汽车专业实用英语 教学课件 作者 陈晟闽 13-clutches.ppt

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1、WelcomeToClutchOperation&DiagnosisSECTION13ObjectivesDescribethevariousclutchcomponentsandtheirfunctions.Nameandexplaintheadvantagesofthedifferenttypesofpressureplateassemblies.Listthesafetyprecautionsthatshouldbefollowedduringclutchservicing.continued…ObjectivesExplainhowtoperformbasicc

2、lutchmaintenance.Namethesixmostcommonproblemsthatoccurwithclutches.Explainthebasicsofservicingaclutchassembly.continued…ClutchOperationThepressureplateisalargespring-loadedplatethatengagestheclutchbypressingthediscagainsttheflywheel.Thepressureplatemovesawayfromtheflywheelwhentheclutchpe

3、dalisdepressed.continued…ClutchOperationTheclutchreleasebearingisoperatedbytheclutchlinkage.Whentheclutchpedalisdepressed,thebearingmovestowardtheflywheel,depressingthepressureplatefingersandmovingthepressureplateawayfromtheclutchdisc.continued…ClutchComponentscontinued…ClutchComponentsC

4、lutchhousingConnectsengineandtransmissionandhousestheclutchassembly.continued…ClutchComponentsFlywheelActsasbalancerfortheengine.Addsinertiatotherotatingcrankshaft.Providesasurfacefortheclutchtocontact.continued…ClutchComponentsClutch(input)shaftProjectsfromthefrontofthetransmission.Usua

5、llyhasapilotthatridesinabearingorbushingintheendofthecrankshaft.Theclutchdiscissplinedtotheclutchshaft.Whenengaged,theclutchdiscdrivestheinputshaft.continued…ClutchComponentsClutchdiscIscoveredwithfrictionmaterial.Transmitspowerfromtheenginecrankshafttothetransmissioninputshaft.Torsional

6、coilspringsorrubbergrommetsallowthedisctorotateslightlyinrelationtothepressureplatewhiletheyabsorbthetorqueforces.continued…ClutchComponentsClutchdisc(cont’)Theclutchfacingsarerivetedtowavesprings,orcushioningsprings,whichcausethecontactpressureonthefacingstorisegraduallywhentheclutchise

7、ngaged.Thesespringseliminatechatterbydampeningtheclutchengagement.continued…ClutchComponentsClutchdisccontinued…ClutchComponentsPressureplateassemblySqueezesclutchdiscontoflywheel.Canbeengagedordisengaged.Actslikeaspring-loadedclamp.Twocommontypes,thecoilspringanddiaphrag