基于底盤測功機的發(fā)動機振動系統(tǒng)試驗研究.pdf

1、沈陽理工大學碩士學位論文基于底盤測功機的發(fā)動機振動系統(tǒng)試驗研究姓名：王宏偉申請學位級別：碩士專業(yè)：車輛工程指導教師：王靈犀20110306沈陽理工大學碩士學位論文AbstractTheanalysisstudyoftheinlinefourcylinder’svibrationwasdoneinthispaper.theshockreductiontheisolationoftheenginewerefinishedbytheanaly

2、sisofthetestdatawhichwasusedtograspthevibrationsituationoftheengine.Notonlywastheenginebodyitselfbutalsotheothermachinepartsancillaryequipmentencouragedbythevibrationoftheenginewhichaffectthepassengers’comftdrivingsafety

3、ridingcomft.theanalysisevaluationoftheresearchexperimentoftheenginevibrationwasfinishedtoprovideevidenceftheshockabsptionisolation.Twoexperimentsweredonewiththeinlinefourcylindergasolineengine.Inthefirsttesttheenginewaso

4、peratingathighloadinthechassisdynamometer.BythataccelerationdatawastestedatdifferentspeedswhichwereprocessedtotimedomainanalysisfrequencydomainanalysisbySignalProcessingToolboxofMATLABsoftwaretograspthevibrationoftheengi

5、ne(includingtheverticalhizontalaxialsituationofdifferentvibrationintensityatdifferentspeedstheengine’smaininterference’sders).Alloftheseareusedtoprovidethedatainfmationfstructuralmodificationsoptimizationmanufacturingpro

6、ductionprocessofenginesystem.Inthesecondtesttheenginewasoperatingatlightloadtoacquittheaccelerationdataatdifferentspeedsthentransfmedintoangularvelocitysignalsaccelerationsignals.Theangularvelocitytheangularaccelerationc