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1、本科学生毕业设计汽车进排气的瞬时运动分析院系名称:机电工程学院专业班级:机械08级3班学生姓名:指导教师:职称:二○一二年六月TheGraduationDesignforBachelor'sDegreeMovementSimulationofInputAirandOutputairValveofEnginebasedonPro/eCandidate:LuLiang-liangSpecialty:Mechanical DesignManufacturing and AutomationClass:08-3Supervisor:LecturerGengRui
2、-guangHeilongjiangInstituteofTechnology2012-06·Harbin摘要配气机构作为内燃机的重要组成部分,其设计合理与否直接关系到内燃机的动力性能、经济性能、排放性能及工作的可靠性、耐久性。随着内燃机高功率、高速化,人们对其性能指标的要求越来越高,要求其在高速运行的条件下仍然能够平稳、可靠地工作,因而对其配气机构提出了更高的要求。配气凸轮型线是配气机构的核心部分,配气凸轮型线设计是配气机构优化设计的重要途径之一。模拟计算和实验研究是内燃机配气机构研究两种重要手段。本文对配气机构给零件形状、尺寸进行了设计,并且应用pr
3、o-engineer进行了实体建模,得到了配气机构的三维装配图。再将配气机构模型导入ADAMS软件进行约束的建立以及驱动的添加,使得配气机构能够在ADAMS软件中进行仿真,从而得到各种数据曲线对整个机构的性能进行分析,根据各种数据分析得到配气机构的最优设计。关键词:内燃机;配气机构;虚拟样机技术;建模;仿真IIABSTRACTThevalvetrainisoneofthemostimportantmechanismsinainternalcombustionengine,whethertheperformancesaregoodorbad,thataff
4、ectingthepowerperformance,economicperformance,emissionsperformanceoftheengine,aswellasaffectingthereliabilityandwearperformancesofthewholeengine.Alongwiththerequestsoftheengine’shighpower,super-speed,peopledemandahigherindex.Thatis,whentheenginerunsunderahighspeed,itcanstillworks
5、teadilyanddependably,whichdemandthatthevalvetrainsystemshouldhaveahighperformance.Camprofileisthehardcoreofthevalvetrain,whichdesignisoneoftheimportantwaystocarryoutvalvetrainoptimaldesign.Simulationcalculationandexperimentationresearcharetwoimportantwaystocarryoutresearchanddeve
6、lopmentonvalvetrainofinternal-combustionengine.Thisthesisdevisethepartsshapeanddimensionforthevalvetrain,obtainthe3Dassemblydiagrambaseonmodelentitiesbypro-engineer.ImportingthevalvetraintoADAMSsoftware,thencreatingtheconstraintsandaddingdrives.Sequentially,analyzethewholeorganiz
7、ationperformance,aftergetthevariousdatacurvefromvalvetrainbecapablesimulationinADAMSsoftware.Finally,obtaintheoptimumdesignofvalvetrainaccordingtovariousdataanalysis.Keywords:Internalcombustionengine;ValvetrainVPT;Virtualprototypingtechnology;Modeling;SimulationII目录摘要………………………………
8、…………………………………………………ⅠAbstract………………………………