柴油机外文翻译

dieselengineelectroniccontroltechnologydevelopmentElectronicallycontrolleddieselenginetechnologystartedinthe20thcentury,70s,80ssincethe20thcentury,theUnitedKingdomLucascompany,RobertBoschGmbHofGermany,Mercedes-BenzMotorCompany,AmericanGeneralDetroitDieselCorporation,CumminsInc.,CaterpillarInc.,Japan50LingMotorCo.andKomatsuLtd.arecompetingtodevelopnewproductsandmarkettomeettheincreasinglystringentemissionsregulations.Becausedieselengineshavehightorque,high-life,lowfuelconsumptionandlowemissionscharacteristicsofdieselenginevehiclesandsolvingtheenergyproblemofconstructionmachinerythemostrealisticandmostreliablemeans.Thereforetheuseofdieselengineshasbecomeanincreasinglywidespread,moreandmorequantity.Atthesametime,thepowerofdieselengineperformance,economicperformance,emissioncontrolandnoisepollutionarealsogettinghigherandhigher.Torelyontraditionalmechanicalcontrolfuelinjectionsystemhasbeenunabletomeettheaboverequirements,butalsodifficulttoachievefuelinjectionquantity,injectionpressureandinjectiontimingfullyfunctioninginaccordancewiththebestworkingconditionrequirements.Inrecentyears,withcomputertechnology,sensortechnologyandinformationtechnologyisdevelopingrapidly,sothatthereliabilityofelectronicproducts,cost,size,etc.toalldieselenginestomeettherequirementsforelectroniccontrolandelectronicallycontrolledfuelinjectioneasytoachieve.Infact,dieselexhaustCOandHCthangasolineenginesmuchless,NOXemissionsandgasolineenginesimilarto,butmoreexhaustparticles,whichisrelatedtodieselenginecombustionmechanism.Dieselisanon-homogeneouscombustion,combustiblemixtureformedaveryshorttime,andcombustiblegasmixtureformationandcombustionprocessinterlacedtogether.DieselFuelInjectionthroughtheanalysisofthelawtobe:theatomizationoffuelinjectedintothequalityofthegasflowinsidethecylinderandcombustionchambershape,etc.directlyaffecttheprogressofthecombustionprocess,aswellasthegenerationofharmfulemissions.Improveatomizationofdieselfuelinjectionpressureandtheeffectoftheuseofpre-injection,suchassub-jetcaneffectivelyimprovetheemissions.Afteryearsofresearchandnewtechnologyapplications,secondgenerationofthedevelopmentoftheelectroniccontrolfuelinjectionsystem.Inuse\positioncontrol\ofthefirstgenerationofelectroniccontrolfuelinjectionsystem,keepthebasiccompositionandstructureoftraditionalfuelinjectionsystem,onlytheoriginalmechanicalfuelpumpandmechanicalcontrolcomponentswithelectronicallycontrolledfuelinjectionpumpanditscontrolpartsreplaced,bysettingthecontrolsystem,toimprovecontrolaccuracyandresponsespeedofdieselenginestructurealmostdonotneedtochange,theproductionofgoodinheritance,easytoupgradetotheexistingdieselengine.Thedisadvantageisthatthepositioncontrolsystemfrequencyresponseisslow,thecontrolfrequencyislow,controlthedegreeoffreedomcontrolprecisionisnothighenough,injectionpressurecontrolalone.Inthe\timecontrol\ofthefirstgenerationofelectroniccontrolfuelinjectionsystem,basicretainthetraditionalcompositionandstructureofthefuelinjectionsystem,controlsystem,bysettingtheformationofhighfrequencycontrolsystem,digital,determinedbythesolenoidvalveclosingtimeandclosedtimecycleforoil(spray)quantityandinjectiontiming,thecontroldegreeoffreedomandcontrolaccuracyareincomparable\positioncontrol\,itstechnicaldifficultyishowtospeeduptheneedtobulkoiltheresponsespeedofhigh-speedsolenoidvalve,fuelinjectionpressurearenotindependentcontrolatthesametime.Thefirstgenerationofelectroniccontrolfuelinjectionsystem,includingelectricinlinepumppartandelectriccontrolsystemandelectriccontroldistributionpumpsystemmonomerpumpfuelinjectionsystemorelectricpumpnozzleinjectionsystem.Butwhateverelectroniccontrolsystemdevelopment,overall,electroniccontrolofdieselengineisthemostimportantthingtotheelectroniccontroloffuelinjectionsystem,implementationoffuelinjectionandinjectiontimingwiththeoperatingconditionsofrealtimecontrol,controlledfuelinjectionsystemistheobject.Itappliesvarioussensors,real-timedetectionofdieselengineoperatingparameters,includingspeed,temperature,pressure,etc.,makethemsynchronouslyinputcomputer,andtheparametersoftheadvancehasbeenstoredinthecomputervalueoroperationofthefuelinjectionquantity,injectiontimingpulsespectrumisusedinthecomparison.Afterprocessingandcalculation,accordingtotheoperationneedtobethebesttocontroltheoutputandtheexecutingagency,drivingthecorrespondingpartofthedieselengine,dieselengineoperatingconditionstoachievethebest.dieselenginewiththepastverydifferentfromthestatusquo.Moderndieselenginesgenerallyuseelectriccontrolledinjection,highpressurecommonrail,turbo-chargedinthecoldtechnology,intermsofweight,noise,smoke,etc.hasmadeamajorbreakthrough,reachingthelevelofgasoline.Withtheincreasinglystringentinternationalemissioncontrolstandards(suchasEurope,Ⅳ,Ⅴstandard)thepromulgationandimplementation,whetheritisgasolineordieselenginesarefacedwithseverechallenges,thesolutionistheuseofelectronicallycontrolledfuelinjectiontechnology.Now,thedieselengineelectroniccontroltechnologydevelopedattheapplicationratehasreachedmorethan60%.柴油机电子控制技术的发展状况柴油机电子控制技术始于20世纪70年代，20世纪80年代以来，英国