Taking the action of clean vehicles for example in Chongqing and on the basis of a good deal of research, experiment and analysis to a lot of data,this article evaluated quantificationally the effect of the emissions of vehicle to the atomosphere environment such as being used CNG vehicles,new CNG vehicles equipped with the carburetor or EFI or firing the double used fuel or the single fue

With maturing of CNG vehicle technology and perfection of networked construction of gas fueling station,the opportunity to realize interurban regionalization running of CNG vehicles already has arrived.

The necessity of constructing fueling station for CNG vehicle,the construction scale,and the market analysis are discussed in the light of Handan specific conditions,the social benefit and economic benefit of the fueling station are analyzed,and the investment recovery period is forecasted.

China s refit vehicle sale volume is a complicated multi-factor and multi-layer system and its chronological sequence is a result of mutual constraint,mutual influence,and coordinated development of the factors.

The current situation and developing trends of auto refitting are described,the principle,process and features of the body refitting design for Dongfeng EQ1141 high-roof double-sleeper heavy-duty truck are presented.