4-5. At the same time, the transmission ratio is not an integer, but with the decimal point, this is not the whole number of meshing gears, two gear ratio is the euploid number will lead to two gear surface non-uniform wear, tooth surface quality of differences.Manual transmission and synchronizerManual transmission is one of the most common transmissions, referred to as MT. Its basic structure in a single sentence is a central axis, two input shaft, namely, the axial and axial oart, they constituted the transmission of the subject, and, of course, a reverse axis. Manual transmission gear transmission and manual, contain can in axial sliding gears, through different meshing gears to change gear of torsional purpose. The typical structure and principle of the manual transmission.Input shaft also says, it's in front of the spline shaft directly with clutch platen, thus the spline set by the engine relay of torque. The first shaft gear meshing gears, often with oart as input shaft, and the gear on oart will turn. Also called shaft, because even more solid shaft of gear. The output shaft, and the second shaft position have the drive shaft gear, may at any time and under the influence of the control devices and the corresponding oart gear, thus changing the speed and torque itself. The output shaft is associated with tail spline shaft torque transmission shaft, through to drive to gear reducer.Predictably, transmission gear drive forward path is: input shaft gear - oart gnaws gear - because the second shaft gear - corresponding gear. Pour on the axle gear can also control device, by moving axis in the strike, and the output shaft gear and oart gear, in the opposite direction.Most cars have five forward and reverse gear, each one has certain ratio, the majority of gear transmission more than 1, 4 gears transmission is 1, called directly, and ratio is less than 1 of article 5 gear shift accelerated called. The output axis gear in the mesh position, can accept power transmission.Due to the gearbox output shaft to input shaft and the speed of their gear rotating, transform a "synchronization problem". Two rotating speed different meshing gears forcibly inevitable impact and collision damage gear. Therefore, the old transmission shift to use "two feet on-off" method, accelerate in neutral position shift to stay for a while, in the space location on the door, in order to reduce gear speed. But this operation is more complex, difficult to grasp accurately. Therefore designers to create "synchronizer", through the synchronizer will make the meshing gears reach speed and smooth.Currently the synchronous transmission adopts is inertial synchronizer, it mainly consists of joints, synchronizer lock ring etc, it is characteristic of the friction effect on achieving synchronization. Mating, synchronizer and mating locking ring gear tooth circle have chamfering (locking horns), the synchronizer lock ring inside surface of gear engagement ring and the friction surface contact. The lock horns with cone when designing the proper choice, has been made to the surface friction of meshinggears with gear synchronous, also can rapid produces a locking function, prevent the synchronous before meshing gears. When synchronous lock ring of gear engagement with surface contact surface, the outer circle in friction torque under the action of gear speed rapid decrease (increase) or to synchronous speed equal, both locking ring spun concurrent, relative to lock ring gear synchronous speed is zero, thus inertia moment also disappear, then in force, driven by the junction of unimpeded with synchronous lock ring gear engagement, and further to engagement with the engagement ring gear tooth and complete shift process变速器发动机的输出转速非常高，最大功率及最大扭矩在一定的转速区出现。

汽车手动变速箱外文翻译

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汽车变速器设计(外文翻译)我们知道，汽车发动机在一定的转速下能够达到最好的状态，此时发出的功率比较大，燃油经济性也比较好。

因此，我们希望发动机总是在最好的状态下工作。

但是，汽车在使用的时候需要有不同的速度，这样就产生了矛盾。

这个矛盾要通过变速器来解决。

汽车变速器的作用用一句话概括，就叫做变速变扭，即增速减扭或减速增扭。

为什么减速可以增扭，而增速又要减扭呢？设发动机输出的功率不变，功率可以表示为 N = wT，其中 w 是转动的角速度，T 是扭距。

当 N 固定的时候，w 与 T 是成反比的。

所以增速必减扭，减速必增扭。

汽车变速器齿轮传动就根据变速变扭的原理，分成各个档位对应不同的传动比，以适应不同的运行状况。

一般的手动变速器内设置输入轴、中间轴和输出轴，又称三轴式，另外还有倒档轴。

三轴式是变速器的主体结构，输入轴的转速也就是发动机的转速，输出轴转速则是中间轴与输出轴之间不同齿轮啮合所产生的转速。

不同的齿轮啮合就有不同的传动比，也就有了不同的转速。

例如日产 ZN6481W2G 型 SUV 车手动变速器，它的传动比分别是：1 档 3.704:１；2 档 2.202:1；3 档1.414:1；4 档 1:1；5 档（超速档）0.802:1。

当汽车启动司机选择 1 档时，拨叉将 1/2 档同步器向后接合 1 档齿轮并将它锁定输出轴上，动力经输入轴、中间轴和输出轴上的 1 档齿轮，1 档齿轮带动输出轴，输出轴将动力传递到传动轴上。

典型 1 档变速齿轮传动比是3:1,也就是说输入轴转 3 圈，输出轴转 1 圈。

当汽车增速司机选择 2 档时，拨叉将 1/2 档同步器与 1 档分离后接合 2 档齿轮并锁定输出轴上，动力传递路线相似，所不同的是输出轴上的 1 档齿轮换成 2 档齿轮带动输出轴。

典型 2 档变速齿轮传动比是 2.2:1，输入轴转2.2 圈，输出轴转 1 圈，比 1 档转速增加，扭矩降低。

当汽车加油增速司机选择 3 档时，拨叉使 1/2 档同步器回到空档位置，又使 3/4 档同步器移动直至将 3 档齿轮锁定在输出轴上，使动力可以从轴入轴—中间轴—输出轴上的 3 档变速齿轮，通过 3 档变速齿轮带动输出轴。

典型 3 档传动比是 1.7:1，输入轴转 1.7 圈，输出轴转 1 圈，是进一步的增速。

当汽车加油增速司机选择 4 档时，拨叉将 3/4 档同步器脱离 3 档齿轮直接与输入轴主动齿轮接合，动力直接从输入轴传递到输出轴，此时传动1:1，即输出轴与输入轴转速一样。

由于动力不经中间轴，又称直接档，该档传动比的传动效率最高。

汽车多数运行时间都用直接档以达到最好的燃油经济性。

换档时要先进入空档，变速器处于空档时变速齿轮没有锁定在输出轴上，它们不能带动输出轴转动，没有动力输出。

一般汽车手动变速器传动比主要分上述 1－4 档，通常设计者首先确定最低（1 档）与最高（4 档）传动比后，中间各档传动比一般按等比级数分配。

另外，还有倒档和超速档，超速档又称为 5 档。

当汽车要加速超过同向汽车时司机选择 5 档，典型 5 档传动比0.87:1，也就是用大齿轮带动小齿轮，当主动齿轮转 0.87 圈时，被动齿轮已经转完 1 圈了。

倒档时输出轴要向相反方向旋转。

如果一对齿轮啮合时大家反向旋转，中间加上一个齿轮就会变成同向旋转。

利用这个原理，倒档就要添加一个齿轮做“媒介”，将轴的转动方向调转，因此就有了一根倒档轴。

倒档轴独立装在变速器壳内，与中间轴平行，当轴上齿轮分别与中间轴齿轮和输出轴齿轮啮合时，输出轴转向会相反。

通常倒档用的同步器也控制 5 档的接合，所以5档与倒档位置是在同一侧的。

由于有中间齿轮，一般变速器倒档传动比大于 1 档传动比，增扭大，有些汽车遇到陡坡用前进档上不去就用倒档开上去。

从驾驶平顺性考虑，变速器档位越多越好，档位多相邻档间的传动比的比值变化小，换档容易而且平顺。

但档位多的缺点就是变速器构造复杂，体积大，现在轻型汽车变速器一般是 4－5 档。

同时，变速器传动比都不是整数，而是都带小数点的，这是因为啮合齿轮的齿数不是整倍数所致，两齿轮齿数是整倍数就会导致两齿轮啮合面磨损不均匀，使得轮齿表面质量产生较大的差异。

手动变速器与同步器手动变速器是最常见的变速器，简称 MT。

它的基本构造用一句话概括，就是两轴一中轴，即指输入轴、轴出轴和中间轴，它们构成了变速器的主体，当然还有一根倒档轴。

手动变速器又称手动齿轮式变速器，含有可以在轴向滑动的齿轮，通过不同齿轮的啮合达到变速变扭目的。

典型的手动变速器结构及原理如下。

输入轴也称第一轴，它的前端花键直接与离合器从动盘的花键套配合，从而传递由发动机过来的扭矩。

第一轴上的齿轮与中间轴齿轮常啮合，只要轴入轴一转，中间轴及其上的齿轮也随之转动。

中间轴也称副轴，轴上固连多个大小不等的齿轮。

输出轴又称第二轴，轴上套有各前进档齿轮，可随时在操纵装置的作用下与中间轴的对应齿轮啮合，从而改变本身的转速及扭矩。

输出轴的尾端有花键与传动轴相联，通过传动轴将扭矩传送到驱动桥减速器。

由此可知，变速器前进档位的驱动路径是：输入轴常啮齿轮－中间轴常啮齿轮－中间轴对应齿轮－第二轴对应齿轮。

倒车轴上的齿轮也可以由操纵装置拨动，在轴上移动，与中间轴齿轮和输出轴齿轮啮合,以相反的旋转方向输出。

多数汽车都有 5 个前进档和一个倒档，每个档位有一定的传动比，多数档位传动比大于 1，第 4 档传动比为 1，称为直接档，而传动比小于 1 的第 5 档称为加速档。

空档时输出轴的齿轮处于非啮合位置，无法接受动力传输。

由于变速器输入轴与输出轴以各自的速度旋转，变换档位时合存在一个"同步 "问题。

两个旋转速度不一样齿轮强行啮合必然会发生冲击碰撞，损坏齿轮。

因此，旧式变速器的换档要采用"两脚离合"的方式，升档在空档位置停留片刻，减档要在空档位置加油门，以减少齿轮的转速差。

但这个操作比较复杂，难以掌握精确。

因此设计师创造出"同步器"，通过同步器使将要啮合的齿轮达到一致的转速而顺利啮合。

目前全同步式变速器上采用的是惯性同步器，它主要由接合套、同步锁环等组成，它的特点是依靠摩擦作用实现同步。

接合套、同步锁环和待接合齿轮的齿圈上均有倒角（锁止角），同步锁环的内锥面与待接合齿轮齿圈外锥面接触产生摩擦。

锁止角与锥面在设计时已作了适当选择，锥面摩擦使得待啮合的齿套与齿圈迅速同步，同时又会产生一种锁止作用，防止齿轮在同步前进行啮合。

当同步锁环内锥面与待接合齿轮齿圈外锥面接触后，在摩擦力矩的作用下齿轮转速迅速降低（或升高）到与同步锁环转速相等，两者同步旋转，齿轮相对于同步锁环的转速为零，因而惯性力矩也同时消失，这时在作用力的推动下，接合套不受阻碍地与同步锁环齿圈接合，并进一步与待接合齿轮的齿圈接合而完成换档过程。

自动变速器自动变速器的选挡杆相当于手动变速器的变速杆，一般有以下几个挡位：P(停车)、R(倒挡)、N(空挡)、D(前进)、S(or2，即为 2 速挡)、L(or1，即为1 速挡)。

这几个挡位的正确使用对于驾驶自动变速器汽车的人来说尤其重要，下面就让我们一起来熟悉一下自动变速器各挡位的使用要领。

●P(停车挡)的使用发动机运转时只要选挡杆在行驶位置上，自动变速器汽车就很容易地行走。

而停放时，选挡杆必须扳入 P 位，从而通过变速器内部的停车制动装置将输出轴锁住，并拉紧手制动，防止汽车移动。

●R(倒挡)的使用R 位为倒挡，使用中要切记，自动变速器汽车不像手动变速器汽车那样能够使用半联动，故在倒车时要特别注意加速踏板的控制。

●N(空挡)的使用N 位相当于空挡，可在起动时或拖车时使用。

在等待信号或堵车时常常将选挡杆保持在 D 位，同时踩下制动。

若时间很短，这样做是允许的，但若停止时间长时最好换入 N 位，并拉紧手制动。

因为选挡杆在行驶位置上，自动变速器汽车一般都有微弱的行驶趋势，长时间踩住制动等于强行制止这种趋势，使得变速器油温升高，油液容易变质。

尤其在空调器工作、发动机怠速较高的情况下更为不利。

有些驾驶员为了节油，在高速行驶或下坡时将选挡杆扳到 N 位滑行，这很容易烧坏变速器，因为这时变速器输出轴转速很高，而发动机却在怠速运转，油泵供油不足，润滑状况恶化，易烧坏变速器。

●D(前进挡)的使用正常行驶时将选挡杆放在 D 位，汽车可在 1～4 挡(或 3 挡)之间自动换挡。

D 位是最常用的行驶位置。

需要掌握的是：由于自动变速器是根据油门大小与车速高低来确定挡位的，所以加速踏板操作方法不同，换挡时的车速也不相同。

如果起步时迅速将加速踏板踩下，升挡晚，加速能力强，到一定车速后，再将加速踏板很快松开，汽车就能立即升挡，这样发动机噪声小，舒适性好。

D 位的另一个特点是强制低挡，便于高速时超车，在 D 位行驶中迅速将加速踏板踩到底，接通强制低挡开关就能自动减挡，汽车很快加速，超车之后松开加速踏板又可自动升挡。

●S、L 位低挡的使用自动变速器在 S 位或 L 位上处于低挡范围，可以在坡道等情况下使用。

下坡时换入 S 位或 L 位能充分利用发动机制动，避免车轮制动器过热，导致制动效能下降。

但是从 D 位换入 S 位或 L 位时，车速不能高于相应的升挡车速，否则发动机会强烈振动，使变速器油温急剧上升，甚至会损坏变速器。

另外在雨雾天气时，若路面附着条件差，可以换入 S 位或 L 位，固定在某一低挡行驶，不要使用能自动换挡的位置，以免汽车打滑。

同时必须牢记，打滑时可将选挡杆推入 N 位，切断发动机的动力，以保证行车安全。

原文：原文：Transmission designAs we all know,automobile engine to a certain speed can be achieved under the best conditions, when compared issued by the power, fuel economy is relatively good. Therefore, we hope that the engine is always in the best of conditions to work under. However, the use of motor vehicles need to have different speeds, thus creating a conflict. Transmission through this conflict to resolve.Automotive Transmission role sum up in one sentence, called variable speed twisting, twisting or slow down the growth rate by increasing torsional. Why can slow down by twisting, and the growthrate but also by twisting? For the same engine power output, power can be expressed as N = wT, where w is the angular velocity of rotation, and T is the torque. When N fixed, w and T is inversely proportionalto the. Therefore, the growth rate will reduce twisting, twisting slowdown will increase. Automotive Transmission speed gear based onthe principle of variable twisted into various stalls of different transmission ratio corresponding to adapt to different operational conditions.General to set up a manual gearbox input shaft, intermediate shaft and output shaft, also known as the three-axis, as well as the reverse gear shaft. Three-axis is the main transmission structure, input shaft speed is the speed of the engine, the output shaft speed is theintermediate shaft and output shaft gear meshing between differentfrom the speed. Different gears are different transmission ratio, and will have a different speed. For example, the Nissan ZN6481W2G SUV car manual transmission, its transmission ratio are: 1 File 3.704:1; 2stalls 2.202:1;3 stalls 1.414:1; 4 stalls 1:1; 5 stalls (speeding file) 0.802: 1.When drivers choose a launch vehicle stalls, Plectrum will be 1 / 2 file synchronization engagement with a back stall gear and output shaft lock it, the power input shaft, intermediate shaft and output shaft gear of a stall, a stall the output shaft gear driven, and the output shaft power will be transmitted to the drive shaft . 1 shifting speed gear transmission ratio is 3:1, that is to say three laps to the input shaft and output shaft to a circle.When the growth rate of car drivers choose two stalls, Plectrum will be 1 / 2-file synchronization and file a joint separation after 2 stall and lock the output shaft gear, power transmission line similar, the difference is that the output shaft gear of a stall 2 stall replaced by the output shaft gear driven. Band 2 speed gear transmission ratio is 2.2 :1, 2.2 laps to the input shaft and output shaft to a circle than a stall speed increase, lower torque.When refueling vehicle drivers growth stalls option 3, Plectrumto 1 / 2 back to the free file-synchronization position, and also allows the 3 / 4 file synchronization Mobile stall until 3 in the output shaft gear lock, power can be into the shaft axis intermediate shaft - the output shaft of the three stalls speed gear, led through three stalls speed gear output shaft. 3 stalls typical transmission ratio is 1.7:1, 1.7 laps to the input shaft and output shaft to acircle is further growth.When car drivers Option 4 refueling growth stalls, Plectrumwill be 3 / 4 from the 3-file synchronization stall gear directly with the input shaft gear joint initiative, and power transmission directly from the input shaft to the output shaft, the transmission ratio at1:1, that the input shaft and output shaft speed the same. The driving force without intermediate shaft, also known as direct file, the file transmission than the maximum transmission efficiency. Most cars run-time files are used directly to achieve the best fuel economy.Shift into the first interval when, in a free transmission when the speed gear output shaft is not locked in, they can not rotate the output shaft driven, not power output.General automotive manual transmission than the main 1-4 stalls, usually the first designers to determine the minimum (one stall) and maximum (4 files) transmission ratio, the middle stall drive by geometric progression than the general distribution. In addition, Alsohave a reverse and overdrive, overdrive is also known as the five stalls.When the car to accelerate to more than car drivers with the choice of five stalls, and a typical five-transmission ratio is 0.87:1, which is driven by a pinion gear, the gear when the initiative to 0.87 zone, passive gear have been transferred to a circle of the End.When the reverse gear output shaft to rotate in opposite directions. If one pair of meshing gears when we reverse rotation,with a middle gear, it will become the same to the rotation. Use ofthis principle, reverse will add a gear do "media interface", modulate the axis rotation direction, therefore there is a bone in the reverse gear shaft.Independent in the reverse gear shaft gearbox, parallel to the intermediate shaft, when the shaft gear respectively with intermediate shaft gear and the output shaft gear meshing, the output shaft will turn to instead.The reverse usually used for the synchronization control also joins five stalls, reverse and 5 position in the same side. As amiddle gear, general transmission shifting gear ratio is greater than1 transmission ratio, increasing twist, some car encounter to thesteep slope with the forward couldn't get on with the reverse open up.Ride from the driver of the considerations, better transmission stall, stall adjacent stall more than the transmission changes theratio of small, and easy to shift smoothly. However, the shortcomingsof the stalls is more transmission structure is complicated, bulky,light vehicle transmission is generally 4-5 stalls. At the same time, transmission ratio is not integral, but with all of the decimal point, it is because of the gear teeth meshing is not caused by the whole multiples of two gear teeth can lead to the whole multiples of two meshing gears of uneven wear, making the tooth surface quality have a greater difference.Manual transmission and synchronizerManual transmission is the most common transmission, or MT. Its basic structure sum up in one sentence, is a two-axle shaft, whereinput shaft, the shaft axis and intermediate shaft, which constitutethe main body of the transmission and, Of course also have a reverse axis. Manual transmission known as manual gear transmission, which can be in the axial sliding gears, the gears meshing different variable speed reached twisting purpose. Typical manual transmission structure and principles are as follows.Input shaft also said that the first axis, and its front-end Spline driven directly with the clutch disc sets with the Spline, bythe transfer of torque from the engine. The first axis of the intermediate shaft and gears meshing gears often, as long as the shaft axis to a turn, the intermediate shaft and gear also will be rotating.Vice also said intermediate shaft axis, the axis-even more than the size gear. Also known as the second output shaft axis, the axis of various sets of gear stall progress can be manipulated at any time in the role of the device and the corresponding intermediate shaft gear meshing, thus changing its speed and torque. With the end of the output shaft spline associated with the drive shaft through the drive shaft torque transmitted to the drive axle reducer.Thus, progress stalls drive transmission path is: input shaft gear often rodents often rodents intermediate shaft gear - corresponding intermediate shaft gear - the second axis corresponding gear. Reversing the gear shaft can be manipulated by the device pick in the axis movement, and the intermediate shaft and output shaft gear meshing gears, to the contrary to the direction of rotation output.Most cars have a five forward gears and one reverse gear, a certain degree of each stall transmission ratio, the majority ofstalls transmission ratio greater than 1, 4 file transmission ratio of 1, known as direct stalls, and transmission ratio is less than 1 No. 5 stall called accelerated stall. Free at the output shaft gear in a position of non-engagement, unacceptable power transmission.The transmission input shaft and output shaft rotational speed to their own, transform a stall when there is a "synchronous". Two different rotational speed gear meshing force will impact thecollision occurred, damage gear. Therefore, the old transmission shift to a "feet-off" approach, or stall on the location of the free stayfor a while by stalls in the free position refueling doors, in order to reduce the speed differential gear. However, this operation is relatively more complicated and difficult to grasp accurate. So designers create a "synchronized," and allows synchronization through the meshing of gears to be consistent speed and smooth meshing.At present Synchronous Transmission is based on the synchronization of inertia, mainly from joint sets, synchronous lock ring, and so on, it is characterized by friction on the role of synchronization. Splice sets Genlock engagement ring gear and the ring gear when it had Chamfer (Lock angle), Genlock within the cone ring gear engagement with the question of cone ring gear contact friction. Lock and cone angle has been made in the design of an appropriate choice to be made friction cone of the teeth meshing with the ring gear quickly sets pace at the same time will have a Lock role and to prevent the gears meshing in sync before. When synchronization lock cone ring gear engagement with the question of cone ring gear after contact in the effects of friction torque gear speed quickly lower (or higher) with the same speed synchronous lock ring, the two synchronous rotation of the gear Genlock Central zero speed, thus moment ofinertia also disappear, then in force under the impetus of engagementsets unhindered and synchronization lock ring gear engagement, and further engagement with the question of gear engagement and the completion Gear Shift Process.The automatic gearboxThe automatic gearbox chooses to block the pole the equal to moving the stick shift of the gearbox, having generally below several blocks:P( parking), R( pour to block), N( get empty to block), D( go forward), S( or2, namely for 2 block soon), L.( or1, namely for 1 block soon)This several an usage for blocking a right usages coming driver the automatic gearbox is automotive of person to say particularly important, underneath let us very much familiar with once automatic gearbox eachly blockings main theme.The usage of the P ( the parking blocks)The launches the luck turns as long as choose to block the pole in driving the position, automatic gearbox car run about veryeasily.But park, choose to block the pole must pull into of P, from but pass the internal parking system in gearbox moves the device will output the stalk lock lives, combining to tense the hand system move, preventing the car ambulation.The usage of the R( pour to block)R a control for is pouring blocking, using inside wantingslicing recording, automatic gearbox car unlike moving gearbox car so can using half moving, so while reversing the car wanting special attention accelerating pedal.The usage of the N( get empty to block)The N is equal to get empty to block, can while starting or hour of trailer usage.At wait for the signal or block up the car will often often choose to block the pole keeps in the of D, trampling at the same time the next system move.If time is very short, do like this is an admission of, but if stop the time long time had better change into of N, combine to tense the hand system moves.Because choose to block the pole in driving the position, the automatic gearbox car has generally and all to drive the trend faintly, long hours trample the system move same as a deterrent this kind of trend, make gearbox oil gone up, the oil liquid changes in character easily.Particularly in the air condition machine work, launch the soon higher circumstance in machine bottom more disadvantageous.Some pilots for the sake of stanza oil, at made good time or go down slope will choose to block the pole pull the of N skids, this burn the bad gearbox very easily, launching the machine to revolves soon in the however because the gearbox outputs at this time the stalk turns soon very high,, the oil pump provides the oil shortage, lubricating the condition worsen, burn theThe usage of the D( go forward to block)Will choose to block when is normal to drive the pole put in the of D, car can at 1 ～ 4 block( or 3 block) its change to block automatically.The of D drives the position most in common usely.What demand control is:Because the automatic gearbox is soon high and low with car to come to make sure to block according to the acceleratorsize a, so accelerate the pedal operation method is different,changing to block the hour of the car is soon too not same alike.If start hour quick accelerate the pedal tramples the bottom, rising to block the night, accelerating the ability is strong, arriving certain car soon behind, then will accelerate the pedal loosen to open very quickly, car can rise to block immediately, launch like this the machine voice is small, comfortable good.The another characteristics of the D is a compulsory low blocking, easy to high speed the hour overtakes a car, will accelerate quickly in of D drove the pedal trample after all, connect the compulsory low fend off the pass and then can reduce to block automatically, the car accelerates very quickly, after overtaking acar loosen to open the pedal of acceleration to can rise to block automatically again.The usage of the S, of L low the usage that blockThe automatic gearbox in in is placed in the low blocking the scope on of S or of Ls, can usage under an etc. circumstance.It change to can make use of to launch well into of S or of Ls the mechanism move, avoiding the car wheel system move the machine over hot, causethe system move the effect descent while going down slope.But change into from the of D of S or of L, car soon can't higher than rise to block the car homologously soon, otherwise strong vibration in opportunity to launch, make gearbox oil hoicked, even will damage the gearbox.The is another at rain fog weather hour, if the road adheres to the term bad, can change into a position for or of L, fixing at somely first lowly blocking driving, doing not use can automatically changing blocking, in order to prevent the car beats slippery.Must keep firmlyin mind at the same time, beat the slippery hour can will choose to block the pole pushes into a motive for, cutting off launching machine, toing guarantee a car the safety.。