教学材料《汽车专业英语》-1.8 ignition System

1.7IgnitionSystemTitle孟思聪

Revision1FunctionsofcoolingSystem.2Recognizethepictures.节温器水泵旁通软管散热器风扇风扇及水泵皮带水套RevisionRevision热的冷却液上水箱热风冷风冷却液核心下水箱radiatorRevisionLiquid-coolingSystemAir-coolingSystemCoolingMethodsLead-inWehaveknownthefivesystemsoftheengine.FivesystemsLubricatingsystemCoolingsystemIgnitionsystemStartingsystemFuelsupplysystemLearningobjectives1.2.Relatedwords,phrasesandabbrs.3.Workingprinciplesofeachsection.4.Englishexpressionsofcomponents.Recognizethepicturesaboutthesystem.8Termsonelectricity:电线电路电流电阻电压电磁电解液Wire/wiringCircuitCurrentResistorVoltageElectromagnetElectrolyteNewLessonDiscussionReadthefirstthreeparagraphsofpart1.8quickly,discusswithyourpartnersandfindouttheanswerstothefollowingquestions:1Whatarethefunctionsoftheignitionsystem?2Whatarethetasksoftheignitionsystem?Howmanycircuitsarethereintheignitionsystem?Whatarethey?3NewLesson1Whatarethefunctionsoftheignitionsystem?Theignitionsystemcancreateanelectricsparkwithhighvoltageinordertoignitetheair-fuelmixture.Anditmustdothisatexactlytherightinstantanddoitattherateofuptoseveralthousandtimesperminuteforeachcylinderintheengine.NewLesson2Whatarethetasksoftheignitionsystem?First,itmustcreateavoltagehighenoughtoarcacrossthegapofasparkplug,thuscreatingasparkstrongenoughtoignitetheair-fuelmixtureforcombustion.Second,itmustcontrolthetimingofthatsparksoitoccursattheexactrighttimeandsendittothecorrectcylinder.12arc:Luminouselectriccurrentpassingacrossagapbetweentwoterminals.v.Formanelectricarc.13protrudev.

tostickoutfromsomewhere.

eg:Apairofshoesprotrudedfromunderthebed.14cablen.1.aplasticorribbertubecontainingwiresthatcarrytelephonemessages,electronicsignalsetc.电缆

2.athickstrongmetalropeusedonships,tosupportbridgesetc.缆绳

3.cabletelevision:acablechannel有线电视

4.atelegram电报NewLessonHowmanycircuitsarethereintheignitionsystem?Whatarethey?3TwocircuitsPrimarycircuitSecondarycircuitLow-voltageHigh-voltageNewLesson蓄电池点火开关电阻铁芯初级线圈次级线圈火花塞分电器17sparkplugECUsensorhighvoltagewiringignitioncoilECM高压线发动机控制单元电子控制模块点火线圈火花塞传感器NewLesson初级电阻电容触电分电器盖分火头真空提前点火装置分电器19Battery

Thesourceofelectricalenergyisbattery,sometimesiscalledstoragebattery.Whenstartingtheengine,itwillsupplythelowvoltage(12V)usedtooperatetheprimarycircuit.Aftertheengineisrunning,currentissuppliedbythealternator(ALT)orbythecombinationofthealternatorandbattery.NewLessonIgnitionSwitchIgnitionSwitch’sFourPositionsNewLessonWiringsinPrimaryCircuit叠片铁芯初级电路开关装置/断电器NewLessonSecondaryWinding点火线圈高压线电阻导线初级绕组次级绕组23(continued)ignitioncoilfromoutputofignitionswitchNewLessonDistributorCam与点火线圈相连的接线柱断电器触点调整螺母凸轮随动件分电器凸轮电容器NewLessonDistributorNewLessonSparkPlug伸出长度端子/高压线接头绝缘体外壳密封垫中心电极搭铁27workingcondition28distributorignitioncoilbreakersparkplug2930连接器铁芯钢壳连接弹簧塑料壳初级线圈绝缘层次级线圈环氧树脂骨架电子控制模块密封圈Summary