9、a very urgent work. This paper analyzes the discharge of pollutants generation and diffusion mechanism, based on steam (wood) oil machine and city operation of the car as the object of study and using the method of theoretical analysis of auto emissions the influence factors and the diffusion mechan 。

10、ism research;
On this basis, according to the domestic and foreign car emissions of pollutants to control regulations, mainly to the discharge of pollutants in CO, HC, NOX and particle emission control technologies and comprehensive technology application to study. In present the automobile exhaust。

11、emissions control technology is key inside machine control technology and cake layer control technology, this paper will first inside machine control technology, control technology, the external environment of cake control technology from the horizontal comprehensive, trying to build machines a cake 。

12、 environment outside a comprehensive control technology, and how to use this technology to a certain extent explored. The author thinks that machines-a cake outside environment three big technology integrated use can use and long-term use short-term from two aspects to analysis. From the point of vi 。

13、ew of short-term use, should through the preferred option low emission of engine and actively carry out the scientific urban traffic control management to achieve real-time control city car drainage purposes. In the control technology in long-term solutions, the first to the environmental control te 。

14、chnology for the development and application of give priority to, also should consider to traffic planning level of technical countermeasures and measures;
Second is the key to strengthen machines a cake layer control technology development application, also should continue to adhere to the motor ve 。

15、hicle inspection/repair plan and further emphasize the implementation of transportation planning. The third stage is main consideration of traffic planning issues, both the implementation of the traffic management measures. Through the three stages of layered implement measures in order to achieve t 。

16、he effect of control science emission purpose, at the same time, and can control the cost and both the control effect of optimization. The comprehensive control point and all levels of comprehensive use of technology development viewpoint, it is to our urban traffic automobile emission control of th 。

17、e research on a comprehensive useful exploration, in hopes of promoting the improvement of the urban atmospheric pollution, ensure the coordinated development of the urban traffic has certain theoretical and practical significance. Key words ：urban traffic;
vehicle emission;
control technology;
comp 。

18、rehensive application III金陵科技学院学士学位论文 第一章 绪论第一章 绪论1.1 论文的研究意义及背景汽车是能源消耗和污染物排放的主要来源 。
根据城市大气污染物来源的分类统计 ， 在我国主要大城市中 ， 有80%左右的污染物来源于汽车排放废气 。
汽车排放废气中含有的主要污染物有:CO、HC、NOX、S02、Pb、微粒等 。
目前的研究表明 ， 对人体有较大危害的汽车排放污染物主要是CO、HC、NOX及微粒 。
由汽车排放而导致的环境污染也日益严重 ， 控制汽车排污问题己迫在眉睫 。
而我国目前的汽车排放污染控制水平仅相当于发达国家20世纪70年代中后期水平 ， 而且近年来 ， 我国汽车工业在国民经济中的地位 。

19、不断提升 ， “十一五”期间 ， 我国机动车保有量呈快速增长态势 ， 由1.18亿辆增加到1.9亿辆 ， 平均每年增长10% 。
其中 ， 汽车保有量由3088万辆增加到7721.7万辆 ， 增加了150%,已连续两年成为世界汽车产销第一大国 。
根据城市大气污染物来源的分类统计 ， 很多大城市汽车污染排放量都呈上升趋势 ， 汽车尾气排放的HC、CO和NOX等有毒气体己经成为城市的第一空气污染源 。
单车排放量高、污染物排放分担率高、污染物排放量大 ， 这些特征在我国城市交通路网中使得汽车污染对人体、动植物及环境的危害更加显著 ， 汽车尾气的排放量极大地制约着城市交通的发展 。
当然地下交通可作为大城市交通发展的首选 ， 但毕竟不能完全取代路面交通 。
因 。

20、此如何尽量减少汽车污染物的排放量和控制污染物的扩散将成为发展城市交通要解决的首要问题 ， 汽车排放污染治理技术将成为控制城市环境污染和解决城市交通发展的关键 。
因此 ， 本文所进行的城市汽车排放污染控制技术的探讨 ， 从汽车排放污染物的生成和扩散机理入手 ， 对汽车排放污染物的影响因素进行了深入细致的分析研究 ， 根据影响因素程度的不同 ， 重点对机内、机外、外环境控制技术的开发应用进行了研究 。

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标题：基于|基于外环境技术控制汽车污染( 二 )