回流式無級自動變速傳動系統(tǒng)的設(shè)計方法研究.pdf

1、重慶大學(xué)碩士學(xué)位論文回流式無級自動變速傳動系統(tǒng)的設(shè)計方法研究姓名：迮素芳申請學(xué)位級別：碩士專業(yè)：車輛工程指導(dǎo)教師：孫冬野20060501英文摘要IIIABSTRACTContinuouslyvariabletransmission(shtasCVT)withrefluxpowerissuperwideinratiocoverageratherhighintransmissionefficiency.Meoveritcancontinuo

2、uslyregulatespeedinitsratiocoveragewhichleadstoenginewksatoptimumfueleconomycurveallalong.TherefeCVTwithrefluxpowerwillbeverypromisingfresearchapplication.Carriedoutbynationalnaturalsciencefoundation(NNSF)newcenturytalen

3、tssupptplanningprojectdesignmethodfthesystemofCVTwithrefluxpowerhasbeenstudiedinthispaper.Themaincontentsarefollowing.1Onthepurposeofimprovingefficiencyofcontinuouslyvariabletransmissionwithrefluxpowerefficiencyofpreviou

4、ssystemunderlowgearreversegearhavebeenanalyzedtooptimizeitsstructurebasedonanalysisofspeedmodulationacteristictransmissionefficiencyoftransmissionsystem.What’smewithmaximumspeedratiominimumspeedratiooftransmissionsystems

5、peedratioofreversegearhavingbeencalculateddesignmethodofstructuralparametershasbeenbroughtout.FinallySC7101asreferencedesignonstructuralparametersofcontinuouslyvariabletransmissionwithrefluxpowerhasbeenpresentedonthebase

6、ofperfmanceofpreviousstructure.2Themechanicalanalysisftheringsblocksinthemechanismofmetalpushbeltcontinuouslyvariabletransmissionhasbeendonewithgivenstructureparameters.Thentheexpressionsfaxialfceondrivingwheeldrivenwhee

7、lhavebeenderived.Finallythemaximumaxialfcesondrivingwheeldrivenwheelhavebeenobtainedtheeffectscausedbythemalsohavebeenanalyzed.3Basedonthediagrammaticsketchftransmissionsystemthestructuredrawinghasbeendrawninwhichtheclut

8、chthebrakeconstantratiogearsplagearsthedoublegeareddrivesoonarealldesignedaccdingtotheresultsobtainedinaboveparagraph.Someproblemsthatshouldbecareduringthedesignofclutchhavebeenanalyzedthengearsshaftsareallcheckedinthepa

9、per.4OnthepurposeofcomparisonbetweenCVTwithrefluxpowermetalpushbeltcontinuouslyvariabletransmissiondualstatecontinuouslyvariabletransmissionthesimulationmodelsfsuchthreedifferentCVThavebeenbuiltwithwhichtheadvantagesofCV