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1、MediumcarservicenetworkHotspotsonthehomepage>Maintenance(1)ofthenewElysee16Venginecontrolsystemz，Carmaintenanceandmaintenance，z/YangtaoSincetheendof2002,shenlonghaslaunchedthenewdongfengCitroenElyseeluxuryplus(VIP),sport(VTS)andcomfort(SX)・Theseriesofcarswerefullyequippedwith1.6lite
2、rsTheTU5JP4engineofthe16-va.lvevalvegraduallyreplacestheoriginal1.6L8valveTU5JPengine・TU5JP4engineadoptsBOSCHcompany'slatestME7・4.4eficontrolsystem,thissystemisaccordingtotheforthcoming2005numberEuropeIVemissionregulationsandsystemdevelopmentanddesignofanewgenerationofems・Partofthen
3、ewElyseechoseME7.4.4system,itsmainismulti-pointinjection,cylinderfillingamountcontroltechnology,pressureloadtest,theelectronicthrottlecontrol,fuel1inewithoutreturnpipe,thesequentialinjection,detonationcontrol,threeyuancatalystsdiscriminantphaseandusingthesoftware,etc・Accordingtoourc
4、ountry'sfuelqualitycondition,wecanonlymeettheEUIIemissionstandards・Comparedwiththepreviousefisystem,ME7.4.4systemintroducedadvancedcenteredonthetorquecontrolstrategyandthemixtureofcoordinationmechanism,whichhasthefunctionofvariousphysicalmodelisestablishedandthesubsystem,youcanaddan
5、ewsubsystem,accordingtothevariationofvehicleequipmentmakeME7.4.4efisystemtoadapttoavarietyofdifferentlevelsofvehicleequipment・ThesystemalsoreservestheinterfacetotheCANnetwork,makingthewholecarcontrolsystemnetworkpossible・ComparedwithMP5.2efisystem,thesystemonhardwareincreasedalotofs
6、ensorsandcontrolcomponents,software,adoptedmanyadvancedcontrolmode,makethefunctionmoreadvanced,morepowerful.SystemcharacteristicsofME7.4.4ME7.4.4systemprincipleasshowninfigure1,inwhichtheacceleratorpedalpositionsensor,electricthrottlebodyisnotfoundinMP5・2system,inlettemperatureandin
7、letpressuresensor,oilpumpandfuelpressureregulatorrespectivelysynthesizedone,toreducethereturnpipeintheoilsupplyline.ME7・4.4systemisasetofmanifoldinjectionsystem,integratestheelectronicthrottlecontrol,controlobjectforairandfuelandignitionAngle,centeredonthephysicalmodelofthetorquecon
8、trolparameterandint
