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ID:6694103
大小:202.00 KB
页数:11页
时间:2018-01-22
《制动器外文翻译 车主减速器的对比分析与设计》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、本科生毕业设计(论文)外文翻译毕业设计(论文)题目:汽车主减速器的对比分析与设计外文题目:AUTOMOTIWEFINALDRIVE译文题目:汽车主减速器学生姓名:专业:车辆工程指导教师姓名:评阅日期:AUTOMOTIWEFINALDRIVEFINALDRIVEAfinaldriveisthatpartofapowertransmissionsystembetweenthedriveshaftandthedifferential.Itsfunctionistochangethedirectionofthepowertransmittedbythedriveshaftthrough90d
2、egreestothedrivingaxles.Atthesametime.itprovidesafixedreductionbetweenthespeedofthedriveshaftandtheaxledrivingthewheels.Thereductionorgearratioofthefinaldriveisdeterminedbydividingthenumberofteethontheringgearbythenumberofteethonthepiniongear.Inpassengervehicles,thisspeedreductionvariesfromabou
3、t3:1to5:1.Intrucksitvariesfromabout5:1to11:1.Tocalculaterearaxleratio,countthenumberofteethoneachgear.Thendividethenumberofpinionteethintothenumberofringgearteeth.Forexample,ifthepiniongearhas10teethandtheringgearhas30(30dividedby10),therearaxleratiowouldbe3:1.Manufacturersinstallarearaxleratio
4、thatprovidesacompromisebetweenperformanceandeconomy.Theaveragepassengercarratiois3.50:1.Thehigheraxleratio,4.11:1forinstance,wouldincreaseaccelerationandpullingpowerbutwoulddecreasefueleconomy.Theenginewouldhavetorunatahigherrpmtomaintainanequalcruisingspeed.Theloweraxleratio.3:1,wouldreduceacc
5、elerationandpullingpowerbutwouldincreasefuelmileage.Theenginewouldrunatalowerrpmwhilemaintainingthesamespeed.Themajorcomponentsofthefinaldriveincludethepiniongear,connectedtothedriveshaft,andabevelgearorringgearthatisboltedorrivetedtothedifferentialcarrier.Tomaintainaccurateandproperalignmentan
6、dtoothcontact,theringgearanddifferentialassemblyaremountedinbearings.Thebeveldrivepinionissupportedbytwotaperedrollerbearings,mountedinthedifferentialcarrier.Thispinionshaftisstraddlemounted.meaningthatabearingislocatedoneachsideofthepinionshaftteeth.Oilsealspreventthelossoflubricantfromthehous
7、ingwherethepinionshaftandaxleshaftsprotrude.Asamechanic,youwillencounterthefinaldrivegearsinthespiralbevelandhypoiddesign.SpiralBevelGearSpiralbevelgearshavecurvedgearteethwiththepinionandringgearonthesamecenterline.Thistypeoffina
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