汽车发动机停车振动特性的研究与减振装置的设计

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1、分类号密级型皇鱼璺．!墨璺±：垒单位代码学号窟微震业大学学位论文10364汽车发动机停车振动特性的研究与减振装置的设计Studyofautombileengine’Sshuttingdownvibratingcharacteristicsanddesignofantivibrationdevice研究指导教生：王薹师：夔焦主熬援合作指导教师：{I请学位门类级别：王堂亟±向：也电二笠丝院：王堂院答辩委员会主席二00七年六月名方学业究在专研所AbstractWiththesociety’Sincreasingprogressandthetechnology’Sunceasingdevel

2、opment，people’Sdesirefortheautomobile’Scomfortablenessbecomesmoreandmoreeager．Goodsmoothnessandlownoiseofautomobileinstarting，idling,normalrunning，shuttingdownandothercasesarethesymbolofmodemautomobile．Thisarticletakesacertainhomemadedieselvehicleastheresearchobject，studiesshort-timefiercevibra

3、tionphenomenon’Sreasonandmechanismintheshuttingdownprocess，proposespracticalandfeasiblesolution,anddesignsagoodantivibmtiondevicewhichisbasedonthedesignconceptthatscientificresearchunifiesactualproduction．Mainresearchworkincludethefollowingaspects：1、Discussingtheautombileengine'sshockexcitation

4、soulee．Throughtheanalysisofsimplexandmulti-cylinderautombileengine’Sshockexcitationsource，abstractingtheenginesysteminshuttingdownforthesingledegreeoffreedomvibratingsystemandmadearesearch．2、Throughthesingledegreeoffreedomvibratingsystem’Sfreeandforcedvib．rating‘Sanalysis，obtainingthevibratingc

5、urveofenginevibrationsystemintheshutingdown．3、Analyzingvariousautombileengine’Svibratingcontrolmethods，proposingtheengine’Svibratingcontrolmethodintheengine’Sshuttingdownaccordingtotheresearchtopic．4、Accordingtotheactualrequestmentofvibratingcontroldeviceintheantombileengine‘Sshufingdown，design

6、ingareliableantivibrationdevice．5、Processingtheprototypeofantivibrationdevice，assembleingitinacaractuallyandexaminingitsantivibrationeffect．Keywords：dieselengine，shuttingdown,antivibration,DOE，optimizationn插图清单-l发动机运动部件图⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．8_2单缸发动机受力图⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．10-3多缸发动机受力情况⋯⋯⋯⋯⋯⋯⋯

7、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．13-4发动机缸体受力情况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．13一l单自由度自由振动系统⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．19_2欠阻尼系统衰减振动曲线⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．23-3单自由度系统强迫振动⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯。24_4幅频曲线和相频曲线⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯。26．5支承运动激励⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．27_6支承谐波激励的