汽车专业英语精4ppt课件

Project4Thechassiscomponents,东北大学出版社,.,2,改革创新示范教材,Project4Thechassiscomponents,掌握底盘组成及其传动系统、行驶系统、转向系统和制动系统的结构特点；掌握这些系统主要部件的的专业术语表达理解手动变速器和自动变速器的区别，了解车轮定位，ABS、ESP相关知识。,知识目标,能读懂底盘传动系统、行驶系统、转向系统和制动系统的相关英文材料能熟记离合器、变速器、传动轴、差速器、主减速器、车架、车桥、车轮、悬架、转向器、制动器，ABS、ESP等关键零部件及其组成的相关专业词汇、术语能看图写出零件名称;,能力目标,.,3,改革创新示范教材,Task1Thetransmissionsystem,1.Newwordsandexpressions,hydraulichadr:lkadj.液力的、液压的differential,dfrenln.差异,差速器；adj.不同的、有分别的engagementineidmntn.订婚、婚约；约会、约定;结合,连接releaserili:svt.释放、放开、发布；n.释放、排放、解除forkf:kn.餐叉、耙子、叉；vi.分叉reverseriv:svt.安定翼alignmentlanmntn.排成直线，校准bearbvt.妨碍;阻止使(点火)延迟brakebreikn.制动器、刹车vt.静止的lininglann.内衬,膜anchorkn.锚vt.&vi.(把)系住,(使)固定flangeflndn.(机械等的)凸缘retractrtrktvt.&vi.撤回或撤消、拉回padpdvt.给装衬垫,加垫子,n.垫块,.,改革创新示范教材,29,Task4Thebrakingsystem,squeezeskwi:zvt.过分地lockup,lkpn.锁住monitormnitn.监视器,监听器vt.监听,监视analyzenlaizvt.分析,分解,解释mastercylinder主缸,主油缸,制动缸brakedrum制动鼓servicebrake行车制动器parkingbrake驻车制动器drumbrake鼓式制动器discbrake盘式制动器adjustableconnector可调接头caliper测径器,卡钳,弯脚器,制动钳anti-lockbrakingsystem防抱死制动系统(ABS)electronicstabilityprogram汽车电子稳定系统(ESP)AccelerationSlipRegulation驱动防滑系统(ASR),.,改革创新示范教材,30,Thebrakingsystem,任务实施,Thebrakingsystemisveryimportanttoavehicle.Itsprincipleistoutilizethefrictionbetweenarevolvingpartconnectedtothewheelandanon-revolvingoneconnectedtotheframetoretardthemotionofthevehicle.Abrakesystemiscomposedofthebrakeanditscontrolmechanism,includingsuchmajorpartsasbrakedisk(ordrum),shoe,mastercylinder,pedal,brakeline,hose,etc.(showninthefigure4.4.1).Brakesarelocatedateachwheel.Thebrakepedalisconnectedtoaplungerinamastercylinder,whichisfilledwithhydraulicfluid.Whenthebrakepedalisdepressed,theforceisincreasedbythemastercylinderandtransferredthroughbrakehosesandlinestothefourbrakeassemblies.Therearetwokindsofindependentbrakingsystem.Boththeservicebrakeandparkingbrakeareindispensableforslowingorstoppingthevehicle.Theservicebrakewillbeputintoeffectwhenthedriverneedstoslowandstoptheautomobile.Itcanslowdownorevenstopthecarthatisrunningatahighspeedandmakesurethesafetyofpassengers.,.,改革创新示范教材,31,Thesteeringsystem,任务实施,.,改革创新示范教材,32,Thesteeringsystem,任务实施,Onthecontrary,theparkingbrakewillplayarolewhenitparks.Itcanpreventtheautoslippingawayfromitsparkingplace,evenifitisparkedonasteepslope.Theparkingbrake(shownasthefigure4.4.2)ismechanicallyoperatedbythedriverwhenaseparateparkingbrakinghandleisset.Whenneedingparking,thedrivemaypullthehandleuptotensetheropeviathebalancelever.Thiswillurgetherearbrakework.Thehandbrakeisnormallyusedonlywhenthecarhasalreadystopped.Aleverispulledandtherearbrakesareappliedandlockedintheonposition.So,thecarmaynowbeleft,beingnotafraidofitsrollingaway.Whenhewantstomovethecaragain,thedrivermustpressabuttonbeforethelevercanbereleased.Thehandbrakeisalsoabletohelpstopthecarintheeventofthefootbrakefailing.Twotypesofbrakesareusedonautomobiles:drumbrakesanddiscbrakes(shownasthefigure4.4.3).Manyautomobilesuseacombinationofthetwotypes:discbrakesatthefrontwheelsanddrumbrakesattherearwheels.,.,改革创新示范教材,33,Thesteeringsystem,任务实施,.,改革创新示范教材,34,Thesteeringsystem,任务实施,Thedrumbrakecomprisesadrum,anexpander,pullbacksprings,astationarybackplate,twoshoeswithfrictionlinings,andanchorpins.Thestationarybackplateissecuredtotheflangeoftheaxlehousingortothesteeringknuckle.Thebrakedrumismountedonthewheelhub.Thereisaclearancebetweentheinnersurfaceofthedrumandtheshoelining.Whenbraking,thedriverpushespedal,theexpanderexpandstheshoesandthenpressesthemtothedrum.Frictionbetweenthebrakedrumandthefrictionliningsbrakesthewheelssothatthevehiclecouldstop.Whenreleasingbrakes,thedriverreleasethepedal,thepullbackspringretractstheshoesthuspermittingfreerotationofthewheels.Thediscbrakehasametaldiskinsteadofadrum.Aflatshoe,ordisk-brakepadinacaliper,islocatedoneachsideofthedisk.Theshoessqueezetherotatingdisktostopthecar.Fluidfromthemastercylinderforcesthepi