汽车专业英语PPT课件 Chapter 3.1-3.4.pdf

Chapter3PowerTrain

3.1Clutches

3.2ManuelTransmission

3.3PropellerShaftsandUniversal

Joints

3.4FinalDrive,DifferentialandAxle

Shaft

3.1Clutches

NewWords

flywheel[flaiwi:l]n.飞轮

spring[spriŋ]n.弹簧

operate[ɔpəreit]vt.操作，控制，使运行

n.（机械）结构，机械

mechanism[mekənizəm]

装置

transmission[trænzmi∫ən]n.变速器

torque[tɔ:k]n.扭转力；转矩

clutch[klʌt∫]n.离合器

pedal[pedl]n.踏板

assembly[əsembli]n.装配；集会

pressureplate压盘

Theclutchwhichincludestheflywheel,clutchdisc,

pressureplate,springs,pressureplatecoverand

thelinkagenecessarytooperatetheclutchisa

rotatingmechanismbetweentheengineandthe

transmission.Itoperatesthroughfrictionwhich

comesfromcontactbetweentheparts.Thatisthe

reasonwhytheclutchiscalledafrictionmechanism.

Afterengagement,theclutchmustcontinueto

transmitalltheenginetorquetothetransmission

dependingonthefrictionwithoutslippage.The

clutchisalsousedtodisengagetheenginefromthe

drivetrainwheneverthegearsinthetransmission

arebeingshiftedfromonegearratiotoanother.

Tostarttheengineorshiftthegears,thedriverhasto

depresstheclutchpedalwiththepurposeof

disengagementthetransmissionfromtheengine.At

thattime,thedrivenmembersconnectedtothe

transmissioninputshaftareeitherstationaryor

rotatingataspeedthatisslowerorfasterthanthe

drivingmembersconnectedtotheenginecrankshaft.

Thereisnosp