2019年汽车专业外语051ppt课件.ppt

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1、ThePowerTrain传动系统Unit5PassageATwofunctionsTransmitspowerfromenginetothedriveshaft/wheelsVariestheamountoftorquePassageAPowerTrain(Ⅰ)PassageAPowerTrain(Ⅰ)PassageAIncludes:Engines:SIorCIengineTransmission:ManualorAutomaticClutch:onmanualtransmission,ortorqueconverteronau

2、tomatictransmissionDriveshaft:transmitsthepowerfromthetransmissiontothedifferentialDifferential:carriesthepowertotwowheelaxles.PassageAManualTransmissionPassageAGearsinsidethetransmissionchangethecar’sdrive-wheelspeedandtorqueinrelationtoenginespeedandtorque,whichkeeps

3、theengine’soutputmatchedasclosedaspossibletovaryingroadspeedsandloads.Manualtransmissionrequiresaclutchtoapplyandremoveenginetorquetotheinputshaftofthetransmission.Manualtransmissionusuallyhasfourorfivespeeds,andoftenhas“overdrive”,whichmeansthattheoutputshaftcanturnfa

4、sterthantheinputshaftforfueleconomyonthehighway.PassageAClutchPassageATheclutchallowsenginepowertobeappliedgraduallywhenavehicleisstartingout,andinterruptspowertoavoidgearcrunchingwhenshifting.EngagingandDisengaging.Basiccomponentsare:theflywheel,clutchdisc,pressurepla

5、te,releasingbearingandlinkage.autorepair.about/library/faqs/bl961g.htmPassageAClutchPassageAFlywheelBoltedtothecrankshaftofengineIsitasameoneinenginestartingsystem?vibratesoftware/html_help/html/Diagnosis/Engine/first_order_engine.htmFrontRearPassageAClutchPassageAClut

6、chdiscBasicallyasteelplate,coveredbyfrictionalmaterialWhat’sthefunctionofmiddlespringinclutchdisc?Decreasethetorsionalvibrationgasgoo/showroom/hfclutch/auto-products/1033603.htmlPassageAReleasebearingandLinkagePassageAReleasebearing:Thethrow-outbearingmovestowardthefly

7、wheel,pushinginthepressureplate’sfingersandmovingthepressureplatefingersorleversagainstpressureplatespringforce.Releasebearing:Thethrow-outbearingmovestowardtheflywheel,pushinginthepressureplate’sfingersandmovingthepressureplatefingersorleversagainstpressureplatespring

8、force.Linkage:Transmitsandmultipliesthedriver’slegforcetotheforkofclutchpressureplate.MechanicalclutchandHydraulicclu