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1、摘要随着经济的高速发展,我国汽车保有量急剧增加,城市汽车尾气排放量快速上升,导致尾气污染问题日益突显。我国相关部门采取了措施,并收到了一定的成效,但是要从根本上根治这个问题的可能性微乎其微,我们只能采取更为有效的措施来控制污染的恶化程度。在我国走向工业化、城市化、现代化的进程中,环境治理问题日益成为我们必须面对的挑战之一。发达国家在发展过程中曾经遇到的环境恶化问题在中国初露端倪,尤其是在经济告诉发展的城市,汽车尾气污染现象相对比较严重,影响了人民群众的生活质量和身体健康,也危害了当地可持续发展的能力。研究汽车尾气的产生机理及其有害成份,采取针对性的汽车尾气净化技术,对保护城市环境空
2、气质量和人们身体健康具有重大而现实的意义。在汽车尾气中,除了两种最终氧化物(CO2和H2O)外,还有CO、未燃尽的碳氢化合物以及高温燃烧时产生的NOX等有害气体;空气和燃料的混合比(空燃比),是影响汽车尾气污染物含量的最基本因素。汽车尾气净化概括为机内净化与机外净化两大类。本文主要介绍了汽车尾气污染的现状及对人体与环境的危害和汽车尾气的控制措施。并对当前汽车尾气治理主要技术对策进行介绍。关键词:汽车尾气,污染,净化处理,控制措施AbstractWiththerapiddevelopmentofeconomy,China'sautopossessionhasincreaseddram
3、atically;citycarexhaustemissionsrisefast,causingtheexhaustpollutionproblemhasbeenincreasing.Ourcountryrelateddepartmentstakenmeasures,andreceivedsomeachievements,buttogettotherootoftherootoftheproblem,wecanonlylowpossibilityoftakemoreeffectivemeasurestocontrolpollutionaggravationdegree.Inourco
4、untrytomovetowardstheindustrialization,urbanizationandmodernization,intheprocessofenvironmentalgovernanceproblemisincreasinglybecomingwemustfaceoneofchallenge.ThedevelopedcountriesinthedevelopmentprocessofoncemetdeteriorationoftheenvironmentprobleminChinaarises,especiallyintheeconomicdevelopme
5、ntofthecity,toldautomobileexhaust.Thephenomenonisrelativelyserious,affectpeople'squalityoflifeandhealthybody,andalsoharmthelocalabilityofsustainabledevelopment.Studytheautomobileexhaustgeneratingmechanismandharmfulingredients,adoptspertinenceautomobileexhaustpurificationtechnique,toprotecttheu
6、rbanenvironmentalairqualityandpeoplehealthyhasimportantandrealisticsignificance.Intheautomobileexhaust,inadditiontothetwofinaloxide(CO2andH2O)outside,stillCO,notburnhydrocarbonsandhigh-temperaturecombustionproducedbytheharmfulgassuchasNOX,Airandfuelmixingratio(air-fuelratio),istoinfluencecarex
7、haustpollutantcontentofthemostbasicfactors.Purifytheautomobileexhaustsummarizedasinsidemachinepurifyandcakelayerpurificationtwokindsbig.Thispapermainlyintroducesthepresentsituationandautomobileexhaustpollutiononhumanandenvironmentalharm