汽车专业英语(幻灯片) chapter 5 suspension

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1、Review1:What’sthefunctionofSuspensionsystem?FlexiblyconnectthewheelstothebodyDeliverthepowerandmomentfromtheroadtothebodyDampoutthespringoscillationsquicklystabilizerbarcoilspringtrailingcontrolshockabsorbertierodThesuspensioncoversthearrangementusedtoconnectthewheelstothebody.

2、Thepurposeistopreventlargeshocks,causedbythewheelsstrikingbumpsintheroad,beingpassedtothevehicleoccupantsandcomponents;otherwisediscomfortanddamagewouldoccur.悬架是车架（车身）与车桥（车轮）之间一切连接传力装置的总称。其目的是防止车轮遇到路面不平产生的巨大冲击传给车内的货物和乘客；否则会产生不舒适的感觉和货物的损坏。Thesuspensionsystemhastwosubsystems－thef

3、rontsuspensionandtherearsuspension.Thefrontsuspensionismorecomplicatedthantherearsuspension.Thisisbecausethefrontwheelsmustmoveinseveraldifferentdirections.Thewheelsmustmoveupanddownwiththesuspensionandturnlefttorightwiththesteering.Sincethecargoesinthedirectioninwhichthefrontw

4、heelspoint,thealignmentofthefrontwheelsisimportant.悬架系统有两个子系统－前悬架和后悬架．前悬架比后悬架复杂．这是因为前轮需要在不同方向运动．车轮必须随悬架上下运动并随转向系统左右转动．因为汽车在前轮指向的方向上行驶，所以前轮定位很重要．Pooralignmentcanmakeacarpulltoonesideandstopthefrontwheelsfromreturningtothestraight-aheadpositionafteraturn.不正确的车轮定位参数会使汽车产生偏驶，阻止车轮在转

5、向后回到直线行驶位置。Review2:What’sthefunctionofFrontWheelAlignmentAngles?Camberistheinclinationofthewheelrelativetothelongitudinalvehicleplane,measuredinthetransverseplaneofthevehicle.Positivecambermeansthatthewheelsaretiltedfurtheroutatthetopthanatthebottom.PositivecamberNegativecamber

6、TypeoffrontwheelalignmentanglesToe-inspecifiesthedegreetowhichnon-parallelfrontwheelsareclosertogetheratthefrontthanattherear;measuredattheedgesoftherimsatthewheelcenterheight.S.A.I主销内倾SteeringAxisInclinationThekingpinangleistheinclinationofthesteeringaxis(kingpin)relativetothe

7、longitudinalplane,measuredinthetransverseplaneofthevehicle.PositivecasterγCaster主销倾角Casterisspecifiedastheanglebywhichthesteeringaxis(kingpinline)deviatesfromtheverticalwhenviewedfromtheside,orasthatdistanceontheroadsurfacebywhichthewheelcontactpointtrailsthepointatwhichanexten

8、sionofthesteeringaxismeetstheroadsurface.negativecaste