关于汽油车噪声检测与控制摘要：伴随着城市化速度的加快，汽油车的数量也随之逐步增多,干扰人们生活的重大污染之一就是噪声污染,全球各国对汽油车的噪声提出了越来越苛刻的限制要求。汽油车噪声已经成为评价汽车舒适度的重要指标，目前受到各大汽车生厂商和制造商的关注，也是各大整车厂的主要研究方向之一。本文通过查阅文献，介绍了课题研究的背景和意义，目前汽油车噪声研究的现状，进一步分析汽油车供油系统的构成和工作原理，进而分析车内噪声产生的机理、噪声来源和传播的途径。燃油泵噪声、燃油箱噪声和燃油管路噪声是汽油车最为主要的噪声。根据噪声产生的机理、来源和传播途径提出同时进行零部件单体和系统的优化设计，控制对发动机气缸内的气体燃烧产生的燃烧噪声，控制对汽车发动机机械本身运动产生机械声和控制对汽车发动机维持正常工作所需要的空气动力噪声等具体措施。关键词：汽油车；噪声；检测；控制IOnNoiseDetectionandControlofGasolineVehiclesAbstract:Withtheaccelerationofurbanization,thenumberofpetrolvehiclesisgraduallyincreasing.Oneofthemajorpollutionthatdisturbspeople'slivesisnoisepollution.Countriesaroundtheworldhaveputforwardmoreandmorestringentrestrictionsonthenoiseofpetrolvehicles.Petrolvehiclenoisehasbecomeanimportantindicatorforevaluatingthecomfortlevelofautomobiles.Atpresent,ithasattractedtheattentionofmajorautomobilemanufacturersandmanufacturers,andisalsooneofthemainresearchdirectionsofmajorautomobilemanufacturers.Inthispaper,thebackgroundandsignificanceoftheresearchandthecurrentsituationoftheresearchonthenoiseofgasolinevehiclesareintroducedthroughliteraturereview.Thecompositionandworkingprincipleofthefuelsupplysystemofgasolinevehiclesarefurtheranalyzed,andthemechanismofnoisegeneration,noisesourcesandtransmissionwaysinthevehiclesarefurtheranalyzed.Fuelpumpnoise,fueltanknoiseandfuellinenoisearethemostimportantnoisesofpetrolvehicles.Accordingtothemechanism,sourceandtransmissionrouteofnoise,specificmeasuresareputforward,suchasoptimizingthedesignofcomponentsandsystemsatthesametime,controllingthecombustionnoisegeneratedbythecombustionofgasintheenginecylinder,controllingthemechanicalsoundgeneratedbythemovementoftheautomobileenginemachineryitself,andcontrollingtheaerodynamicnoiserequiredforthenormaloperationoftheautomobileengine.Keywords:Gasolinevehicle;Noise;Detection;ControlII目录前言................................................................................................11绪论............................................................................................21.1课题研究背景和意义....................................................................................21.2汽油车噪声的研究现状................................................................................22汽油车运行噪声研究理论基础........................32.1供油系统的构成............................................................................................32.2供油系统的工作原理....................................................................................43供油系统的噪声来源...................................................43.1车内噪声产生机理........................................................................................43.2供油系统噪声来源及传播途径....................................................................53.2.1燃油泵噪声........................................................................................53.2.2燃油箱噪声.....................................................................................
