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1、AbstractAbstractAsanewtypetransmission,DCT(DualClutchTransmission)combinestheadvantagesofAMTandAT.AstheabbreviationofAutomaticManualTransmission,AMThasthetraitsofhighefficiency,simplestructure,excellenttechnologyinheritance,lowmanufacturecost.Whereasastheabbreviationof
2、AutomaticTransmission,AThasthetraitsofpower-shift.Forthesereasons,DCThashighqualityofshift,fantasticpowerperformanceandfuel-economy,whichisespeciallyavailableforthemarketsinwhichmanualtransmissiontakesthedominantrole.ItcanimproveourR&Dabilityontheautomobilecomponentsan
3、dpromotethedevelopmentofautomatictransmissionindustryforustostudytheprocessofengagementaswellasthecontrolstrategyofshift.FundedbyChongqingMunicipalEducationCommission(projectNO:KJ080619),inthispaper,anAMESimmodelforthesimulationisestablishedandthepowershiftofDCTisstudi
4、ed,thehydraulicpressuretraitsoftheclutchduringtheprocessofshiftoverlapareobtained,andshiftscheduleofDCTisworkedout.Themainresearchincludes:(1)BasedontheanalysisofdynamicmodelofDCT,powershiftsimulationmodelhasbeensetupusingAMESim.Thissimulationmodelnotonlyestablishesasi
5、mulationplatformforfurtherresearchingcomprehensivecontrolstrategybetweentwoclutchesandengineduringshiftingprocess,butalsolaysafoundationforcuttingdowncontrolsystemdevelopmentcycleofDCT.(2)TheshiftprocessofDCTissimulatedbasedontheAMESimsimulationmodel.Somevaluableconclu
6、sionsareobtainedbyanalyzingtherelationshipbetweenthehydraulicpressureofclutchduringtheshiftprocessandthreeparameter(lagtime,startandendpressureandslopeofpositivepressure)byusingthesimulationresults.Basedontheaboveresults,theconclusionthattheslopeofpositivepressureisthe
7、keyfactorinfluencingthejerkandslippingworkthroughOrthogonalDistributingDesignofExperiments(DOE).Finallythemethodofcontrollingtheslopeofpositivepressureispresentedbyreducingslippingtimeandwork.(3)Basedontheanalysisofacar’senginemap,thefuelconsumptionofconstantspeed100ki
8、lometerswasobtaineddirectlythroughthetransformationofcar’senginemapbyMATLAB.Throughthismethod,thecomputingprocessissi
