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1、浅谈汽车电控发动机起动故障的诊断与排除论文（Discussionondiagnosisandeliminationofstartingfaultofautomobileelectroniccontrolengine）DiagnosisandeliminationofstartingtroubleofautomobileelectroniccontrolengineSource:ChinesePaperDownloadCenter[10-07-2210:27:00]author:LiHuaeditor:stud
2、a090420Abstract:Thispaperanalyzesthefaultofautomobileelectroniccontrolenginewhichcannotstart,andpointsoutthemethodoffaultdiagnosisandtroubleshooting.Keywords:electronicallycontrolledengine;fault;diagnosis;elimination0IntroductionWiththedevelopmentofelectron
3、icallycontrolledfuelinjectiontechnologyandthecontinuousimprovementofthelevelofmaintenanceawareness,moderncarsareequippedwithelectronicallycontrolledcombustionsystemsWhenthevehicleoftheoilinjectionengineisrepaired,theengineelectroniccontrolunit(ECU)isdetecte
4、dbyafaultdiagnosisdevice,andtheengineisconnectedwiththeengineRepairaccordingtothefaultcodestoredinECU,mostofthemcanascertainthecauseandpositionofthefaultsmayoccur,torepairTheworkofthepeoplebringsgreatconvenience.Usingdataflowtodiagnosethefaultsofelectronica
5、llycontrolledengine,firstofall,weshouldlayagoodtheoreticalfoundationWhenyoufindfault,youwillfindoutthemainsourceoftheproblemandanalyzeit.Thenyoushouldunderstandthemanifestationofeachsensordata.CombinationExamplesofmaintenanceinactualmaintenancework,anddiscu
6、ssestheexperienceofusingelectriccurrentsystemtodiagnosefaultsofelectriccontrolsystem.1usestaticdataflowtoanalyzefaultsStaticdataflowreferstotheengineelectriccontrolsystemwhichisconnectedwiththeignitionswitchanddoesnotstarttheengineUnifieddata.Forexample,the
7、staticdataoftheintakepressuresensorshouldbeclosetothestandardatmosphericpressure(100-102kPa);thecoolanttemperatureThestaticdataofthesensorshouldbeclosetotheenvironmenttemperaturewhenthevehicleiscool.HereisarealdiagnosisusingstaticdataflowExample:thefaultphe
8、nomenon:aJettacar,afterthewinterinthemorningcannotstart.Examinationandjudgment:first,askDiagnosis,theownerreflects:afewdaysagothemorningisverydifficulttostart,andsometimesafteralongtimecanstartup,start
