专业英语-4汽车底盘(一)ppt课件

汽车实用英语,AutomobileEnglish,TaskThreeAutomobileChassis,Objectives1.Toknowabouttheimportanceoftheautomobilechassis;2.Tolearnthemainpartsoftheautomobilechassis;3.Tolearnthefunctionofthebrakingsystem,powertrain,steeringsystem,andsuspensionsystem.,2,1,PartWarmupKnowaboutautomobilechassis,3,PartWarmupKnowaboutautomobilechassis,4,1,PartWarmupKnowaboutautomobilechassis,5,1,PartWarmupKnowaboutautomobilechassis,6,Grasptheusefulwordsandphrasespulltooneside跑偏tireinflation胎压tirewear轮胎磨损,PartListeningandspeaking,7,Thefourmainsystemsofautomobilechassisarepowertrain(ordriveline)传动系,steeringsystem转向系,brakingsystem制动系andsuspensionsystem悬挂.,PartReadingPassageOneMainstructureofautomobilechassis,8,PartReadingPassageOneMainstructureofautomobilechassisSteeringsystem转向系统,9,PartReadingPassageOneMainstructureofautomobilechassisSteeringsystem,10,Thesteeringsystemisthemeansbywhichthedriverofavehicleisabletocontrolthepositionofthefrontwheels.Thesystemmustprovideeaseofhandling,gooddirectionalcontrol,andstability.,PartReadingPassageOneMainstructureofautomobilechassisSteeringsystem,11,Therearetwotypesofthesteeringsystem,manualsteeringsystemandpowersteeringsystem.Powersteeringsystemincludeshydraulic（液压）powersteeringsystem,electricpowersteering(EPS)andelectrichydraulicpowersteeringsystem(EHPS).,PartReadingPassageOneMainstructureofautomobilechassisSteeringsystem,12,Type:Mechanicalsteeringsystem机械转向系统Powersteeringsystem助力转向系统Hydraulicpowersteeringsystem液压助力转向系统Electroniccontrolpowersteering(EPS)Electro-hydraulicpowersteeringsystem(EHPS),PartReadingPassageOneMainstructureofautomobilechassisSteeringsystem,13,Thekeycomponentsthatmakeupthesteeringsystemarethesteeringwheel,steeringcolumn,steeringshaft,steeringgear,pitmanarm（垂臂）,draglink（直拉杆）,steeringarm（转向节）,balljoints,andtie-rodassembly（横拉杆）.Hydraulicpowersteeringsystemsaddahydraulicpump,fluidreservoir,hoses,andeitherapowerassistunitmountedon,orintegralwithasteeringgearassembly.,PartReadingPassageOneMainstructureofautomobilechassisSteeringsystem,14,15,16,17,PartReadingPassageOneMainstructureofautomobilechassisSuspensionsystem悬挂系统,18,PartReadingPassageOneMainstructureofautomobilechassisSuspensionsystem,Suspensionsystemhasthefollowingfunctions:Tokeepcarswheelsinfirmcontactwiththeroad.Toprovideacomfortablerideforthepassengers.Toprovidesteeringstabilitywithgoodhandling.,19,PartReadingPassageOneMainstructureofautomobilechassisSuspensionsystem,Therearethreefundamentalcomponentsofanysuspension:thesprings（弹簧）,shockabsorbers（减震器）andanti-swaybar(connectinglinkages)（横向稳定杆）.Withouttheseparts,thecomfortandeaseofdrivingwouldbereduced.,20,Additionalwords:IndependentsuspensionDependentsuspensionNon-independentsuspension,PartReadingPassageOneMainstructureofautomobilechassisSuspensionsystem,21,Coilspring（螺旋弹簧）Leafspring（钢板弹簧）Torsionbar（扭力杆）Airspring（空气弹簧）,PartReadingPassageOneMainstructureofautomobilechassisSuspensionsystem,22,ElectroniccontrolsuspensionsystemActivesuspensionsystemSemi-activesuspensionsystemSpringstiffness弹簧刚度,PartReadingPassageOneMainstructureofautomobilechassisSuspensionsystem,23,Wheelalignment四轮定位Wheelcamber（前轮外倾角）KingpinCaster（主销后倾角）KingpinInclination（主销内倾角）Toe-in（前束）,PartReadingPassageOneMainstructureofautomobilechassisSuspensionsystem,24,25,26,PartReadingPassageOneMainstructureofautomobilechassisBrakingsystem（制动系统）,Automobilebrakesmustbeabletostopthecar,preventexcessspeedwhencoasting,andholdthevehicleinpositionwhenstoppedongrades.Eachvehiclemusthavetwoindependentbrakesystemsforsafety.Themainbrakesystemisservicebrakesystem（主制动系统）.Thesecondaryisparkingbrakesystem（驻车制动）.,27,PartReadingPassageOneMainstructureofautomobilechassisBrakingsystem,brakepedal制动踏板mastercylinder制动总泵brakeline制动油管wheelcylinder制动分泵brakedrum制动鼓brakelining制动蹄片,28,brakeshoe制动蹄brakeshoereturnspring回位弹簧wheelcylinderpiston车轮油缸活塞mastercylinderpiston主缸活塞pushrod推杆,PartReadingPassageOneMainstructureofautomobilechassisBrakingsystem,29,Anti-lockBrakingSystem,30,PartReadingPassageOneMainstructureofautomobilechassisBrakingsystem,31,PartReadingPassageOneMainstructureofautomobilechassisBrakingsystem,32,33,34,35,36,Thepowertrain（传动系）carriespowerfromtheenginecrankshafttothecarwheels,sothewheelsrotateandthecarmoves.,PartReadingPassageTwoPowertrain,37,PartReadingPassageTwoPowertrain,38,rear-wheeldrivelinessystem,PartReadingPassageTwoPowertrain,39,40,PartReadingPassageTwoPowertrain,41,Angledrive,Universaldrive,Driveaxle,Goforward,transmission,clutch,engine,EngineRRdrivebussketchmap,42,43,44,45,Theclutchinanautomotivevehicleprovidesameansofconnectinganddisconnectingtheenginefromthetransmission,bothstartingupandduringshifts.,PartReadingPassageTwoPowertrainClutch,46,Thetransmissionprovidesameansofvaryingtherelationshipbetweenthespeedoftheengineandthespeedofthewheels.Manualtransmissionrequiresuseofaclutchtoremovetheenginetorquetothetransmissioninputshaft.,PartReadingPassageTwoPowertrainTransmission,47,Additionalwords可变速比variableratios有级变速definiteratios无级变速indefiniteratios分动器transfercase,transferbox无级变速器(CVT)ContinuouslyVariableTransmission,PartReadingPassageTwoPowertrainTransmission,48,膜片弹簧离合器diaphragmspringclutch四挡变速器four-speedtransmission输入轴（第一轴）inputshaft输出轴（第二轴）outputshaft中间轴countershaft倒挡轴reversegearshaft,PartReadingPassageTwoPowertrainTransmission,49,常啮合constantmesh低速挡lowgear高速挡highgear最高速挡topgear换挡shift啮合套slidingsleeve同步器synchronizer变速杆shiftinglever,PartReadingPassageTwoPowertrainTransmission,50,空挡neutralgear一挡thefirstgear二挡thesecondgear三挡thethirdgear倒挡reversegear直接挡directgear超速挡overdrive,PartReadingPassageTwoPowertrainTransmission,51,Inanautomatictransmission,gearratiosarechangedautomatically.Thiseliminatestheneedforthedrivertooperatetheclutchandmanually“shiftgears”.,PartReadingPassageTwoPowertrainAutomatictransmission,52,Thetypicalautomatictransmissionconsistsofafluidtorqueconverter（液力变矩器）,aplanetary-gearsystem（行星齿轮机构）,andahydrauliccontrolsystem（液压控制系统）.Inadditiontotheforward-gearratios,neutral（空挡）,andreverse（倒档）,theautomatictransmissionhasa“park”position.,PartReadingPassageTwoPowertrainAutomatictransmission,53,54,PartReadingPassageTwoPowertrainAutomatictransmission,55,Thedriveshaft(propellershaft)connectsthetransmissionoutputshafttothedifferentialpinionshaft.Theuniversaljointisusedtoconnectthedriveshafttothetransmissionoutputshaft.U-jointsallowthedriveshafttoflexwhenthedriveanglechanges.,PartReadingPassageTwoPowertrainDriveshaft,56,Whenthecarbeginstoroundacurve,thedifferentialpiniongearsrotateonthepinionshaft.Thispermitstheouterwheeltoturnfasterthantheinnerwheel.,PartReadingPassageTwoPowertrainDifferential,57,PartReadingPassageTwoPowertrainDifferential,58,Eachvehiclemusthavetwoindependentbrakesystemsforsafety.Themainbrakesystemis_,Thesecondaryis_.,servicebrakesystem,parkingbrakesystem,PartReadingPassageTwoPowertrainExercises,59,Thebrakesystemisoneofthemostimportantsafetysystemsonthe_.,vehicle,PartReadingPassageTwoPowertrainExercises,60,The_inanautomobileprovidesameansofconnectinganddisconnectingtheenginefromthetransmission.,clutch,PartReadingPassageTwoPowertrainExercises,61,Manualtransmissionrequiresuseofa_toremovetheenginetorquetothetransmissioninputshaft.,clutch,PartReadingPassageTwoPowertrainExercises,62,Thesteeringgearmultipliessteering_andchangesitsdirectionasreceivedthroughthesteeringshaftfromthesteeringwheel.,torque,PartReadingPassageTwoPowertrainExercises,63,Thesteeringsystemisthemeansbywhichthedriverofavehicleisabletocontrolthepositionofthe_.,frontwheels,PartReadingPassageTwoPowertrainExercises,64,The_providesameansofvaryingtherelationshipbetweenthespeedoftheengineandthespeedofthewheels.A.clutchB.driveshaftC.tireD.transmission,PartReadingPassageTwoPowertrainExercises,65,The_allowsyoutoconnectanddisconnecttheengineandthetransmissionbothstartingupandduringshifts.A.clutchB.flywheelC.brakeshoeD.cab,PartReadingPassageTwoPowertrainExercises,66,Automobile_mustbeabletostopthecar,preventexcessspeedwhencoasting,andholdthevehicleinpositionwhenstoppedongrades.A.brakesB.engineC.transmissionD.clutch,PartReadingPassageTwoPowertrainExercises,67,Hydraulicbrakesystemsutilize_totransferforcefromthedriversfoottothebrakeshoes.A.airB.solidC.liquidD.linkage,PartReadingPassageTwoPowertrainExercises,68,Answerthefollowingquestions.1.Whatisthefunctionofthepowertrain?,Tocarrypowerfromtheenginetothewheels.,PartReadingPassageTwoPowertrainExe