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1、Situation4PortMachineryMaitenanceContentTask1EngineMaintenanceLesson36EngineMaintenanceILesson37EngineMaintenanceIILesson38EngineMaintenanceIIITask2ChasisMaintenanceLesson39ChasisMaintenanceILesson40ChasisMaintenanceIITask3CraneMaintenanceLesson41Crane
2、MaintenanceILesson42CraneMaintenanceIILesson43CraneMaintenanceIIITask1EngineMaitenanceIWhytolearn?Engineisanimportantpartofthemachine,ifitcan’tworkthewholemachinehastostop,toavoidtheinconveniencestudentsneedtoknowhowtocommunicatewithforeignengineersinm
3、aintainingandrepairingthemachine.Task1EngineMaitenanceIIHowtolearn?Seminar(讨论和任务教学法为主）Organizethestudentsingroupsandaskthemtodosomerole-playbasedontheinformationofthelesson.Lecture（讲授法为辅）IIIContentLesson36EngineMaintenanceILesson37EngineMaintenanceIILe
4、sson38EngineMaintenanceIIILesson36EngineMaintenanceINewwordsTextTasks1)Discusswithyourgroupmemberstounderstandthetextthoroughly.2)MakeadialogueandactitoutNewWordsenginemaintenance发动机维修deformationn.变形crackn.裂缝,裂纹roundnesserror圆度误差cylindricalityerror圆柱度误
5、差coaxialityerror同轴度误差waterpressuremethod水压法bondingmethod粘接法repairingweldingmethod焊补法pistonringendgap活塞环开口间隙pistonringsideclearance活塞环侧隙pistonbackclearance活塞环背隙TextThefollowingpassages(lesson1,2and3)areallaboutenginemaintenance.Theymainlydealswiththefol
6、lowingaspectsaboutenginemaintenance,maintenanceforcylinderblock,cylinderhead,cylinder,pistonandconnecting-rodunitandcrankshaftandflywheelunit,maintenanceforvalvemechanism,maintenanceforfuelsystem,maintenanceforignitionsystemandmaintenanceforlubricating
7、systemandcoolingsystem.EngineMaintenanceItellsussomethingaboutmaintenanceforcylinderblock,cylinderhead,cylinder,pistonandconnecting-rodunitandcrankshaftandflywheelunit.Thecommondefectsofcylinderblockandcylinderheadaredeformation,crack,roundnesserror,cy
8、lindricalityerrorandcoaxialityerror.Wecanfindobviouscrankonlythroughourowneyes.Butsometimesweneedsomeoutsidemeanstofindhiddencrack.Forexample,wecanusewaterpressuremethod(seefig1-1).1-cylinderhead2-cylinderblock3-waterpipe4-pressuregauge
