汽车专业实用英语 教学课件 作者 陈晟闽 17-steering system.ppt

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1、WelcomeToSteeringSystemOperation&DiagnosisSECTION17ObjectivesDescribethesimilaritiesanddifferencesbetweenparallelogram,wormandroller,andrack-and-pinionsteeringlinkagesystems.Identifythetypicalmanualsteeringsystemcomponentsandtheirfunctions.Namethefiveba

2、sictypesofsteeringlinkagesystems.continued…ObjectivesIdentifythecomponentsinaparallelogramsteeringlinkagearrangementanddescribethefunctionofeach.Identifythecomponentsinamanualrack-and-pinionsteeringarrangementanddescribethefunctionofeach.continued…Objec

3、tivesDescribethefunctionandoperationofamanualsteeringgearboxandthesteeringcolumn.Explainthevariousmanualsteeringserviceprocedures.Describetheservicetothevariouspowersteeringdesigns.continued…ObjectivesPerformgeneralpowersteeringsystemchecks.Describethec

4、ommonfour-wheelsteeringsystems.continued…ParallelogramSteeringComponentsPitmanarmConnectsthelinkagetothesteeringgear.IdlerarmSupportsthecentrelinktotheframe.Centrelink,draglink,orsteeringlinkControlssidewayslinkagemovement.Tie-rodsConnectlinkagetotheste

5、eringknuckles.continued…ParallelogramSteeringcontinued…TiltandtelescopicsteeringSteeringcolumnassemblyArecirculation-ballsystemRecirculating-ballsystemusingaparallelogramlinkageAtypicalrack-and-pinionsteeringsystemAtypicalhydraulicpower-assistedsystemRa

6、ck-and-PinionSteeringRackIsatoothedbarinametalhousingthatactssimilarlytoacentrelink.PinionIsawormgearattachedtothesteeringcolumnthattransfersmovementtotherack.Tie-rodsConnecttheracktothesteeringknuckles.continued…ARack-and-PinionSteeringSystemcontinued…

7、PowerSteeringSystemTypescontinued…PowerSteeringPumpTypesRoller•Slipper•GearVane(themostcommon)Thevane,roller,andslipperpumpsaresimilarinconstructionandareallpositivedisplacementbalancedpumps.Thevanepumpconsistsofaslottedcentrerotor,anumberofflatvanestha

8、tarefittedintotheslottedrotor,andanouterpumpcamorcamringthatisslightlyellipticalinshapetoform2pumpingchambers.continued…VaneTypePowerSteeringPumpcontinued…PowerSteeringComponentsFluidPumpFluidreservoirFlowcontrolvalvePressurereli