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1、原文:CHASSIS1.clutchTheengineproducesthepowertodrivethevehicle.Thedrivelineordrivetraintransferthepoweroftheenginetothewheels.Thedrivetrainconsistsofthepartsfromthebackoftheflywheeltothewheels.Thesepartsincludetheclutch,thetransmission,thedriveshaft,andthefi
2、naldriveassembly.Theclutchwhichincludestheflywheel,clutchdisc,pressureplate,springs,pressureplatecoverandthelinkagenecessarytooperatetheclutchisarotatingmechanismbetweentheengineandthetransmission.Itoperatesthroughfrictionwhichcomesfromcontactbetweenthepar
3、ts.Thatisthereasonwhytheclutchiscalledafrictionmechanism.Afterengagement,theclutchmustcontinuetotransmitallenginetorquetotransmissiondependingonthefrictionwithoutslippage•Theclutchisalsousedtodisengagetheenginefromthedrivetrainwheneverthegearsinthetransmis
4、sionarebeingshiftedfromgearratiotoanother.Tostarttheengineorshiftthegears,thedriverhastodepresstheclutchpedalwiththepurposeofdisengagementthetransmissionfromtheengine.Atthattime,thedrivenmembersconnectedtothetransmissioninputshaftareeitherstationaryorrotat
5、ingataspeedthatissloweroffasterthanthedrivingmembersconnectedtoenginecrankshaft.Thereisnospringpressureontheclutchassemblyparts.Sothereisnofrictionbetweenthedrivingmembersanddrivenmembers.Asthedriverletsloosetheclutchpedal,springpressureincreaseontheclutch
6、parts.Frictionbetweenthepartsalsoincreases.Thepressureexertedbythespringsonthedrivenmembersiscontrolledbythedriverthroughtheclutchpedalandlinkage.Thepositiveengagementofthedrivinganddrivenmembersismadepossiblethefrictionbetweenthesurfacesofthemembers.Whenf
7、ullspringpressureisapplied,thespeedofthedrivinganddrivenmembersshouldbethesame.Atthemoment,theclutchmustactasacouplingdeviceandtransmitallenginepowertothetransmission,withoutslipping•However,thetransmissionshouldbeengagedtotheenginegraduallyinordertooperat
8、ethecarsmoothlyandminimizetorsionalshockonthedrivetrainbecauseanengineatidlejustdeveloplittlepower.Otherwise,thedrivingmembersareconnectedwiththedrivenmemberstooquicklyandtheenginewouldbestalled.Theflywheelis
