1.2.4 船舶柴油机润滑系统

1.2.4 船舶柴油机润滑系统

1. Lubrication for the main reduction gears used with diesel engines is usually supplied by ____.

A.oil from the main engine sump

B.an independent(独立的)lube oil system

C.the stem beating head tank

D.the stern bearing(艉轴承)sump tank

注在内燃机船上，减速齿轮箱的滑油系统与主机的滑油系统是相互独立的，以避免发动机产生的污染物损害减速齿轮。B

By which of the following types of lubricating oil systems are lubricating oil systems for diesel engine journal bearing usually lubricating ?

A.Splash

B. Gravity

C. Pressure

D. Bypass

注在滑油系统中柴油机曲轴轴颈轴承（主轴承）为压力润滑。C

* 3. Mechanical lubricators for diesel engine cylinders are usually small reciprocating pumps which are ____.

A.operated manually once an hour

B.operated until the engine has started

C.placed into operation only at maximum load

D.adjustable to meet lubrication requirements

注柴油机气缸注油器一般都是小型的往复式泵，该泵能调节以满足不同的润滑要求。D

4. The lube oil cooler is located after the lube oil filter in order for ____.

A.the filter to operate more efficiently

B.the lube oil cooler to be bypassed

C.positive lube oil pump suction to be assured

D.galvanic action(电流作用)in the cooler to be

注滑油冷却器位于油滤器之后，主要是为了使滤器运行效率更高（温度较高时易过滤净化）。A

5.Why do we use cylinder oil?

A.To neutralize the sulphur and get a lubricating oil film between piston rings and liner

B.To get a lubricating oil film between piston rings and liner

C.To neutralize the sulphur in the fuel

D.To avoid blow-by

注汽缸油是用来中和酸和在活塞环和气缸之间形成油膜润滑A

6. In a pressure type lubricating system,the lube oil service pump normally takes suction from the sump tank and discharge directly to the ______.

A.lube oil cooler

B.main thrust bearing

C.gravity feed tank

D.lube oil heater

注在压力润滑系统中，日用滑油泵通常从滑油储存柜吸进并且直接供给滑油冷却器。A

7.The common method of applying oil to the cylinder walls is by means of small pump assembled in units,known as _______.

A.mechanical lubricator

B.forced feed system

C.lubrication function

D.bearing lubrication

注通过小的泵把滑油提供给气缸壁的方式叫机械润滑。A

8.Each of the engine cylinders is lubricated from a lubricator,driven by _____.

A.a separated motor

B.the engine’s piston

C.the engine’s camshaft

D.a turbine

注驱动每个气缸滑油注射器的是凸轮轴C

9.The lube oil in the bearings is drawn from a ____，usually located in the bedplate

A.tank

B.sump

C.vessel

D.bottle

注轴承的润滑油从油底壳吸入，油底壳一般位于机座内，B

10.The oil is drawn from a drain tank through ____,one of a pair of pumps, into one of fine filters.

A.a strain tank

B.a head tank

C.a service tank

D.a strainer

注滑油从泄油柜吸入，前后经过一个粗滤器、一台油泵、一个细滤器等。D 11.The cross-head pin bearings are white metal lined shells lubricated by means of ____.

A.low pressure pumps

B.centrifugal pumps

C.high pressure pumps

D.mechanical compressors

注十字头销轴承有白合金衬里，并通过高压油泵来润滑。C

12.The lubricating system for the cylinder walls is different from the bearings in that the oil for former one is supplied in ____ while that for latter one is ____.

A.sufficient quantity; measured

B.measured quantity; sufficient