第44卷第3期2023年6月Vol.44No.3June2023内燃机工程ChineseInternalCombustionEngineEngineering内燃机凸轮–滚子接触副时变非牛顿润滑分析晁珅1，2，刘成1，2，朱桂香1，2，高园杰3，郭峰3，李书义3（1.内燃机可靠性国家重点实验室，潍坊261061；2.潍柴动力股份有限公司，潍坊261061；3.青岛理工大学机械与汽车工程学院，青岛266520）LubricationAnalysisforTransientNon-NewtonianoftheCam–RollerPairinAnInternalCombustionEngineCHAOShen1，2，LIUCheng1，2，ZHUGuixiang1，2，GAOYuanjie3，GUOFeng3，LIShuyi3（1.StateKeyLaboratoryofEngineReliability，Weifang261061，China；2.WeichaiPowerCo.，Ltd.，Weifang261061，China；3.SchoolofMechanicalandAutomotiveEngineering，QingdaoUniversityofTechnology，Qingdao266520，China）Abstract：Anon-Newtonianstarvedtransientlubricationmodelofthecam–rollerpairinaninternalcombustionenginewasestablished，andthefilmthicknessratiowasusedtoassessthelubricationbehaviorateachcamrotationangle.Thelubricationofthecontactpairinthecaseofrollerslippagewasstudied，andtheinfluenceofslide–rollratiosonthefilmthicknessratioswasanalyzed.Itwasfoundthatthelargertheslide–rollratios，themorethecamrotationangleswiththefilmthicknessratioslessthan1.5.Thentheinfluenceofoilsupplyonthefilmthicknessratioswasdiscussed，andthecriticaloillayerthicknessatwhichthefilmthicknessratiosdecreasedsignificantlywasgiven.Finally，thechangesofthelubricatingviscositiesattheactualworkingtemperatureswereconsideredtoexploretheinfluenceofvariousviscositiesonthelubricatingstates.Itwasfoundthatwhentheviscositywas0.01Pa·s，thelubricationstateofsomeanglesenteredboundarylubrication.Incertainworkingconditionsthefrictioncoefficientsdecreasedgraduallywiththedecreaseoflubricatingviscosities.摘要：建立了内燃机凸轮–滚子副非牛顿时变乏油润滑模型，用膜厚比讨论每个凸轮旋转角度的润滑状态。首先，研究滚子打滑情况下接触副的润滑问题，分析了不同滑滚比对膜厚比的影响，发现滑滚比越大，膜厚比小于1.5的凸轮旋转角度越多。讨论了供油膜厚对膜厚比的影响，获得了膜厚比大幅下降的临界供油膜厚。最后，考虑实际工作温度下润滑油黏度的变化，探究了不同黏...
