节气门体介绍

* option
** Reserve for EOBD
2
Source: GS/VSA 6402e
CAN Diagnosis lamp Diagnosis interface Immobilizer
Accelerator pedal module
节气门体 1. 电子节气门体(Electronic throttle body)
2016/3/21
上 海 汽 车集 团 股份 有 限公司 技 术 中心
SAIC MOTOR Technical Center
4
节气门体
•外形及内部结构
5 of
2016/3/21
上 海 汽 车集 团 股份 有 限公司 技 术 中心
SAIC MOTOR Technical Center
5
节气门体
6 of
•工作原理：电子节气门是电子节气门控制系统的一个关键部件，它一方面执行来自发动机ECU的指令，调 节节气门开度来控制发动机的进气量，从而实现控制发动机的负荷输出，同时可以输出反映节气门开度位 置的信号，供控制系统监控节气门工作状况。 电子节气门由节气门体、驱动电机和节气门位置传感器等构成，来自发动机ECU的指令使驱动电机动 作，通过传动机构使节气门板转动，保证发动机工作所需的节气门开度。节气门位置传感器由两个电位器 组成，节气门开度变化时，电阻值发生变化，输出的电压信号随之变化，与电子油门踏板位置传感器信号 一起，输入到发动机ECU，经计算后，输出驱动电机控制信号，从而控制发动机节气门开度。 同发动机控制系统一起，电子节气门配合工作，可以实现：发动机怠速控制，车辆巡航控制， Limp home控制，自动变速箱控制，车身电子稳定控制（ESP）等功能。 Working principle: electronic throttle is electronic throttle control system of one of the key parts, on the one hand, the execution of the instruction from the engine ECU, adjust the opening of throttle to control the engine into the air, so as to realize control of the load on the engine output, and can reflect the position of the throttle opening signal output, working condition monitoring throttle for control system. Electronic throttle by throttle body, drive motor, and throttle position sensor, etc, from the engine ECU instructions that drive motor movement, through the drive mechanism to rotate the door plank of solar terms, to ensure that the engine for the throttle opening. Throttle position sensor is composed of two potentiometer, change the throttle opening, and the resistance value changes, the output voltage signal changes, together with the electronic accelerator pedal position sensor signal, the input to the engine ECU, after calculation, output drive motor control signal, so as to control the engine throttle opening. Together with the engine control system, electronic throttle with work, can be achieved: the engine idle speed control, vehicle cruise 3 of (ESP), etc control, Limp home control, automatic transmission control, automobile body electronic stability control
Intake manifold sensor Throttle device (ETC)
Air mass Electronic control unit
Delivery module with low pressure pump
Camshaft phaser: intake and/or exhaust phasing
节气门体
节气门体在汽油机控制系统中的作用 汽油机的工作是将燃油和空气充分有效地按一定比例混合，通过定时点火燃烧爆炸， 然后将爆炸产生的能量通过曲轴向外输送，怎样才能根据不断变化的需求去组织燃烧，达到 最佳的空气燃油比例？节气门体起到了一个重要的作用。 首先根据来自油门踏板的位置提出了对发动机的扭矩需求，然后ECU根据这个需求换算 成以节气门体的开度要求为表现形式的空气进气量的要求；最后配之以为达到最佳燃烧效果 的燃油供油量，达到最佳的动力性、经济性和排放。
2016/3/21
上 海 汽 车集 团 股份 有 限公司 技 术 中心
SAIC MOTOR Technical Center
6
节气门体
Biblioteka Baidu
7 of
2016/3/21
上 海 汽 车集 团 股份 有 限公司 技 术 中心
SAIC MOTOR Technical Center
The role of throttle body in gasoline engine control system Gasoline engine's job is to fuel and air mixed in certain proportion, efficiently by timing ignition burning explosion, and then send the blast energy through the crankshaft to the outside, how can according to the changing needs to organize the combustion, best air fuel ratio? Throttle body plays a important role. First of all, according to the position of the accelerator pedal is put forward on the engine torque requirements, then converted to ECU according to the needs to the opening of throttle body demands of air volume in the form of; The final match of the thought to achieve the best effect of combustion of fuel oil, to achieve the best performance, fuel economy and emissions 1 of
2016/3/21
上 海 汽 车集 团 股份 有 限公司 技 术 中心
SAIC MOTOR Technical Center
3
节气门体
直流电机在驱动电流作用下旋转一定角度，通过齿轮传动机构，将直流电机轴的运动 传递给节气门轴，节气门轴带动节气门旋转到所需角度，改变进气通道的截面积，从而控制 发动机的进气流量。同时，由于节气门轴的转动，改变电位计的工作位置，电位计输出的信 号发生变化，发动机控制单元根据信号值可确定节气门的具体开度位置反馈，从而精确微调 其位置； 电位计为两个反向信号计组成，一个反映节气门的正向开度位置，另一个反映节气门的 反向开度位置，比较两个信号计的信号值可相互检查其工作状态，作为判断是否有失效的一 个依据。
Dc motor rotation Angle, under the action of a drive current through a gear transmission mechanism, transfer the motion of the dc motor shaft to the throttle shaft, throttle shaft drive the throttle to the required level, changing the cross-sectional area of inlet channel, to control the inlet flow of the engine. At the same time, because of the rotation of the throttle shaft, change the working position potentiometer, potentiometer output signal changes, the engine control unit can be set according to the signal value of the opening of the throttle on the specific position feedback, thus precise finetuning its position; Potentiometer to two reverse signals of meter, a positive reflect the throttle opening position, another reflection of the opening of the throttle reverse position, compare the two signals of value can check the working state of each other, 4 of as a basis for judging whether there is a failure.
上 海 汽 车集 团 股份 有 限公司 技 术 中心
SAIC MOTOR Technical Center
节气门体
系统原理图(System principle)
Carbon canister Air mass meter with Intake air temperature Canister purge valve Fuel rail/ Injector Camshaft phaser* Phase Oxygen sensor senor Pre catalyst* Knock sensor EGR-valve* Speed sensor Main catalyst Temp. sensor Oxygen Sensor**
上 海 汽 车集 团 股份 有 限公司 技 术 中心
SAIC MOTOR Technical Center
2 of
ETC EOBD RLFS
2016/3/21
Electronic Throttle Control European On-Board Diagnosis System Returnless Fuel Supply System