电控柴油机电控系统

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ConstructionMachinery工程机械运用技术专业国家级教学资源库FuelInjectionSystem02ElectronicControlSystem01Unit9ElectronicControlDieselEngine

电控柴油机Part1NewWordsNewWords&Expressions1）quantityofthefuelinjected喷油量2）injectiontiming喷油正时3）injectionrate喷油速率4）injectionpressure喷油压力5）intakethrottle进气节流6）preheater

[pri:'hi:tə]n.预热装置7）crankcase['kræŋk,kes]n.曲轴箱；曲柄箱8）electroniccontrolsystem电子控制系统9）bedividedinto被划分NewWords&Expressions10）signalinputdevice信号输入装置11）actuatingelement执行元件12）actuator['æktʃʊ,etɚ]n.执行机构13）sensor

[ˈsensər]n.传感器14）optimalcontrol最佳控制15）fuelinjectionquantity喷油量16）fuelinjectiontime喷油时间Part2TextTextFunction1.Fuelinjectioncontrol:Thequantityofthefuelinjectedcontrol,injectiontimingcontrol,injectionratecontrolandinjectionpressurecontrol,etc.2.Idlecontrol:Idlespeedcontrol(ISC)andcontrolofcylinderuniformityatidle.Text3.Intakeaircontrol(IAC):Intakethrottlecontrol,variableintakeeddycurrentcontrolandvariablevalvetiming(VVT)control.4.Boostcontrol：Toperformcontroltheoperationstatusofexhaustgasturbocharger(TC)and

boostpressurebymeansofvariousmeasuresaccordingtotherotatingspeedsignal,loadsignal,boostpressuresignalofthedieselengine.

Text5.Exhaustcontrol:Exhaustgasrecirculation(EGR)control.6.Startingcontrol:Thequantityofthefuelinjectedcontrol,injectiontimingcontrol,preheatercontrol.7.Cruisecontrol:EMSKeepthecarautomaticallyrunningatacertainspeedaccordingtothespeedsignal,etc.8.Faultself-diagnosis:Twosub-systemsoffaultself-diagnosisandfailsafe.TextBasicComponentsTheelectroniccontrolsystemcanbedividedintothreebasicparts.Thesearethesignalinputdevices,enginemanagementsystem（EMS）andactuatingelementsasareshowninFig.9-1andFig.9-2.TextSignalInputDevicesEngineManagementSystem（EMS）ActuatingElementsFig.9-1BasiccomponentsofelectroniccontrolsystemTextFig.9-2StructureofelectroniccontrolsystemThrottlePositionSignalHigh-pressurePumpPCV1High-pressurePumpPCV2No.1InjectorNo.2InjectorNo.3InjectorNo.4InjectorNo.5InjectorNo.6InjectorNetwork(Othercontrollers）EMSNESignalGSignalFuelPressureSignalFuelTemperatureBoostPressureOilPressure（High、Low）WaterTemp（High、Low）InputSignals

OutputSignalsPowerText1.Thesignalinputdevicesarevarioussensors.Thefunctionofthesensoristocollecttheinformationneededinthesystem,andconvertitintoanelectricalsignaltransmittedtotheEMSviaharness.Toperformtheoptimalcontrolofenginefuelinjectionquantityandfuelinjectiontime.Text2.EMSisanintegratedcontrolelectronicdevice.Thefunctionistoprovidereferencevoltagesforvarioussensors,receiveelectricalsignalsfromsensorsorotherdevices.Thereceivedsignalsarestored,calculatedandanalyzed.Basedontheresultsofcalculationandanalysis,instructionsaregiventotheactuatingelements.Text3.Theactuatorsaredevicescontrolledbytheenginemanagementsystem

andtoperformaspecificcontrolfunction.TextCommonSensorsTheFig.9-3showsVolvoallD12Denginesensors.TextFig.9-3SensorsofVolvoD12Denginecrankcasepressuresensorcoolantlevelsensorcamshaftspeedsensoroilpressuresensorboostpressure&Temp.sensorairpressure&Temp.sensorcoolantTemp.sensorcrankshaftspeedsensorfuelpressuresensorwaterinfuelsensoroillevel&Temp.sensorPart3GrammarNotesGrammarNotes1.Toperformcontroltheoperationstatusofexhaustgasturbocharger(TC)andboostpressurebymeansofvariousmeasuresaccordingtotherotatingspeedsignal,loadsignal,boostpressuresignalofthedieselengine.bymeansof是个很专业的固定搭配，意思是：用，依靠；bymeansofvariousmeasures通过各种手段，同viavariousmeasures通过各种措施;accordingto也是固定搭配，意为：按照，根据。

此句译为：根据柴油机转速信号、负荷信号、增压压力信号等，通过各种措施，实现对废气涡轮增压器工作状态和增压压力的控制。GrammarNotes2.Thefunctionofthesensoristocollecttheinformationneededinthesystem,andconvertitintoanelectricalsignaltransmittedtotheEMSviaharness.过去分词短语neededinthesystem是宾语information的后置定语，修饰名词information，说明该信息是系统所需要的；convert…into是固定搭配，意指：将…转变成…;it指的information;过去分词短语transmittedtotheEMS是signal的后置定语，意为：被传递（被输送）给EMS的信号；via同bymeansof一样，是专业的固定搭配，意思是：用，通过；说明输送信号的方式。此句译为：传感器的功用是采集系统中所需要的信息，并将其转换成电信号，通过线束输送给发动机管理系统。GrammarNotes3.Theactuatorsaredevicescontrolledbytheenginemanagementsystemandtoperformaspecificcontrolfunction.过去分词短语controlledbytheenginemanagementsystem是devices的后置定语，修饰宾语devices；动词不定式toperformaspecificcontrolfunction是devices的后置定语，修饰宾语devices；翻译成中文时，均需将定语前置。此句译为：执行元件是受发动机管理系统控制、具体执行某项控制功能的装置。Part4ReferenceTranslation参考译文电控系统功能1）燃油喷射控制：喷油量控制、喷油正时控制、喷油速率控制和喷油压力控制等。2）怠速控制：怠速转速控制和怠速时各缸均匀性的控制。3）进气控制：进气节流控制、可变进气涡流控制和可变配气正时控制。

4）增压控制：根据柴油机转速信号、负荷信号、增压压力信号等，通过各种措施，实现对废气涡轮增压器工作状态和增压压力的控制。参考译文5）排气控制：废气再循环控制。6）起动控制：喷油量、正时控制和预热装置的控制。7）巡航控制：发动机管理系统根据车速信号等自动维持汽车以一定车速行驶。8）故障自诊断：故障自诊断和失效保护两个子系统。参考译文基本组成电子控制系统可分为信号输入装置、发动机管理系统和执行元件三大部分。如图9-1和9-2所示。信号输入装置发动机管理系统EMS执行元件图9-1电控系统基本组成参考译文图9-2电控系统