電控柴油機(jī)燃油噴射系統(tǒng)

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ConstructionMachinery工程機(jī)械運(yùn)用技術(shù)專業(yè)國家級(jí)教學(xué)資源庫FuelInjectionSystem02ElectronicControlSystem01Unit9ElectronicControlDieselEngine

電控柴油機(jī)Part1NewWordsNewWords&Expressions1）consistof由…組成2）iscomposedof由…組成3）high-pressurefuelpump高壓泵4）fuelcommonrail燃油共軌5）fuelinjector噴油器6）pressureregulator壓力調(diào)節(jié)器7）low-pressurefuelpump低壓泵8）fuelfilter燃油濾清器9）fueltank燃油箱10）commonrailpressuresensor共軌壓力傳感器Part2TextTextFuelInjectionSystemWiththedevelopmentofcontroltechnologyandtheprogressofsociety,people'sawarenessofenvironmentalprotectionhasbeenincreasinglystrengthened,andtheemissionofengineshasbeenmorestrictlyrestricted.TextHighpressurecommonrailelectroniccontroldieselengineiswidelyusedinmoderndieselengines.TheEMSreceivessignalsfromvarioussensors,andthepressureofcommonrailiscontrolledbypressureregulatorandFCV,soastocontrolpreciselytheinjectionpressure,injectiontimeandinjectiontiming.TextPressureRegulatorTypeEngineFuelSystemThefuelsystemconsistsoflowandhigh-pressurefuellinesasshowninFig.9-4.TextThelow-pressurefuellineconsistsofafueltank,afuelfilter,alow-pressurefuelpumpandalow-pressurefuelchamberofthehigh-pressurefuelpump.Thehighpressurefuellineiscomposedofhighpressurefuelpump,highpressurefuelpipe,commonrail,fuelinjector,etc.Thepressureofcommonrailiscontrolledbypressureregulator.Text①②③④⑤⑥⑦Fig.9-4Pressureregulatortypeenginefuelsystem1-high-pressurefuelpump；2-fuelcommonrail；3-fuelinjector；4-pressureregulator；5-low-pressurefuelpump；6-fuelfilter；7-fueltankTextThecontrolsystemisshowninFig.9-5.Thesensorsofcrankshaftposition,camshaftposition,temperature,pressureandpedalpositionprovidesignalstotheEMS,trackpressuresensorfeedbacksignalcontrolsthepressureregulator,toperformaclosed-loopcontrolforthetrackpressureofthehigh-pressuresystem,toachievetheprecisecontrolinjectionpressure,theinjectiontimingandtheinjectiontimeofthefuelinjector.Text(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)Fig.9-5Pressureregulatortypeenginecontrolsystemfueltanklow-pressurefuelpumphigh-pressurefuelpumpcommonrailpressuresensorfuelcommonrailfuelinjectorEMSCKPCMPAPSS/WWTSTextOperatingprinciples:thelow-pressurefuelpumpdeliversfuelfromthefueltanktothehigh-pressurepumpafterovercomingtheresistanceofthefuelfilter.Thehigh-pressurepumpconvertsthelow-pressurefuelintohigh-pressurefuelandsuppliesthehigh-pressurefuelrail.TextThepressureregulatorcontrolsthepressureofthehigh-pressurefuelrail.TheEMSreceiveselectricalsignalsfromthesensorandcontrolsaccuratelytheinjectiontimeandtimingoftheinjector.TextFCVTypeElectronicallyControlledHighPressureCommonRailFuelSystemThefuelsystemconsistsoflowandhigh-pressurefuellines.Thelow-pressurefuellineincludesafueltank,alow-pressurefuelpump,afuelfilter,FCVvalveandreturnline;thehighpressurefuellinecontainshighpressurefuelpump,highpressurefuelrail,highpressurefuelpipe,fuelinjectorandsoon.Operatingprinciples:(omitted)Part3ReferenceTranslation參考譯文燃油噴射系統(tǒng)

隨著控制技術(shù)的發(fā)展和社會(huì)的進(jìn)步，人類的環(huán)保意識(shí)日益增強(qiáng)，對(duì)發(fā)動(dòng)機(jī)的排放進(jìn)行更加嚴(yán)格的限制；現(xiàn)代柴油機(jī)普遍采用高壓共軌式電控柴油機(jī)，由發(fā)動(dòng)機(jī)管理系統(tǒng)接收各傳感器信號(hào)，由壓力調(diào)節(jié)器和FCV等兩種方式控制共軌壓力，精確控制噴油壓力、噴油時(shí)間和噴油時(shí)刻。參考譯文（一）壓力調(diào)節(jié)器式發(fā)動(dòng)機(jī)燃油系統(tǒng)燃油系統(tǒng)如圖9-4所示，由高壓油路和低壓油路組成：低壓油路有油箱、濾清器、低壓油泵至高壓泵低壓油腔；高壓油路由高壓油泵、高壓油管、共軌管、噴油器等組成。由壓力調(diào)節(jié)器控制共軌管油壓。參考譯文

圖9-4壓力調(diào)節(jié)器式發(fā)動(dòng)機(jī)燃油系統(tǒng)參考譯文控制系統(tǒng)如圖9-5所示，由曲軸、凸輪軸位置、溫度、壓力、踏板位置傳感器提供信號(hào)給EMS，由軌道壓力傳感器反饋信號(hào)控制壓力調(diào)節(jié)器，實(shí)施閉環(huán)控制高壓系統(tǒng)軌道壓力，達(dá)到精確控制噴油器噴油壓力、噴油時(shí)刻和噴油時(shí)間。工作原理：低壓油泵將油箱中燃油克服濾清器阻力后輸送給高壓泵，高壓泵將低壓油變?yōu)楦邏河?，提供給高壓油軌，壓力調(diào)節(jié)器控制高壓油