离合器外文翻译

7DiscussionontheDevelopmentalSituationofDCTAutomaticTransmissionLINZhi-qiang(Heilon自i锄gkngshiTourMobileserveCo．，Ltd．，Harbin150090)Abstract:ThispaperintroducesthedualclutchautomatictransmissionDualclutchTransmission(DCT)developmentandapplicationstatusathomeandabroad.Theworkingprinciple,structurecharacteristicswereanalyzed,theDCTmanualtransmissionefficiencyhighcharacteristicandhydraulicpowershiftautomatictransmission,transmissionisChina'smostpromising.Keywords:dualclutch/automatictransmissionThecarisaunitycomposedofmultisystem.Thetransmissionsystemisoneofthekeyautosystems,andimprovethedegreeofgoodorbadperformance,playsadecisiveroleintheautomobile'spowerperformance,economy,comfortandreliability.Automobiletransmissionsystemtechnologyisgraduallydevelopedfrommanualtoautomaticgearshift,especiallytheapplicationofcomputertechnologyintransmissionsystem,automatictransmissiontechnologyhasbeenrapiddevelopment.Themodernautomobiletransmissionmainlyhasfourtypes:electronicautomaticmechanicaltransmission(AMT),continuouslyvariabletransmission(CVT),hydraulicmechanicalautomatictransmission(AT)anddualclutchautomatictransmission(DCT),theyallhavedifferentperformancecharacteristics.ATandcVTnopowerinterruptionwhenshiftinggear,withgoodquality,butthemechanicalefficiencyislow,leadingtopoorfueleconomyvehicles;mechanicalefficiencyofAMTishigh,butwhentheshifttointerruptthepowertransmission,shiftsmoothnessandaffectsthedynamicperformanceofthevehicle;DCTinheritsthemanualtransmissionhightransmissionefficiency,compactinstallationspace,lightweight,8lowpriceandmanyotheradvantages,andthefullrealizationofthepowershiftshiftprocess,whichisintheprocessofshiftingtheuninterruptedpower,itisnotonlyforAMTisagreatprogress,butalsotoretaintheATandCVTshiftqualityisgood,soisthethedevelopmentdirectionofautomatictransmission.1.Development1.1.DevelopmentabroadThecoretechnologyofDCTonlyinUSABergWanner(BorgWarner)andtheGermanSchof(Schaemer)group.194years,DarmstadtuniversityprofessorRudolphFrankethefirsttoapplyforapatentDCT,thetransmissionhasbeentestedinthetruck.ThenPorschealsoinventedthedualclutchtransmissionisdedicatedtoracing(PDKPorscheDoppelKupplungen).However,atthattime,failedtoDCTtechnologywillbeputintomassproduction.IntwentiethCenturyattheendof90,VolkswagenandBergWarnertogethertheproductionofthefirstissuitableforlargebatchproductionandapplicationinthemainstreammodelsDCT.In2002,theapplicationofDCTintheVolkswagenGolfR32andAudirITI'.In2003,whichhaveextendedtogolfandothermodels.In2004,DCTinGermanyVolkswagenTourancarsforthefirsttimeandmatchedwiththeTDIdieselengine.By2006,withDCTmassmodelstotaled700000vehicles.In2007,Ferrari,Renoandothercompanieshavelaunchedtheirowncar,isacommonfeatureofallwithtransmissionsimilartoDCT.Accordingtotherelevantagenciesoftheprocessingfacilitiesandcustomerservicemarketresearchandanalysis,isexpectedto2015DCTshareintheEuropeantransmissionmarketsharereached29%,whileintheAsiaPacificandtheJapanesemarket,DCTsaleswillgrowrapidly,thenthesharewillreach13%.1.2.Domesticdevelopmentgeneralsituation9Atpresent,inthedevelopmentofChina'stransmissionshowedajumpchange,nowautomatictransmissionmainlybasedAT,Geely,ShanghaiVolkswagen,ShanghaiGMcarusingAT.ButwiththerapiddevelopmentofChina'sautomobileindustry,researchontheDCTaspectsofthecountryarepayingmoreandmoreattention.Inthenational863majorprojects,officiallyapprovedtodevelopcarofDCT,accordingtothenationalintegrationpolicy,therehavebeenanumberofenterprisestoactivelycooperatewithdomesticfamousuniversitiesandsomewell-knownenterprises,hasinvestedconsiderablehuman,materialandfinancialresources,itsR&Dteamismoreandmorebig.2.Thestructureandprincipleofdoubleclutchtransmission2.1.PrincipleAtpresentDCTproductsgenerallyhaveadualclutchofsingleshaftoutput,combinatorialdoubleclutchofsingleshaftoutputandthecombinationofdualclutchshaftoutputthreestructureforms,thecombinationofdualclutchtwooutputisthemosttypicalstructuresforthecurrentlyusedwidelyandstructure.ThenatureoftheseDCTproductsaretwosetsoftransmissionandtwoclutchesarecombinedtogether,whenonesetoftransmissionisintheworkingstateofanothersetoftransmissionidlingandqualifyingwilltransformshift,byswitchingthetwoclutchworkingstateofthetwosetsoftransmissionalternatelyintotheworkingstate,inordertorealizetheshifttransformation.Thatistosaywhenthegearrunningataspeedofthevehicleisconnectedwithaclutch,transmissioncontrolunitaccordingtotherelevantsensorsignaljudgmentisabouttoentertheworkconnectedwithanotherclutchofagear,thegearisnottotransmitpower,sothatthehydrauliccontrolvalveveryconvenienttocontroltheshiftactuator,preengagementthisshift,invehicleoperationtoshift,theclutchwillonlyneedtotransferpower,whileanotherclutch,thecarfollowingageardriving.Intheprocessofshifting,thepoweroftheengineis10constantlybeingtransferredtothewheel,gearshiftingprocesscompletedsuchaspoweruninterruptedshift,theshiftofautomatedmechanicaltransmission.2.2DualclutchsystemDualclutchsystematpresentcarDCTusedinclutchandwetclutchtwoforms.(1)Thewetclutch.Wetclutchwithcontrollableandbettercontrolquality,structu