HarpoonshiftaNewConceptiontoImplementGearshiftinTransmission

HarpoonshiftaNewConceptiontoImplementGearshiftinTransmission.pdf
Traditionalconeclutchsynchronizerwhichismostlyusedinvehicleusesfrictiontoimplementsynchronizationtoaccomplishgearshift.Thatleadstosomedisadvantages.InthispaperanewmechanismconceptnamedHarpoon-shiftisproposed.Itisdesignedasanalternativetothetraditionalsynchronizerinautomatictransmission.Harpoon-shifthassimplerstructuretomanufacturethanthetraditionalsynchronizer.Additionally,asimplerelectromotorcontrolsystemisusedtoreplacecomplexhydraulicsystemtochangegearsduringshifting.Harpoon-shiftwillofferspotentialenergyeconomyimprovementsbyimproveddrivetrainefficiencyandbettervehicleaccelerationability.FirstlythemechanicalstructureofHarpoon-shiftisshowedasvirtualmechanicalmodeldesignedbyProE.Ithas5maincomponentsincludingoneidlergearwithintegralgroovering,oneguidering,oneflexiblecomponentbetweentheguideringandthegroovering,oneHarpoon-shifthuboneHarpoonshiftsleeve.Harpoon-shiftmakesuseofanindirectengagement,whichgivesapre-accelerationtothechosengeartorealizethesmoothgearshift.Themathematicmodeling,simulationandanalysisofthenewmechanismconceptarepresentedinthispaperasaseparatedpartfromgearbox.AccordingtothatthecomponentsofHarpoonshiftareonthesameshaftandthemainmotionisrotation.themodelingisbuiltwithoneDOF.Mechanismengagementisdemonstratedinrigidbodymodelswithdetailedinteractionaltorquemodelsconsideringthegeometricallimitation.toestablishitsvariationoveritsprocess.Theparameterse.g.mass,stiffness.anglesofengagementarevariableinsimulationmodel.TheparameterstudyingmakescontributionstocomparisonsandoptimizationofHarpoon-shiftstructure.Thenanoptimizedstructureischosenforcomparisonoftorqueinterruptwithtraditionalsynchronizer.whichshowssignificantadvantageofthenewconcept.
作者：FangYuhongZhangN.PaulD.Walker
作者单位：FacultyofEngineeringandInformationTechnology,UniversityTechnologyofSydney
母体文献：2015中国汽车工程学会年会论文集
会议名称：2015中国汽车工程学会年会  
会议时间：2015年10月1日
会议地点：上海
主办单位：中国汽车工程学会
语种：chi
分类号：
关键词：harpoon-shift  synchronizer  transmission  gearshift
在线出版日期：2018年1月31日
基金项目：
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HarpoonshiftaNewConceptiontoImplementGearshiftinTransmission.pdf

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