汽车专业英语

GasolineFuelSystemWordsandExpressionsengineknock发动机爆震(燃),发动机敲缸octanenumber辛烷数,辛烷值excessairratio/factor/coefficient过量空气系数weakmixture稀混合气richmixture浓混合气throttlevalve节气门,油门,节流阀fuelmanagement燃油消耗量调节，耗油量控制ignitionadvance(angle)点火提前（角）dwellangle持续角referencemark参考点，标记，基准part-load部分负荷fullload全负荷susceptibilityn.敏感度,敏感性exhaustgasrecirculation(EGR)废气再循环open-loopsystem开环系统closed-loopsystem闭环系统tankventilation油罐通风（换气）ignitiontiming点火正时，点火时间actuator调节器，执行器inductivesensor感应传感器angularvelocity角速度analogtodigitalconverter模拟数字转换器digitalsignalprocessing数字信号处理（技术、方法）wordlength字长quartz-clock石英钟gasolinedirectinjection(GDI)缸内直喷式汽油机系统fuelconsumption燃油消耗engineerv.设计、策划deployv.使用，展开governor调速器variable-speedgovernor全程式调速器minimum-maximum-speedgovernor两级式调速器combinationgovernor复合式调速器driveability驾驶性能，操纵性能，操纵灵活性turbocharger涡轮增压器servosolenoidvalve伺服电磁阀reliefvalve溢流阀tailpipe排气尾管muffler消声器three-waycatalyticconverter三元催化转化器Reference:1.TheMotronicsystemisanengine-managementsystemcomprisingacontrolunit(ECU)whichimplementsatleastthetwobasicfunctionsignitionandfuelinjection,butwhich,howevermaycontainadditionalsubsystemsasrequiredforimprovedenginecontrol.2.Themainparameterswhicheffectthecombustionprocessaredetectedasmeasuredvaluesandprocessedtogethersuchthattheoptimumignitionandinjectiontimingiscalculatedforinstantaneousengineoperatingconditions.3.Whereasaslightlydifferentallocationinthepart-loadrangenormallyonlyincreasesconsumptionorexhaustemissions,atfullloadneartheknocklimitthesusceptibilitytoengineknockingincreases.4.Thiscombinationofsubsystemmakessensefromaphysicalstandpoint:itenablesabasicsystem(ignitionandfuelinjection)withopen-loopfunctionalcontrolaswellasanexpandedsystem(incorporatingknockandlambdacontrols)withclosed-loopfunctionalcontrolinamanagementsystem.5.SystemswhichuseinputandoutputsignalsdifferentfromthoseusedbytheMotronicsystembutwhichrequireverylimiteddataexchangewiththeMotronicsystemarenotintegratedbutratherareconnectedwiththeMotronicsystemviainterfaces.6.Indirectinjectionengines,injectiontypicallyoccursduringtheintakestrokeandaveryshorttimecomparedtothe720ºanMPIenginetypicallyhasforfueldelivery.Exercise1.TranslatethefollowingexpressionsorpassagesintoEnglishorChinese.(1)节气门位置传感器；进气歧管压力传感器；燃油消耗；参考点；空燃比；化油器式燃油系统；模数转换器；可编程序控制器；数字信号处理；点火正时(2)电子控制汽油喷射系统能按照不同工况较为精确地供给发动机最佳比例的混合气，因此大大改善了发动机的动力性、经济性和排放性能。(3)Fueldeliveryiscontrolledbytheinjectorswhicharecycledbythecomputer.Thecomputerproducesasignaltoopentheinjectorsforacertainlengthoftimedependingonengineconditionsrelayedbysensors.(4)Theinjectionpumpinthejerkpump(脉动作用泵,高压燃油喷射泵)systemisusedtotime,meterandpressurizethefuel.Thisisthemostcommonandutilizedsystem.Theplungersaredrivenbyacamshaftthatisdesignedtocontroltheinjectioncharacteristicsoftheengine.(5)Oncethrottleopeningandrpmarereducedtocruisingconditions,mostsystemswilljumpbackintotheclosedloopmodewheretheywillstayforalargeportionofthetimeonmoststreetdrivenapplications.