车辆工程专业英语PPT课件-UNIT-6--ENGINE-ELECTRICAL-SYSTEMS-TEXT-A.pptx

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1、UNIT6ENGINEELECTRICALSYSTEMSTEXTAStarting,ChargingandIgnitionSystemsPROFESSIONALENGLISHUNIT5ENGINEELECTRICALSYSTEMSTEXTAStarting,ChargingandIgnitionSystemsChargingSystemStarterSystemIgnitionSystem本次课学习内容本次课学习目标掌握发动机电气系统的组成掌握点火系统的型式及原理掌握有关的专业名词与术语了解翻译技巧—增词NEWWORDSelectromagnetic[ilektroumæg'

2、netik]a.电磁的trio['tri:ou]n.三件一套，三个一组，三重唱forward-biased['fɔ:wəd-'baiəst]正向偏压的reverse-biased[ri'və:s-'baiəst]反向偏压[偏置]的capacitor[kə'pæsitə]n.=capacitator电容器thermistor[ə:'mistə]n.热敏电阻rope[roup]n.绳,索,绳索；v.围起armature['ɑ:mətjuə]n.电枢collaps[kə'læps]v.&n.倒塌，塌陷，消失，减弱high-tension['hai-'ten∫ən]a.高（电）压的rel

3、uctor[ri'lʌktə]n.磁阻轮centrifugal[sen'trifjugəl]n.离心的advent['ædvәnt]n.出现，到来，来临chargingsystem充电系统keepupwith跟上，不落后于magneticfield磁场fieldstrength磁场强度contactpoints触点powertransistor功率晶体管integratedcircuit集成电路solidstate固态diodetrio二极管三件组合startingmotor起动机PHRASESANDEXPRESSIONStransmissionhousing变速器壳respons

4、iblefor（应）对…负责，是造成…的（主要）原因，决定着，导致withtheadventof随着…的出现（到来）intimewith与…合拍（同期）in（constant）contactwith（始终）与…保持接触pickupcoil传感线圈electriceye电眼，光电池shutterwheel遮光轮initialtiming初始点火正时vacuumadvance真空式点火提前角调节装置distributorlessignitionsystem无分电器点火系统Starting,ChargingandIgnitionSystemsChargingSystemThechargi

5、ngsystemusestherotationoftheenginetocreateelectricity.Theelectricityrechargesthebatteryandprovidespowertooperatethevariousvehicleelectricalsystems.Themodernchargingsystemconsistsofthealternatorandregulator.AlternatorThealternatorisabelt-driven,electromagneticdevice.Aftertheengineisstarted,thea

6、lternatorproduceselectricitytomeettheneedsofthevehicleandtokeepthebatterycharged.Themodernvehiclecontainsmanycircuitsthatplaceaheavyloadontheelectricalsystem.Sincemanyvehiclesareusedinstop-and-gocitydriving,thismakesitdifficulttomaintainthebatteryinafullychargedstate.Therefore,thealternatormus

7、tbeextremelyefficientatallspeeds.Atidle,whentherotoristurningrelativelyslowly,thealternatorcankeepupwiththedemandsofthevehicleelectricalsystem.Atnormalvehiclespeeds,thealternatorcanproducemuchmorevoltageandcurrentthanneeded.Toprotectthe