汽车专业实用英语 教学课件 作者 陈晟闽 09-the starter.ppt

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1、WelcomeToTheStarterOperation&DiagnosisSECTION9ObjectivesExplainthepurposeofthestartingsystem.Listthecomponentsofthestartingsystem,startercircuit,andcontrolcircuit.Explainthedifferenttypesofmagneticswitchesandstarterdrivemechanisms.Explainhowastartermotoropera

2、tes.continued…ObjectivesDescribetheoperationofthedifferenttypesofstartermotors.Performbasicteststodeterminetheproblemareasinastartingsystem.Performandaccuratelyinterprettheresultsofacurrentdrawtest.continued…StartingSystemThevehicle’sstartingsystemisdesignedt

3、oturnorcranktheengineoverfastenoughuntilitcanstartandoperateunderitsownpower.Todothis,thestartermotorreceiveselectricalpowerfromthebattery.Thestartermotorthenconvertsthisenergyintomechanicalenergy,whichittransmitsthroughthedrivemechanismtotheengine’sflywheel.

4、continued…StartingSystemComponentsBatteryCableandwiresIgnitionswitchStartersolenoidorrelayStartermotorStarterdriveFlywheelringgearStartersafetyswitchcontinued…Atypicalengine-startingsystem电磁线圈起动机驻车空档开关点火开关连接点蓄电池Cutawayviewofasolenoidstarter螺线管线圈绕组回位弹簧柱塞拨叉枢轴销

5、衬套电枢轴驱动转动齿轮单向离合器极靴励磁线圈电刷组电动机端子柱塞接触盘Componentsofthefieldcoilstarter励磁线圈夹刷器碳刷换向器电枢绕组电枢轴电枢铁心极靴Theconnectionbetweenthefieldcoilandthearmature换向器电刷极靴励磁线圈电机端子Acutawayviewofanoverrunningclutchwithpiniongear壳驱动齿轮套圈驱动齿轮滚轮弹簧滚轮ATypicalStartingSystemcontinued…StarterMoto

6、rDrivesSolenoid-actuateddirectdrivePositiveengagement,movablepoleshoedriveUsedonolderFordproductsSolenoid-actuatedgearreductiondriveUsedwithgearreductionstartersUsedinconjunctionwithaplanetarygearsetcontinued…ControlCircuitComponentsStartingsafetyswitchPreven

7、tsvehiclefromstartingunlessinparkorneutralorwithclutchdisengaged.IgnitionswitchSolenoidorrelayAllowsasmallamountofcurrenttocontrolthehighcurrentstartercircuit.continued…StarterMotorConstructionThestarterisaspecialtypeofelectricmotordesignedtooperateundergreat

8、electricaloverloadsandtoproduceveryhighhorsepower.Thestartermotorconsistsofahousing,fieldcoils,anarmature,acommutatorandbrushes,andendframes.continued…StarterMotorConstructionThestarterho