摘要随着汽车行业的不断发展，汽车尾气排放污染日益严重，本文分析了汽车排放污染物的主要成分、危害、生成机理以及影响因素，现行汽车排放法规等，着重对在用国产汽车发动机怠速工况污染物的排放统计特征进行深入系统地研究，根据汽车检测线检测得到的大量样本实测数据，展开参数估计和假设检验，确定其最优拟合分布和相应的分布参数，进而建立轻型普通货车发动机的怠速工况污染物的排放分布密度函数和分布函数统计模型。对在用汽车的排放情况进行深入分析和研究，为控制车辆排放污染提供可靠的保证，对正确评价其对城市周围大气环境所造成的污染以及排放法规的修订必将起到重要的作用。关键词：汽车，发动机，怠速工况，排放物，统计规律AbstractWiththecontinuousdevelopmentofautomobileindustry,carexhaustemissionpollutionisincreasinglyserious,thisarticleanalyzesthemaincomponentsofthevehicleemissionpollutants,harm,formationmechanismandinfluencingfactors,theexistingvehicleemissionregulations,thepollutantemissionsinacarengineidlespeedconditionsofstatisticalfeaturesin-depthstudysystematically,accordingtothesampleofautomobiletestlinedetectiontogetalargenumberofmeasureddata,parameterestimationandhypothesistest,determinetheoptimumfittingdistributionandcorrespondingdistributionparameters,thenbuildalight-dutyordinaryfreightcarengineidlespeedconditionemissionsofpollutantsdistributiondensityfunctionanddistributionfunctionofstatisticalmodel.Tousethecaremissionsituationin-depthanalysisandresearch,toprovidereliableguaranteetocontrolvehicleemissionpollution,tocorrectlyevaluateitsaroundthecityatmosphericenvironmentcausedbypollutionandemissionregulationsrevisionwillplayanimportantroleKeywords:Automobile,engine,idlespeedcondition,emissions,statisticallaw前言..............................................................................................................................11汽车排放污染物的种类及其危害.............................................................................21.1我国汽车发展概况与环境污染.......................................................................21.2汽车排放污染物的种类...................................................................................21.3汽车排放污染物的危害...................................................................................31.3.1CO的危害...............................................................................................31.3.2碳氢化合物的危害.................................................................................41.3.3氮氧化合物的危害.................................................................................41.3.4光化学烟雾的形成和危害.....................................................................41.3.5碳烟颗粒的危害.....................................................................................51.3.6CO2排放危害.........................................................................................51.3.7非常规污染物的危害.............................................................................52.汽车排放物的产生机理和影响因素.........................................................................72.1CO的生成机理和影响因素.............................................................................72.2HC的生成机理及影响因素.............................................................................72.3NOX的生成机理及影响因素.........................................................................82.4碳烟(颗粒)的生成机理及影响...
