Unit1汽车专业英语车辆的种类汽车基本结构课件

Unitone

AutomobileBasicsUnitone

AutomobileBasics1ContentsPre-questionsII.Text

ExplanationIII.ExercisesContentsPre-questionsII.Text2TypesofModernAutomobiles1）cars

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

Pre-questionsTypesofModernAutomobilesPre3Specialvehicle

carTractorTruck

PassengerCars

SpecialvehiclecarTractorTru42、withrespecttoenginearrangementanddrivingtypeenginearrangementanddrivingtypediagramfrontengine

、front-wheeldrive

frontengine

、rear-wheeldriveRearengine、

rear-wheeldrivePre-questions2、withrespecttoenginearran5Doyouknowwhobuiltthefirstcarintheworldandwhen?KarlBenzIn1886Pre-questionsDoyouknowwhobuiltthefirs6Howmanymainpartsdoestheautomobileconsistof?1-engine2-chassis3-body4--electricalsystemPre-questionsHowmanymainpartsdoesthe7NewWordsandNewWordsandExpressions

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NewWordsandNewWordsandE8NewWordsandNewWordsandExpressions

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)NewWordsandNewWordsandE9SectionATheBasicComponentsofanAutomobile

Today'saveragecarcontainsmorethan15,000separate,individualpartsthatmustworktogether.Thesepartscanbegroupedintofourmajorcategories:engine,body,chassisandelectricalequipments.SectionATheBasicComponent10Engine

Theengineactsasthepowerunit.Theinternalcombustionengineismostcommon:thisobtainsitspowerbyburningaliquidfuelinsidetheenginecylinder.Therearetwotypesofengine:gasoline(alsocalledaspark-ignitionengine)anddiesel(alsocalledacompression-ignitionengine).Bothenginesarecalledheatengines;theburningfuelgeneratesheatwhichcausesthegasinsidethecylindertoincreaseitspressureandsupplypowertorotateashaftconnectedtothetransmission.Engine11ChassisThechassisisanassemblyofthosesystemsthatarethemajoroperatingpartsofavehicle.Thechassisincludesthepowertrain,suspension,steering,andbrakesystems.Chassis12BodyAnautomobilebodyisasheetmetalshellwithwindows,doors,ahood,andatrunkdeckbuiltintoit.Itprovidesaprotectivecoveringfortheengine,passengers,andcargo.Thebodyisdesignedtokeeppassengerssafeandcomfortable.Body13ElectricalEquipmentTheelectricalsystemsupplieselectricityfortheignition,horn,lights,heater,andstarter.Theelectricitylevelismaintainedbyachargingcircuit.Thiscircuitconsistsofabattery,andanalternator(orgenerator).Thebatterystoreselectricity.Thealternatorchangestheengine'smechanicalenergyintoelectricalenergyandrechargesthebattery.ElectricalEquipment14Whichiscalledthe“heart”ofautomobile?AnenginethatisusedtosupplypowerforanautomobileWhatisthechassiscomposedof?Powertrain,suspension,steeringsystemandbrakesystem.

QuestionsWhichiscalledthe“heart”o15PowertrainsystemBrakesystemSteeringsystemSuspensionsystemPre-questionsPowertrainsystemBrakeSteeri16Whatistheelectricalsystemcomposedof?Theelectricsystemincludesthebattery,generator,startingsystem,ignitionsystem,lightingsystem,hornsystem,radioandotherdevices.Pre-questionsWhatistheelectricalsystem17Whatarethefunctionsofthefoursystems?Drivingsystem

worksbytransmittingenginepowertothedrivingwheels.Suspensionsystem’sfunctionistoincreasestrengthanddurabilityofcomponentsandtomeetcustomers’requirementsforridingcomfortanddrivingsafety.Steeringsystemisusedtocontrolthedrivingdirectionofanautomobile.

Brakesystemisusedtoretardthemotionofthevehicle.

QuestionsWhatarethefunctionsofthe18SectionCReadingAnautomobileormotorcar(usuallyshortenedtojustcar)isawheeledpassengervehiclethatcarriesitsownengineormotor.Mostdefinitionsofitspecifythatautomobilesaredesignedtorunonroads,tohaveseatingforonetoeightpeople,totypicallyhavefourwheels,andtobeconstructedforthetransportofpeopleorgoods.However,thedefinitionisnotprecisebecausetherearemanytypesofvehiclesthatdosimilartasks.SectionCReadingAnautomobile19Inotherwords,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,anyautomobile20Inotherwords

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.TextExplanationInotherwordsII.TextEx21III.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III.ExercisesTransl22IdentifytheEnglishnamesofchassisaccordingtothepicture.III.Exercisesengine;clutch(离合器）;transmission;propellershaft;differential（差速器）;rearaxle（后轴）IdentifytheEnglishnamesof23I.TranslatethefollowingsentencesintoCh