外文翻译汽车变速器设计.docx

外文翻译汽车变速器设计.docx

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外文翻译汽车变速器设计

附录

Transmissiondesign

Asweallknowautomobileenginetoacertainspeedcanbeachievedunderthebestconditions,whencomparedissuedbythepower,fueleconomyisrelativelygood.Therefore,wehopethattheengineisalwaysinthebestofconditionstoworkunder.However,theuseofmotorvehiclesneedtohavedifferentspeeds,thuscreatingaconflict.Transmissionthroughthisconflicttoresolve.

AutomotiveTransmissionrolesumupinonesentence,calledvariablespeedtwisting,twistingorslowdownthegrowthratebyincreasingtorsional.Whycanslowdownbytwisting,andthegrowthratebutalsobytwisting?

Forthesameenginepoweroutput,powercanbeexpressedasN=WT,wherewistheangularvelocityofrotation.WhenNfixed,wandTisinverselyproportionaltothe.Therefore,thegrowthratewillreducetwisting,twistingslowdownwillincrease.AutomotiveTransmissionspeedgearbasedontheprincipleofvariabletwistedintovariousstallsofdifferenttransmissionratiocorrespondingtoadapttodifferentoperationalconditions.

Generaltosetupamanualgearboxinputshaft,intermediateshaftandoutputshaft,alsoknownasthethree-axis,aswellasDaodangaxis.Three-axisisthemaintransmissionstructure,inputshaftspeedisthespeedoftheengine,theoutputshaftspeedistheintermediateshaftandoutputshaftgearmeshingbetweendifferentfromthespeed.Differentgearsaredifferenttransmissionratio,andwillhaveadifferentspeed.ForexampleZhengzhourichanZN6481W2Gmanualtransmissioncar-SUV,itstransmissionratioare:

1File3.704:

1;stalls2.202:

1;stalls1.414:

1;stalls1:

15stalls（speedingfile）0.802:

1.

Whendriverschoosealaunchvehiclestalls,Plectrumwillbe1/2filesynchronizationengagementwithabackstallgearandoutputshaftlockit,thepowerinputshaft,intermediateshaftandoutputshaftgearofastall,astalltheoutputshaftgeardriven,andtheoutputshaftpowerwillbetransmittedtothedriveshaft（redarrow）.AtypicalstallBiansuchiluntransmissionratiois3:

1,thatistosaythreelapstotheinputshaftandoutputshafttoacircle.

Whenthegrowthrateofcardriverschoosetwostalls,Plectrumwillbe1/2-filesynchronizationandfileajointseparationafter2stallandlocktheoutputshaftgear,powertransmissionlinesimilar,thedifferenceisthattheoutputshaftgearofastall2stallreplacedbytheoutputshaftgeardriven.2stallBiansuchiluntypicaltransmissionratiois2.2:

1,2.2lapstotheinputshaftandoutputshafttoacirclethanastallspeedincrease,lowertorque.

Whenrefuelingvehicledriversgrowthstallsoption3,Plectrumto1/2backtothefreefile-synchronizationposition,andalsoallowsthe3/4filesynchronizationMobilestalluntil3intheoutputshaftgearlock,powercanbeintotheshaftaxis-intermediateshaft-theoutputshaftofthethreestallsBiansuchilun,ledthroughthreestallsBiansuchilunoutputshaft.3stallstypicaltransmissionratiois1.7:

1,1.7lapstotheinputshaftandoutputshafttoacircleisfurthergrowth.

WhencardriversOption4refuelinggrowthstalls,Plectrumwillbe3/4fromthe3-filesynchronizationstallgeardirectlywiththeinputshaftgearjointinitiative,andpowertransmissiondirectlyfromtheinputshafttotheoutputshaft,thetransmissionratioat1:

1,thattheinputshaftandoutputshaftspeedthesame.Thedrivingforcewithoutintermediateshaft,alsoknownasdirectfile,thefiletransmissionthanthemaximumtransmissionefficiency.Mostcarsrun-timefilesareuseddirectlytoachievethebestfueleconomy.

Shiftintothefirstintervalwhen,inafreetransmissionwhenBiansuchilunoutputshaftisnotlockedin,theycannotrotatetheoutputshaftdriven,notpoweroutput.

Generalautomotivemanualtransmissionthanthemain1-4stalls,usuallythefirstdesignerstodeterminetheminimum（onestall）andmaximum（4files）transmissionratio,themiddlestalldrivebygeometricprogressionthanthegeneraldistribution.Inaddition,therearestallsDaodangandspeeding,speedingfileisalsoknownasthefivestalls.

Whenthecartoacceleratetomorethancardriverswiththechoiceoffivestalls,andatypicalfive-transmissionratiois0.87:

1,whichisdrivenbyapiniongear,thegearwhentheinitiativeto0.87zone,passivegearhavebeentransferredtoacircleoftheEnd.

DaoDang,theoppositedirectiontotheoutputshaftrotation.Ifonepairofmeshinggearswhenwereverserotation,withamiddlegear,itwillbecomethesametotherotation.Useofthisprinciple,weshouldaddagearDaodangthe"media"willberotationaldirectionreversed,itwillhaveaDaodangaxis.Daodanginstalledinthetransmissionshaftindependentcrust,andtheintermediateshaftparallelaxisgearwiththeintermediateshaftandoutputshaftgearmeshinggears,willbecontrarytotheoutputshaft.

Daodangusuallyusedforthesynchronizationcontrolalsojoinsfivestalls,stallsandDaodang5positioninthesameside.Asamiddlegear,thegeneraltransmissionDaodangtransmissionratiogreaterthan1filetransmissionratio,bytwisting,steepslopewithsomevehiclesencounteredontheprogressstallsfalterswithaDaodangboost.

Ridefromthedriveroftheconsiderations,bettertransmissionstall,stalladjacentstallmorethanthetransmissionchangestheratioofsmall,andeasytoshiftsmoothly.However,theshortcomingsofthestallsismoretransmissionstructureiscomplicated,bulky,lightvehicletransmissionisgenerally4-5stalls.Atthesametime,transmissionratioisnotintegral,butwithallofthedecimalpoint,itisbecauseofthegearteethmeshingisnotcausedbythewholemultiplesoftwogearteethcanleadtothewholemultiplesoftwomeshinggearsofunevenwear,makingthetoothsurfacequalityhaveagreaterdifference.

Manualtransmissionandsynchronizer

Manualtransmissionisthemostcommontransmission,orMT.Itsbasicstructuresumupinonesentence,isatwo-axleshaft,whereinputshaft,theshaftaxisandintermediateshaft,whichconstitutethemainbodyofthetransmissionand,ofcourse,aDaodangaxis.Manualtransmissionknownasmanualgeartransmission,whichcanbeintheaxialslidinggears,thegearsmeshingdifferentvariablespeedreachedtwistingpurpose.Typicalmanualtransmissionstructureandprinciplesareasfollows.

Inputshaftalsosaidthatthefirstaxis,anditsfront-endsplinedrivendirectlywiththeclutchdiscsetswiththespline,bythetransferoftorquefromtheengine.Thefirstaxisoftheintermediateshaftandgearsmeshinggearsoften,aslongastheshaftaxistoaturn,theintermediateshaftandgearalsowillberotating.Vicealsosaidintermediateshaftaxis,theaxis-evenmorethanthesizegear.Alsoknownasthesecondoutputshaftaxis,theaxisofvarioussetsofgearstallprogresscanbemanipulatedatanytimeintheroleofthedeviceandthecorrespondingintermediateshaftgearmeshing,thuschangingitsspeedandtorque.Withtheendoftheoutputshaftsplineassociatedwiththedriveshaftthroughthedriveshafttorquetransmittedtothedriveaxlereducer.

Thus,progressstallsdrivetransmissionpathis:

inputshaftgearoftenrodents-oftenrodentsintermediateshaftgear-correspondingintermediateshaftgear-thesecondaxiscorrespondinggear.Reversingthegearshaftcanbemanipulatedbythedevicepickintheaxismovement,andtheintermediateshaftandoutputshaftgearmeshinggears,tothecontrarytothedirectionofrotationoutput.

MostcarshavefivestallsandaDaodangforward,acertaindegreeofeachstalltransmissionratio,themajorityofstallstransmissionratiogreaterthan1,4filetransmissionratioof1,knownasdirectstalls,andtransmissionratioislessthan1No.5stallcalledacceleratedstall.Freeattheoutputshaftgearinapositionofnon-engagement,unacceptablepowertransmission.

Thetransmissioninputshaftandoutputshaftrotationalspeedtotheirown,transformastallwhenthereisa"synchronous".Twodifferentrotationalspeedgearmeshingforcewillimpactthecollisionoccurred,damagegear.Therefore,theoldtransmissionshifttoa"feet-off"approach,orstallonthelocationofthefreestayforawhilebystallsinthefreepositionrefuelingdoors,inordertoreducethespeeddifferentialgear.However,thisoperationisrelativelymorecomplicatedanddifficulttograspaccurate.Sodesignerscreatea"synchronized,"andallowssynchronizationthroughthemeshingofgearstobeconsistentspeedandsmoothmeshing.

AtpresentSynchronousTransmissionisbasedonthesynchronizationofinertia,mainlyfromjointsets,synchronouslockring,andsoon,itischaracterizedbyfrictionontheroleofsynchronization.SplicesetsGenlockengagementringgearandtheringgearwhenithadChamfer（Lockangle）,Genlockwithintheconeringgearengagementwiththequestionofconeringgearcontactfriction.LockandconeanglehasbeenmadeinthedesignofanappropriatechoicetobemadefrictionconeoftheteethmeshingwiththeringgearquicklysetspaceatthesametimewillhaveaLockroleandtopreventthegearsmeshinginsyncbefore.Whensynchronizationlockconeringgearengagementwiththequestionofconeringgearaftercontactintheeffectsoffrictiontorquegearspeedquicklylower（orhigher）withthesamespeedsynchronouslockring,thetwosynchronousrotationofthegearGenlockCentralzerospeed,thusmomentofinertiaalsodisappear,theninforceundertheimpetusofengagementsetsunhinderedandsynchronizationlockringgearengagement,andfurtherengagementwiththequestionofgearengagementandthecompletionGearShiftProcess.

Theautomaticgear