汽车实用英语电子全套配套课件韩建保 05.ppt

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1、AutomobilePracticalEnglishUnitFiveContentsV.GlossaryIV.ExercisesIII.TextB-AutomaticTransmissionII.TextA-ManualTransmissionI.RelatedKnowledgeWhatisthefunctionofthemanualtransmission?ChangingspeedratioReversePowerinterruptingI.RelatedKnowledgeStructureInputshaftGearSleeveOutputshaftIdlershaftRevers

2、eshaftBasicprinciplei12=n1/n2=z2/z1=M2/M1z1，n1，M1：Parametersofdrivinggearz2，n2，M2：ParametersofdrivengearDrivinggear1Drivengear2Speed-changedrivingmechanismofgeneralgearboxComposing：DrivingmechanismShiftingmechanismClassification:ThreeaxesgearboxTwoaxesgearboxFunction：ChangingspeedratioShiftingII.

3、TextA-ManualTransmissionAtransmissionisaspeedandpowerchangingdeviceinstalledatsomepointbetweentheengineanddrivingwheelsofthevehicle.变速器是一个安装在汽车发动机和车轮间某些位置上的变换速度和动力的装置。changing是现在分词作定语修饰device。过去分词短语installedat相当于一个定语从句Ahighertorqueshouldbeappliedtothewheelstosetanautomobileinmotionormoveuphillwit

4、hafullloadthantokeepitrollingafteritgetsunderwayonlevelstretchesoftheroad,wheninertiaishighandtractiveresistanceislow.load载荷inertia惯性tractiveresistance牵引阻力beappliedtodo施加于，应用于Tomovetheshiftrailwhenchanginggear,theforceappliedtoitmustbesufficienttopushtheballoutoftheslot.shiftrail拨叉轴此句是不定式做目的状语。现在

5、分词changing前用连词when强调与谓语动词的动作同时发生。Applied是过去分词作定语修饰theforceCharacteristic：Manipulatingeasilyandsimply；Improvingthelifeofengineandpowertrain；Automaticadaptation,improvingthepowerandeconomyofthevehicle；Improvingthecomfortofriding；Preventingoverloading,anddecreasetheexhaustpollution.III.TextB-Automat

6、icTransmissionComposingofATTorqueconverter、（Planetary）Geartransmission、Shiftingcontrolsystem（Liquidcontrol）、ElectroniccontrolsystemTorqueconverterLiquidcontrolsystemPlanetarygearmechanismVehiclespeedsignalThrottlesignalConnectingwithcrankshaftThehydraulicsystemwhichusesaspecialtransmissionfluidse

7、ntunderpressurebyanoilpumpthroughthevalvebodytocontroltheclutchesandthebandsinordertocontroltheplanetarygearsets.hydraulicsystem液压系统valvebody阀体planetarygearsets行星齿轮组which引导定语从句whichusesaspecialtransmissionfluid修饰主语hydr