外文翻译汽车差速器

《外文翻译汽车差速器》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。

1、FailureanalysisofanautomobiledifferentialpinionshaftAbstractDifferentialisusedtodecreasethespeedandtoprovidemomentincreasefortransmittingthemovementcomingfromtheenginetothewheelsbyturningitaccordingtothesuitableangleinvehiclesandtoprovidethatinnerandouterwheelsturndifferently

2、.Piniongearandshaftattheentrancearemanufacturedasasinglepartwhereastheyareindifferentformsaccordingtoautomobiletypes.Mirrorgearwhichwillworkwiththisgearshouldbecomefamiliarbeforetheassembly.Incaseofanybreakdown,theyshouldbechangedasapair.Generally,inthesesystemstherearewearda

3、magesingears.Thegearinspectedinthisstudyhasdamageasaformofshaftfracture.Inthisstudy,failureanalysisofthedifferentialpinionshaftiscarriedout.Mechanicalcharacteristicsofthematerialareobtainedfirst.Then,themicrostructureandchemicalcompositionsaredetermined.Somefractographicstudi

4、esarecarriedouttoassesthefatigueandfractureconditions.Keywords:Differential;Fracture;Powertransfer;Pinionshaft1.IntroductionThefinal-drivegearsmaybedirectlyorindirectlydrivenfromtheoutputgearingofthegearbox.Directlydrivenfinaldrivesareusedwhentheengineandtransmissionunitsarec

5、ombinedtogethertoformanintegralconstruction.Indirectlydrivenfinaldrivesareusedattherearofthevehiclebeingeithersprungandattachedtothebodystructureorunsprungandincorporatedintherear-axlecasing.Thefinal-drivegearsareusedinthetransmissionsystemforthefollowingreasons[1]:(a)toredir

6、ectthedrivefromthegearboxorpropellershaftthrough90°and,(b)toprovideapermanentgearreductionbetweentheengineandthedrivingroad-wheels.Invehicles,differentialisthemainpartwhichtransmitsthemovementcomingfromtheenginetothewheels.Onasmoothroad,themovementcomestobothwheelsevenly.Thei

7、nnerwheelshouldturnlessandtheouterwheelshouldturnmoretodotheturningwithoutlateralslippingandbeingflung.Differential,whichisgenerallyplacedinthemiddlepartoftherearbridge,consistsofpiniongear,mirrorgear,differentialbox,twoaxlegearandtwopinionspidergears.Aschematicillustrationof

8、adifferentialisgiveninFig.1.Thetechnicaldrawingofthefracturedpinions