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1、汽车发动机VVT技术与FSI技术AutomotiveengineVVTtechnologyandFSItechnicalanalysisAbstract:withtherapiddevelopmentofscienceandtechnology,thereappearalotofnewenginetechnology,VVT一IandFSIisoneofthemoststrikingtwo,thisarticlefromthetechnologyandtheuseofthetwonewtechnologywere
2、discussedthedevelopmentofthetwotechnologies,theemergenceofnewtechnologyhasreferencevalueforthefuture・Keywords:vvvt-i,FSI,variablevalve,internaljet,Toyota,VolkswagenRapiddevelopmentinrecentyears,amoderncarengine,newtechnologyconstantlyemerging,andapplicationof
3、drivethecarperformanceisimprovedsignificantly,oneofthefamousToyotaVVT-iandGermanFSI,herearesomebasicprincipleofthenewtechnologytodoasimpleintroduction.IntelligentvariablevalvetimingsystemInrecentyears,theproductionofToyotacars,mostlyequippedwithmarkedwiththew
4、ord〃VVT-1〃engine,throughthebusinesspromotion,manypeoplealreadyknowVVT-ithisnewword,butitsconcretecontentisunknown.VVTisabbreviations,fullnameisz,VariableValveTiming",inChinesemeans^VariableValveTiminasaresuItofelectroniccontrolunit(ECU)control,soToyotaupanice
5、Chinesenameiscalled"intelligentVariableValveTimingsystem・Thesystemmainlycontrolsthecamshaftofthevalve,andasma.11tailisthecodenamefortheEnglish"breath".Thesearetheliteralmeaningsofthevvt-i.IntakecamshaftVVT-iisakindofcontrolvalvetimingdevice,itbyadjustingtheCA
6、MAnglevalvetimingoptimization,soastoimproveonallenginespeedwithinthescopeofthepowerperformance,fueleconomyandreduceexhaustemissions・Thevvvt-isystemconsistsofsensors,ECUandCAMshafthydrauliccontrolvalvesandcontrollers・ECUtostorethebestvalvetimingparametervalues
7、,thecrankshaftpositionsensor,airintakemanifoldpressuresensor,throttlepositionsensor,watertemperaturesensorandthecamshaftpositionsensorsuchasfeedbackinformationcollectiontotheECUandcomparedwithpresetparametervaluecalculation,calculatethecorrectionparametersand
8、issueinstructionstocontrolthecamshafttiminghydrauliccontrolvalves,controlvalvesaccordingtothepositionofECUcommandcontrolmachineoilvalve,hydraulicfluidflowisalsochanging,theearlierandlater