车辆工程外文翻译----自动变速器.docx

《车辆工程外文翻译----自动变速器.docx》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、附录B翻译资料AutomaticTransmissionsThemodernautomatictransmissionisbyfar,themostcomplicatedmechanicalcomponentintoday'sautomobile. Automatictransmissionscontainmechanicalsystems,hydraulicsystems,electricalsystemsandcomputercontrols,allworkingtogetherinperfectharmonywhic

2、hgoesvirtuallyunnoticeduntilthereisaproblem.ThisarticlewillhelpyouunderstandtheconceptsbehindwhatgoesoninsidethesetechnologicalmarvelsThisarticleisbrokendownintotwosections:Whatisatransmissionbreaksdowninthesimplesttermswhatthepurposeofatransmissionis.Transmission

3、Componentsdescribesthegeneralprincipalsbehindeachsysteminsimpletermstohelpyouunderstandhowanautomatictransmissionworks.Whatisatransmission?Thetransmissionisadevicethatisconnectedtothebackoftheengineandsendsthepowerfromtheenginetothedrivewheels. Anautomobileenginer

4、unsatitsbestatacertainRPM(RevolutionsPerMinute)rangeanditisthetransmission'sjobtomakesurethatthepowerisdeliveredtothewheelswhilekeepingtheenginewithinthatrange. Itdoesthisthroughvariousgearcombinations.Infirstgear,theengineturnsmuchfasterinrelationtothedrivewheels

5、,whileinhighgeartheengineisloafingeventhoughthecarmaybegoinginexcessof70MPH. Inadditiontothevariousforwardgears,atransmissionalsohasaneutralpositionwhichdisconnectstheenginefromthedrivewheels,andreverse,whichcausesthedrivewheelstoturnintheoppositedirectionallowing

6、youtobackup. Finally,thereistheParkposition. Inthisposition,alatchmechanismisinsertedintoaslotintheoutputshafttolockthedrivewheelsandkeepthemfromturning,therebypreventingthevehiclefromrolling.Therearetwobasictypesofautomatictransmissionsbasedonwhetherthevehicleisr

7、earwheeldriveorfrontwheeldrive.  Onarearwheeldrivecar,thetransmissionisusuallymountedtothebackoftheengineandislocatedunderthehumpinthecenterofthefloorboardalongsidethegaspedalposition. Adriveshaftconnectstherearofthetransmissiontothefinaldrivewhichislocatedinthere

8、araxleandisusedtosendpowertotherearwheels.  Powerflowonthissystemissimpleandstraightforwardgoingfromtheengine,throughthetorqueconverter,thenthroughthetr