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1、ELECTRONICFUELINJECTION（2）ElectronicThrottle—Drive-By-WireGDI——GasolineDirectInjectionDieselCommonRailInjectionSystemPROFESSONALENGLISH:NEWTECHNOLOGIESNewWordsoctane-rating辛烷值takeadvantageof利用运用anti-knockindex抗爆指数scopeset示波器stipulate约定，规定Coastv.滑行blan
2、k空白（的）空地空虚的approachev.接近达到stall熄火retard延迟，推迟mask掩盖overswing尖峰突增jerk急拉[动，撞，跳],振动（冲击）颠簸地行进rich富的浓的丰富多彩的enrichment加浓freedom自由(度）灵活性freedomfrom免除（于）turbochargev.(涡轮)增压turbo涡轮涡轮增压器formv.形成n.形式形态形状式样ELECTRONICFUELINJECTIONElectronicThrottle—Drive-By-WireSom
3、eofthenewestMotronicsystemshaveanelectronicthrottle(alsoknownasadrive-by-wiresystem).Theelectronicthrottlehasnomechanicallinkbetweentheacceleratorpedalandthethrottlevalve.Instead,asshownintheFigureonnextpage,anacceleratorsensorpicksupyourmovementorpos
4、itionoftheacceleratorpedal.Itsignalsthecontrolunitaboutpedalmovement,andthecontrolunitsignalstheservomotoronthethrottleshafttoopen.Theelectronicthrottle(BoschcallsitEGAS)maysoundlikesomethingnoneofusneeds,butithasmanybenefits.ELECTRONICFUELINJECTIONso
5、undlike听起来好像Fig.4-29.ElectronicthrottlesendsacceleratorsignaltoMotroniccontrolunit.DCmotormovesthrottlevalve,modifiedbyenginetemperature,idlerpm,andmaximumrpmELECTRONICFUELINJECTIONThethrottleopeningsignalmaybemodifiedaccordingtoenginerpmandenginetemp
6、erature.Itcanprovidesimplifiedcruisecontrol.Itcanalsocontrolminimumrpm,replacingtheidle-speedstabilizer,andcontrolmaximumrpm,replacingthealternate-injectorcut-out.Butthere'smore.Fortractioncontrol,theelectronicthrottlelinkswiththeABS(Anti-lockBrakingS
7、ystem).Thesamewheel-speedsensorsofABSalsofeedtheASR(Anti-SlipRegulator).Whenanydrivingwheelstartstoslip,aslightbrakeapplicationpreventsthatwheelfromslippingsomuchthatthedifferentialdeliversnopowertotheotherdrivingwheel.Ifbothdrivingwheelsshowsignsofsl
8、ipping,theelectronicthrottlecutsbackpowerformaximumtraction.Tractioncontrolgivesthecarthemaxaccelerationthetirescandelivertotheroad.Iflayingdowntiresmokeisyourthing,avoidASR.Butformakingthefastesttakeoff,youcannotbeatit.ELECTRONICFUELINJECTION
