1、同濟大學(xué)博士學(xué)位論文車輛傳動系換檔結(jié)合元件分析與研究姓名：趙世琴申請學(xué)位級別：博士專業(yè)：工程機械指導(dǎo)教師：黃宗益劉釗2000.6.1AbstractTransmissionsarethemaincomponentofthevehiclepowertrain，whichshiftsusingengagementelementsTheengagementelementsofmechanicaltransmissionincludeshift

2、gears，meshcovers，synchronizers，clutchesandbrakesSynchronizersarewidelyusedinautomobilemanualtransmissionClutchesandbrakesareusedinplanetarytransmissionInordertosolvetheproblemsexistinginthetheoreticalstudyandsupplytechni

3、calhelpintheproductionofmanualandautomatictransmissions，thispaperanalyzesandstudiessynchronizers，shiftclutches，brakesandtorqueconverterlockupclutchesindetailThepaperfoundstheuniversalmathematicsmodelduringsynchronizingpr

4、ocess，andgivestheshiftabilityandshiftqualitycriteriaforevaluationofsynchronizersroundlyWiththemoderndesignmethodologythefunctionalelementsofsynchronizeraredeterminedviaanalyzingthesynchronizerfunction，andsynchronizersare

5、newlyclassifiedaccordingtoitsfunctionalelementsThegeneralprogram，whichisappliedtoanalyzesynchronizerperformanceandshiftqualityrating，hasbeendevelopedAsanapplyingexample，thispaperanalyzessynchronizersofmechanicaltransmiss

6、ionforShanghaiVWAutoCoLtdPassatcarInadditionsynchronizerperformanceandlifetest，SynchronizerfrictioncoefficientonfrictionsurfacetestonAG4havebeenaccomplished，improvementproposalsonsynchronizertestsaretabledThemethod，bywhi

7、chtheplanetarysystemcanbechangedintotheequivalentfixedaxlessystem，isgivenTheloadcalculation，checkanddesignprogramhasbeenprogrammedUsingthisprogramGermanVWAutoCoLtdAG4automatictransmissionisanalyzedconcretelyTheanalogylev

8、ermethodisextendedintoageneralmethodforanalyzingthedynamiccharacteristicoftheplanetarytransmissionWiththemethodAG4automatictransmissiondynamicequationsareestablishedThedynamiccharacteristicprogramduringshiftprocessofauto

9、matictransmissionhasbeenprogrammed，upshiflanddownshiflbetween2Hand3HofAG4automatictransmissionhasbeensimulated，theparameterschangeinthedifferentengagementsituationhasbeenanalyzedMeanwhile，inordertoanalyzethetheoryofshift

10、process，theuniversalsimplifiedmodelduringtheautomatictransmissionshiftprocessissetup，andtheinfluenceonshiftout，shiftin，torquephaseandinertialphasebytheoilpressureofengagementelements，especiallyonoutputtorque，isanalyzedOn