電控柴油機電控系統(tǒng)

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ConstructionMachinery工程機械運用技術(shù)專業(yè)國家級教學資源庫FuelInjectionSystem02ElectronicControlSystem01Unit9ElectronicControlDieselEngine

電控柴油機Part1NewWordsNewWords&Expressions1）quantityofthefuelinjected噴油量2）injectiontiming噴油正時3）injectionrate噴油速率4）injectionpressure噴油壓力5）intakethrottle進氣節(jié)流6）preheater

[pri:'hi:t?]n.預熱裝置7）crankcase['kr??k,kes]n.曲軸箱；曲柄箱8）electroniccontrolsystem電子控制系統(tǒng)9）bedividedinto被劃分NewWords&Expressions10）signalinputdevice信號輸入裝置11）actuatingelement執(zhí)行元件12）actuator['?kt??,et?]n.執(zhí)行機構(gòu)13）sensor

[?sens?r]n.傳感器14）optimalcontrol最佳控制15）fuelinjectionquantity噴油量16）fuelinjectiontime噴油時間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是個很專業(yè)的固定搭配，意思是：用，依靠；bymeansofvariousmeasures通過各種手段，同viavariousmeasures通過各種措施;accordingto也是固定搭配，意為：按照，根據(jù)。

此句譯為：根據(jù)柴油機轉(zhuǎn)速信號、負荷信號、增壓壓力信號等，通過各種措施，實現(xiàn)對廢氣渦輪增壓器工作狀態(tài)和增壓壓力的控制。GrammarNotes2.Thefunctionofthesensoristocollecttheinformationneededinthesystem,andconvertitintoanelectricalsignaltransmittedtotheEMSviaharness.過去分詞短語neededinthesystem是賓語information的后置定語，修飾名詞information，說明該信息是系統(tǒng)所需要的；convert…into是固定搭配，意指：將…轉(zhuǎn)變成…;it指的information;過去分詞短語transmittedtotheEMS是signal的后置定語，意為：被傳遞（被輸送）給EMS的信號；via同bymeansof一樣，是專業(yè)的固定搭配，意思是：用，通過；說明輸送信號的方式。此句譯為：傳感器的功用是采集系統(tǒng)中所需要的信息，并將其轉(zhuǎn)換成電信號，通過線束輸送給發(fā)動機管理系統(tǒng)。GrammarNotes3.Theactuatorsaredevicescontrolledbytheenginemanagementsystemandtoperformaspecificcontrolfunction.過去分詞短語controlledbytheenginemanagementsystem是devices的后置定語，修飾賓語devices；動詞不定式toperformaspecificcontrolfunction是devices的后置定語，修飾賓語devices；翻譯成中文時，均需將定語前置。此句譯為：執(zhí)行元件是受發(fā)動機管理系統(tǒng)控制、具體執(zhí)行某項控制功能的裝置。Part4ReferenceTranslation參考譯文電控系統(tǒng)功能1）燃油噴射控制：噴油量控制、噴油正時控制、噴油速率控制和噴油壓力控制等。2）怠速控制：怠速轉(zhuǎn)速控制和怠速時各缸均勻性的控制。3）進氣控制：進氣節(jié)流控制、可變進氣渦流控制和可變配氣正時控制。

4）增壓控制：根據(jù)柴油機轉(zhuǎn)速信號、負荷信號、增壓壓力信號等，通過各種措施，實現(xiàn)對廢氣渦輪增壓器工作狀態(tài)和增壓壓力的控制。參考譯文5）排氣控制：廢氣再循環(huán)控制。6）起動控制：噴油量、正時控制和預熱裝置的控制。7）巡航控制：發(fā)動機管理系統(tǒng)根據(jù)車速信號等自動維持汽車以一定車速行駛。8）故障自診斷：故障自診斷和失效保護兩個子系統(tǒng)。參考譯文基本組成電子控制系統(tǒng)可分為信號輸入裝置、發(fā)動機管理系統(tǒng)和執(zhí)行元件三大部分。如圖9-1和9-2所示。信號輸入裝置發(fā)動機管理系統(tǒng)EMS執(zhí)行元件圖9-1電控系統(tǒng)基本組成參考譯文圖9-2電控系統(tǒng)