Unit 1 汽车专业英语(车辆的种类、汽车基本结构)

Unitone

AutomobileBasicsContentsPre-questionsII.Text

ExplanationIII.ExercisesTypesofModernAutomobiles1）cars

2）passengercars3）trucks4）tractorsandvehiclecombination5）specialtypevehicle6）Self-dumpingcar7）farmvehicle8)off-roadvehicle

Pre-questionsSpecialvehicle

carTractorTruck

PassengerCars

2、withrespecttoenginearrangementanddrivingtypeenginearrangementanddrivingtypediagramfrontengine

、front-wheeldrive

frontengine

、rear-wheeldriveRearengine、

rear-wheeldrivePre-questionsDoyouknowwhobuiltthefirstcarintheworldandwhen?KarlBenzIn1886Pre-questionsHowmanymainpartsdoestheautomobileconsistof?1-engine2-chassis3-body4--electricalsystemPre-questionsNewWordsandNewWordsandExpressions

component[kəm'pəunənt]n.成分，组成，部件，零件chassis['∫æsi]n.底盘transmission[trænz'mi∫ən]n.变速器，传动,传动系统，传送，发射ignite[ig'nait]v.点火,点燃suspension[səs'pen∫ən]n.悬架，悬挂NewWordsandNewWordsandExpressions

spark-ignitionengine点燃式发动机compression-ignitionengine压燃式发动机storagebattery蓄电池ignitioncoil点火线圈powertrain传动系，动力装置propellershaft传动轴(=driveshaft)SectionATheBasicComponentsofanAutomobile

Today'saveragecarcontainsmorethan15,000separate,individualpartsthatmustworktogether.Thesepartscanbegroupedintofourmajorcategories:engine,body,chassisandelectricalequipments.Engine

Theengineactsasthepowerunit.Theinternalcombustionengineismostcommon:thisobtainsitspowerbyburningaliquidfuelinsidetheenginecylinder.Therearetwotypesofengine:gasoline(alsocalledaspark-ignitionengine)anddiesel(alsocalledacompression-ignitionengine).Bothenginesarecalledheatengines;theburningfuelgeneratesheatwhichcausesthegasinsidethecylindertoincreaseitspressureandsupplypowertorotateashaftconnectedtothetransmission.ChassisThechassisisanassemblyofthosesystemsthatarethemajoroperatingpartsofavehicle.Thechassisincludesthepowertrain,suspension,steering,andbrakesystems.BodyAnautomobilebodyisasheetmetalshellwithwindows,doors,ahood,andatrunkdeckbuiltintoit.Itprovidesaprotectivecoveringfortheengine,passengers,andcargo.Thebodyisdesignedtokeeppassengerssafeandcomfortable.ElectricalEquipmentTheelectricalsystemsupplieselectricityfortheignition,horn,lights,heater,andstarter.Theelectricitylevelismaintainedbyachargingcircuit.Thiscircuitconsistsofabattery,andanalternator(orgenerator).Thebatterystoreselectricity.Thealternatorchangestheengine'smechanicalenergyintoelectricalenergyandrechargesthebattery.Whichiscalledthe“heart”ofautomobile?AnenginethatisusedtosupplypowerforanautomobileWhatisthechassiscomposedof?Powertrain,suspension,steeringsystemandbrakesystem.

QuestionsPowertrainsystemBrakesystemSteeringsystemSuspensionsystemPre-questionsWhatistheelectricalsystemcomposedof?Theelectricsystemincludesthebattery,generator,startingsystem,ignitionsystem,lightingsystem,hornsystem,radioandotherdevices.Pre-questionsWhatarethefunctionsofthefoursystems?Drivingsystem

worksbytransmittingenginepowertothedrivingwheels.Suspensionsystem’sfunctionistoincreasestrengthanddurabilityofcomponentsandtomeetcustomers’requirementsforridingcomfortanddrivingsafety.Steeringsystemisusedtocontrolthedrivingdirectionofanautomobile.

Brakesystemisusedtoretardthemotionofthevehicle.

QuestionsSectionCReadingAnautomobileormotorcar(usuallyshortenedtojustcar)isawheeledpassengervehiclethatcarriesitsownengineormotor.Mostdefinitionsofitspecifythatautomobilesaredesignedtorunonroads,tohaveseatingforonetoeightpeople,totypicallyhavefourwheels,andtobeconstructedforthetransportofpeopleorgoods.However,thedefinitionisnotprecisebecausetherearemanytypesofvehiclesthatdosimilartasks.Inotherwords,anyautomobileiscomposedofthesectionssuchasengine,chassis,bodyandelectricsystem.Inotherwords换句话说becomposedof由….组成

译文：换句话说，任何一辆汽车都是由发动机、底盘、车身和电器设备组成的。

II.TextExplanationInotherwords

Inotherwords,theyremainrelativelyconstantorstatic.

换句话说，它们相对的稳定、静止。

Inotherwords,wehaveadheredtoscientificsocialism.

也就是说，我们坚持了科学社会主义。

becomposedofNavymustbecomposedofsurfaceshipunitandsubmarineunit.

海军一定是由水面舰艇部队和潜艇部队组成。II.TextExplanationIII.ExercisesTranslatethefollowingexpressionsintoChinese.chassisdrivingsysteminternalcombustionenginesteeringsystembrakingsystempropellershaftGeneratorTransmissionIgnitioncoilSuspensionEngineComponentStoragebattery底盘传动系统内燃机转向系统制动系统传动轴发电机变速器点火线圈悬挂发动机零件蓄电池IdentifytheEnglishnamesofchassisaccordingtothepicture.III.Exercisesengine;clutch(离合器）;transmission;propellershaft;differential（差速器）;rearaxle（后轴）I.TranslatethefollowingsentencesintoChinese.Ineffect,thedrivingsystemworksbytransmittingenginepowertothedrivingwheels.实际上，传动系统的作用是将发动机的动力传递到驱动车轮。Theelectricsystemsupplieslightinganddrivingpowerfortheautomobile.电气系统可为汽车提供照明和驱动的电力。Thebodystylingprovidesanattractive,colorful,modernappearancefo