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1、外文翻译AutoTransmissionFirst,anoverviewofautomotivetransmissionandthedevelopmenttrendAutomobileavailablemorethanacentury,especiallyfromthemassproductionofmotorvehiclesandtheautomotiveindustrysincethedevelopmentoflarge,Carhasbeentheeconomicdevelopmentoftheworldformankindtoente
2、rthemodernlifeandhavehadatremendousimpactontheimmeasurable,Theprogressofhumansocietyhasmadeindeliblecontributionstothegreat,epoch-makingsetoffarevolution.FromFromthevehicleasapowerplantusinginternalcombustionenginetostart,autotransmissionhasbecomeanimportantcomponent.IsGen
3、erationiswidelyusedinautomotivereciprocatingpistoninternalcombustionenginewithasmallsize,lightweight,reliableoperationandtheuseofTheadvantagesofconvenience,butitstorqueandspeedrangeofsmallerchanges,andcomplexconditionrequirestheuseofmotorvehiclesTractionandthespeedcanbecon
4、siderablechangesinthescope.Therefore,itsperformanceandvehicledynamicsandeconomyofTherearelargeinter-contradictions,whichcontradictionsofmodernautomotiveinternalcombustionenginebyitselfisinsoluble.BecauseHere,intheautomotivepowertrainsetupthetransmissionandmainreducerinorde
5、rtoachievethepurposeofdecelerationbymoment.SpeedThemainfunctionofperformance:⑴changegearratioofmotorvehicles,andexpandthewheeldrivetorqueandrotationalspeedoftheFanWai,inordertoadapttoconstantlychangingdrivingcycle,whiletheengineinthemostfavorableconditionswithinthescopeofw
6、ork;⑵nochangeinthedirectionofenginerotation,underthepremiseoftherealizationofcarsdrivingback;⑶therealizationofthefree,temporaryInterruptionofpowertransmission,inordertobeabletostarttheengine,idling,etc..Variable-speeddrivetransmissionbythemanipulationofinstitutionsandagenc
7、ies.ChangethetransmissionratiobywayoftransmissionisdividedintoThereareclass-type,non-stageandmulti-purposethree.Haveclassmostwidelyusedtransmission.Itusesgeardrive,withanumberoftransmissionratiosetting.SteplesstransmissionContinuouslyVariableTransmission(CVT)transmissionra
8、tioofacertainTheframeworkofmulti-levelchangesmaybeunlimited,thereisacommontypeofpowerandt
