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随着现代社会的发展,汽车已成为人们日常生活必不可少的交通工具,汽车工业也咸为带动经济发展的一个重要行业,其发展水平也是衡量一国经济水平的重要指标之一。而汽车发动后,气缸内的废气将达到800℃-900℃的高温并形成0.1-0.2MPa的气压。在一个汽车保有量相当大的城市,如果所有这些废气均直接排入大气层,其产生的巨大噪音和严
With the development of modern society, the automobile has become an indispensable means of transport for people’s daily life. The automobile industry is also an important industry that drives economic development. Its level of development is also one of the important indicators for measuring the economic level of a country. After the car starts, the cylinder exhaust gas will reach 800 ℃ -900 ℃ high temperature and the formation of 0.1-0.2MPa pressure. In a city with a significant share of cars, if all of these emissions are directly discharged into the atmosphere, they generate significant noise and harshness