车辆工程专业毕业论文外文翻译2

《车辆工程专业毕业论文外文翻译2》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、TRANSMISSIONOfalltransmissiontechnologies,themanualgearboxisthemostefficient;around96percentoftheenergythatisputincomesoutoftheotherend.Butnoteveryonecandriveoneorwantsto.Becauseyouhavetodiptheclutchpedal,itislesscomfortabletodriveinheavytraffic.Itmakesthedriv

2、ertiredandthetorqueinterruptions’head-nodeffectonpassengerscanbewearing.Thedriver'sclutchcontrolandcorrespondingtorqueinterruptionsarealsothemanualsweakpoint.Whenacceleratingupthroughthegearbox,eachup-shiftrequiresthedrivertocutthetorquemomentarilybyliftingthe

3、gaspedalanddippingtheclutch.Itmayjusttakeasecondtocompletetheoperation,butduringthistimethevehicleislosingspeedandacceleration.Attheoppositeendofthespectrumisthetraditionalautomatic.Themoderntransmissionisbyfar,themostcomplicatedmechanicalcomponentintoday’saut

4、omobile.Itisatypeoftransmissionthatshiftsitself.Afluidcouplingortorqueconverterisusedinsteadofamanuallyoperatedclutchtoconnectthetransmissiontotheengine.Therearetwobasictypesofautomatictransmissionsbasedonwhetherthevehicleisrearwheeldrive.Onarearwheeldrivecar,

5、thetransmissionisusuallymountedtothebackoftheengineandislocatedunderthehumpinthecenterofthefloorboardalongsidethegaspedalposition.Adriveshaftconnectstherearofthetransmissiontothefinaldrivewhichislocatedintherearaxleandisusedtosendpowertotherearwheel.Powerflowo

6、nthissystemissimpleandstraightforwardgoingfromtheengine,throughthetorqueconverter,thenthroughthetransmissionanddrivershaftuntilitreachesthefinaldriverwhereitissplitandsenttothetworearwheel.Onafrontwheeldrivecar,thetransmissionisusuallycombined.Withthefinaldriv

7、etofromwhatiscalledatransaxle.Theengineonafrontwheeldrivercarisusuallymountedsidewaysinthecarwiththetransaxletuckedunderiton11thesideoftheenginefacingtherearofthecar.Frontaxlesareconnecteddirectlytothetransaxleandprovidepowertothefrontwheels.Inthisexample,powe

8、rflowsfromtheenginethroughthetorqueconvertertoalargechainthatsendsthepowerthrougha180degreeturntothetransmissionthatisalongsidetheengine.Fromthere，Thepowerisroutedthroughthetransmi