气门杆油封动态密封性能仿真研究

27(2009)4TransactionsofCSICEVol.27(2009)No.4:100020909(2009)042037920527206031,1,2(1.,233011;2.,310027):,,,,,,:;;;:TK411:AStudyonDynamicSealingPerformanceofValveStemSealsGAOQun2qin1,CHENAn2yu1,JINGGuo2xi2(1.DepartmentofEquipmentTechnology,AutomobileManagementInstitute,PLA,Bengbu233011,China;2.Departmentofenergyengineering,ZhejiangUniversity,Hangzhou310027,China)Abstract:Two2dimensionaxisymmetricfiniteelementmodelsofvalvestemseals(VSS)structurewerebuilt.ThedynamicsealingperformanceofVSSundervalveworkingconditionwasinvestigated.Theinflu2enceofdifferentsealingstructureparametersondynamicsealingperformancewasanalyzed.Simulatedre2sultshowsthatthesealingperformancevariesgreatlytocrankangleposition,andislargelyaffectedbythevalvevelocityfluctuations.Fiercemovementatsealinglipispresentedatthemomentofvalvechangingdi2rections.Therelationshipbetweenthedynamicsealingperformanceandgeometricdesignparametersissimulated,whichprovidetheguidancetooilsealdesign.Keywords:Valvestemseals;Dynamicsealingperformance;Finiteelement;Oilsealdesign,[1],,,,,,,,,,,,,11,,,,rh,1,,3:2009202204;:2009206211:530(2007):,,E2mail:[e-mail][2],Mooney2Rivlin,W(I1,I2)=ni,j=0Cij(I1-3)i(I2-3)j(1):W;CijRivlin,I1I212Green,I1=21+22+23(2)I2=(12)2+(23)2+(31)2(3)2Mooney2Rivlin,[3],FtFdFd=(Ftsin)/d(4):d1Fig.1RipsealingstructureandFEMmodel,,,,[3][4]0.12,,,,,,,,,,[3],,3600r/min,2,,810CaA2Fig.2Curveofvalvevelocity0.9mm,3326,h0.33mm,18N3,,,,3Fig.3Changesincontactwidthwithcamdegree4,,,,540CaA110CaA083274,,,110CaA()40CaA(),,4Fig.4Changesinmaximumcontactpressurewithcamdegree5Fig.5Contactpressuredistribution,,,,,,,3,[5][7],,,,,,3.1R6a,,R6b,R,a)b)6Fig.6Changesinmaximumcontactpressureandcontactwidthwithlipradiusvariation7,,0.3mm,;0.3mm,,3.2[8],,8,35,;18320097:35,9,,,33,,,3.310b,,[3];,10a11,,,283274,,,4,,,,,,,,,,:[1]XuLifeng,McCabeRobertW,HubbardCarolynP.ImpactofOilConsumptionModesandPathwaysonOil2DerivedCat2alystDeposits[C].SAEPaper200720121072,2007.[2],.[J].,2008,30(1):34235.[3]AllanMason2Jones,AlanFern.FurtherFiniteElementAnal2ysisofReciprocatingValveStemSeals[C].SAEPaper199920120885,1999.[4]JuergenNetzer,Karl2HeinzMaus.ImprovementsofValveStemSealstoMeetFutureEmissionRequirements[C].SAEPaper980581,1998.[5]PhilipCHadinata,LyndonScottStephens.SoftElastohydro2dynamicAnalysisofRadialLipSealswithDeterministicMi2croasperitiesontheShaft[J].JournalofTribology,2007,129(4):8512859.[6]MaouiA,HajjamM,BonneauD.NumericalAnalysisofThermoelastohydrodynamicBehaviorofElastomerRadialLipSeals[J].JournalofTribology,2008,130(1):5042603.[7]ThomineM,DegrangeJM,VigierG,etal.StudyofRela2tionsBetweenViscoelasticityandTribologicalBehaviourofFilledElastomerforLipSealApplication[J].TribologyIn2ternational,2007,40(2):4052411.[8]GoichMori,TakashiUmeki,YoshinobuUeno,etal.EngineValveStemSeal,OilLeakageControlTechnologyandPer2formance[C].SAEPaper960208,1996.38320097: