新概念汽车实用英语 教学课件 作者 毛矛 新概念汽车实用英语U5.ppt

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1、新概念汽车实用英语UNITFIVE1WORDSANDPHRASESintersect[,intə'sekt]v.贯穿；相交；交叉rack-and-pinion齿轮齿条2WORDSANDPHRASESrecirculating-ball循环球gearset齿轮组3WORDSANDPHRASESprotrude[prə'tru:d]v.伸出；突出tierod拉杆4WORDSANDPHRASESpiniongear小齿轮steeringshaft转向轴5WORDSANDPHRASESspindle['spindl]n.主轴；纺锤体to

2、othpitch齿距；齿节6WORDSANDPHRASESwormgear蜗轮；蜗轮蜗杆传动装置threadedhole螺纹孔7WORDSANDPHRASESengage[in'geidʒ]v.啮合；预定；雇佣；订婚pitmanarm转向垂臂；转向摇臂8WORDSANDPHRASESthreadedrod螺杆ballbearing滚珠轴承9WORDSANDPHRASESslop[slɔp]v.溢出；溅出vane[vein]n.风向标；叶片10WORDSANDPHRASESrotary-vanepump回转式叶轮泵retracta

3、ble[ri'træktəbl]a.可缩回的；伸缩自如的；可取消的11WORDSANDPHRASESrotaryvalve回转阀spool[spu:l]n.线轴12WORDSANDPHRASESspoolvalve滑阀；阀芯onewayortheother不管怎样；设法；以这样或那样的方式13WORDSANDPHRASESport[pɔ:t]n.端口；港口onthedrawingboard在设计阶段；在筹划之中14WORDSANDPHRASESsteer-by-wire线控转向；线控驾驶freeup空出来15WORDSANDPH

4、RASESconfigure[kən'figə]v.配置distinct[dis'tiŋkt]a.独特的；明显的；清楚的16TEXT：CARSTEERINGTurningtheCarYoumightbesurprisedtofindthatwhenyouturnyourcar,thecar’sfrontwheelsarenotpointinginthesamedirection.Foracarturningsmoothly,eachwheelshouldfollowadifferentcircle.17CARSTEERINGSi

5、ncetheinsidewheelisfollowingacirclewithasmallerradius,itisactuallymakingatighterturnthantheoutsidewheel.Ifyoudrawalineperpendiculartoeachwheel,thelineswillintersectatthecenterpointoftheturn.Thegeometryofthesteeringlinkagemakestheinsidewheelturnmorethantheoutsidewheel

6、.18CARSTEERINGThereareacoupledifferenttypesofsteeringgears.Themostcommonarerack-and-pinionandrecirculating-ball.1.Rack-and-pinionSteeringRack-and-pinionsteeringisquicklybecomingthemostcommontypeofsteeringoncars,smalltrucksandSUVs.19CARSTEERINGItisactuallyaprettysimpl

7、emechanism.Arack-and-piniongearsetisenclosedinametaltube,witheachendoftherackprotrudingfromthetube.Arod,whichiscalledatierod,connectstoeachendoftherack.20CARSTEERINGThepiniongearisattachedtothesteeringshaft.Whenthesteeringwheelisturned,thegearspinsandmovestherack.The

8、tierodateachendoftherackconnectstothesteeringarmonthespindle.21CARSTEERINGTherack-and-piniongearsetdoestwothings:(1)Itconvertsthero