文档介绍：摘要
现代城市空气主要污染就是汽车尾气污染,汽车排放的尾气主要由CO2,HC,NOX组成,CO2是主要的温室气体,HC和NOX会造成光化学污染,影响人的身体健康,而且NOX还是酸雨的主要成分。因此世界各个国家,都在积极地利用科技手段和其他方法,来降低汽车尾气所造成的大气污染。在科技手段方面,人们已经意识到不能只通过末端治理的方法来控制污染,而应该从源头控制,所以科研工作者积极地通过对发动机的改造,来实现对汽车尾气污染的治理。这些改造主要有三个方面,第一个方面是改变发动机燃烧方式;第二个方面是引入电子电路和传感器技术,实现发动机精确燃烧;第三方面在汽车上加装辅助设备,达到节能减排的目的。
关键词:汽车尾气污染发动机节能减排
Abstract
In the modern city, the pollution of automobile exhaust, the pollution is posed of CO2, HC, NOX, CO2 is the main greenhouse gas, HC and NOX are result of the photochemistry pollution, and affect person's health, moreover NOX is principal constituent of acid rain the. In the world , every country is positively to use the technical method and other methods, reduces the pollution. In the aspect of technical method, the people already realized that cannot only think the terminal method to control pollution, but should from the source, therefore the scientific researcher through to the transformation of the engine, positively to achieve to reduse pollution. These transformations have three aspects, the first, changes the engine way bustion; The second, introduces the technology of electronic circuit and the sensor, to reach the engine