汽车专业英语(幻灯片)chapter 5 clutch(3.1-3.2)

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1、Review1:What’sthemainfunctionofchassis?ConveysthedrivetothewheelsAbsorbstheroadshocksControlsthedirectionofmovementSlowsdownthevehicleProvidesthesupportforautomotivecomponents3.1overviewofpowertrainReview2:Listthemainpartsofchassis.PowertrainRunningGearSteeringSys

2、temBrakingSystemPowertrain1－Clutch2－Transmission3－UJ(Universaljoints)4－Driveshaft5－Finaldrive6－Differential7－Half-shaftRunningGear1－Frontaxle2－Rearaxle3－Suspension4－Frame5－WheelSteeringSystem1－Steeringwheel2－Steeringaxle3－Steeringgear/box4－Steeringknuckle5－trackro

3、dbrakepedal2.mastercylinder3.meteringvalve4.proportionvalve5.brakehose6.discbrake7.brakecaliper8.wheelcylinder9.drumbrakeBrakingSystemReview3:Listthetypesofchassislayout.FF=FrontEngineFrontDriveFR=FrontEngineRearDriveRR=RearEngineRearDriveMR=MiddleEngineRearDriven

4、WD=AllWheelDriveFF=FrontEngineFrontDriveAdvantages:1.Lowerfloorgivesgoodcorneringandlowcargivessmallairresistance2.Shortcar3.Flatfloor,nopropellershafttunnelorgearboxprotrusions4.MajorityofweightatfrontgivesgoodgripandgoodcorneringDisadvantages:1.Complicatedstruct

5、ureandtechnology2.Highcost3.HardtoserviceApplication:salooncar(Br.E.)=sedan(Am.E.)FR=FrontEngineRearDriveAdvantages:1.Fairlyevenloadappliedtoeachwheel2.Maincomponentseasilyremoved3.SimpletypeofuniversaljointisusedDisadvantages:1.Lowefficiency2.BigWeight3.Theheight

6、offloorislimitedApplication:Mosttrucks,somesalooncars,somebusesRR=RearEngineRearDriveAdvantages:1Largeloadondrivingwheelsgivesgoodgrip2Compactlayout,shortcarDisadvantages:1.Remoteoperatingsystemiscomplicatedlocated2.Enginecann’tpreventdustwell3.HardtoserviceApplic

7、ation:HeavyandMiddlepassengercarsMR=MiddleEngineRearDriveAdvantages:1.Concentrativeweight2.Highefficiency3.GoodhandlingpropertiesDisadvantages:1.Engineneedsspecialdesign2.Hardtoservice3.ComplicatedremoteoperatingsystemApplication:MostsportscarsnWD=AllWheelDriveAdv

8、antages:1.Fairlyevenloadappliedtoeachwheel2.Eachtireisevenlyabraded3.Bestcross-countrycapabilityDisadvantages:1.Complicatedstructureandhighcost2.Hardtos