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某SUV车型低速液压转向啸叫分析与优化.docx

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某SUV车型低速液压转向啸叫分析与优化 Title:AnalysisandOptimizationofLow-SpeedWhiningNoiseinanSUVHydraulicPowerSteeringSystem Abstract: Theaimofthispaperistoinvestigateandoptimizethelow-speedwhiningnoiseexperiencedinaSportUtilityVehicle(SUV)hydraulicpowersteeringsystem.Whiningnoiseisacommonissueencounteredinmanypowersteeringsystems,whichcansignificantlyimpactthedrivingexperienceandcustomersatisfaction.Thisstudysystematicallyanalyzestherootcausesofthewhiningnoiseandproposespotentialoptimizationstrategiestomitigateoreliminatetheproblem. Keywords:SUV,hydraulicpowersteeringsystem,low-speed,whiningnoise,analysis,optimization 1.Introduction ThehydraulicpowersteeringsystemiswidelyusedinSUVsduetoitshigh-powerassistanceandreliability.However,theoccurrenceofwhiningnoiseduringlow-speedsteeringmaneuversremainsachallengeforautomotivemanufacturers.Thispaperaimstoidentifytherootcausesofthewhiningnoiseanddevelopoptimizationstrategiestoimprovethesteeringsystem'sperformance. 2.AnalysisofLow-SpeedWhiningNoise 2.1.ExperimentalApproach Inordertoanalyzethelow-speedwhiningnoise,aseriesofexperimentswereconductedonarepresentativeSUVmodelequippedwithahydraulicpowersteeringsystem.Theexperimentsincludedmeasurementsofdifferentsteeringangles,fluidflows,andsystempressures.Therecordeddatawasthenanalyzedtoidentifyanycorrelationsbetweenspecificoperatingconditionsandtheoccurrenceofnoise. 2.2.RootCauseIdentification Throughtheanalysisoftheexperimentaldata,severalpotentialrootcausesofthelow-speedwhiningnoisewereidentified,includingpumpcavitation,fluidturbulence,andvibrationcoupling.Eachpotentialcausewasseparatelyinvestigatedandevaluatedthroughadditionalsimulations,componentteardowns,andsystemmodifications. 3.OptimizationStrategies 3.1.PumpDesignOptimization Oneofthemaincontributorstothewhiningnoiseinahydraulicpowersteeringsystemispumpcavitation.Bymodifyingthepumpdesign,suchasimprovingtheimpellershapeorchangingthepumphousingmaterial,theriskofcavitationcanbeminimized,leadingtoareductioninnoisegeneration. 3.2.FluidDynamics