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ID:59081973
大小:3.44 MB
页数:30页
时间:2020-09-26
《汽车专业英语(发动机部分)ppt课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、AutomobileEnglishLesson3-3LookatthepictureII.IdentifytheEnglishnamesofthedrivelineaccordingtothepicture.1.engine;2.transmission;3.driveshaft;4.drivingwheel;5.clutch;6.universaljoint;7.finaldriveSingle-cylinderenginecylinderpistonPistonpinConnectingrodcrankshaftOilpipeInletvalveExhaustvalveTimingge
2、arOilpumpTheenginecomprisestwomechanismandfivesystems,whatarethey?crankshaftandconnectingrodmechanismValvemechanismCoolingsystemLubricationsystemfuelsupplysystemStartingsystemIgnitionsystemconnectingrodflywheelcrankshaftpistoninletvalveexhaustvalvepushrodtappettiminggears■Valvegear■ConnectingrodEn
3、gineBodycrankcasecylinderblockcylinderheadcylinderoilpassageandwaterpassageoilpanThecylindergasketWhatistheengineblockcomprisedof?thecylindersectionandthecrankcasesection有个小问题!thecylindercrankcase汽缸体曲轴箱cylindergasketcylinderheadCylinderheadcoverpadtofitsparkplugPre-questions练一练1-cylinderheadcover;
4、2-cylinderhead;3-cylindergasket;4-cylinderblock;5-oilpan油底壳气缸垫气缸体气缸盖罩气缸盖ThepistonPistontoppistonringspistonpinconnectingrodComponentsofpistonpistontoppistonheadpistonskirt活塞销孔PistonpinholeSmallendConnectingrodbushingConnectingrodBigendConnectingrodhalfshellsConnectingrodcapcompressionringsoilrings
5、pistonpinpistonconnectingrodcrankbearinghalfshellconnectingrodcapIII.ExercisesPre-questionsWhat’sthecrankshaftassemblycomposedof?crankshaftbearingstiminggearflywheelbeltpulleypistonPre-questionsWhatisregardedasthe“backbone”oftheengineandwhy?Crankshaft,becauseitcanchangethereciprocatingmotion(往复运动)
6、ofthepistonintorotary(旋转)motionandhandle(处理)theentire(全部)poweroutput.Regardas------译为:被叫做-------What’sthefunctionoftheflywheel?helpingtheenginetorunsmoothly(平稳)duringthepowerstrokeandreleasing(释放)itduringtheotherstrokes;carryingtheclutch,whichtransmits(传输)thedrivetothegearbox;hasthestarterringgear
7、,aroundits.Pre-questions功能Whereistheflywheelintheengine?therearofthecrankshaft.Pre-questionsthestarterringgear起动环形齿轮Whatisthefunctionofthevalvegearinaninternalcombustionengine?Opentheinletvalveintimeandlettheair-
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