自20世纪汽车开始普及后,作为交通运输工具的汽车就成为环境的污染源。随着石油消费的急剧增加,有限的石油资源面临枯竭的威胁,同时世界各国为了减少环境污染,制定的排放法规日益严格,这两方面促使世界各国开发新能源,目前从世界范围看,正进入一个石油的代用燃料时期。 在已研制的代用燃料中,天然气由于其高热值、高辛烷值、低污染和价格低廉,而成为汽车首选的代用燃料。 Since the beginning of the 20th century car became popular, the car as a means of transport has become a source of environmental pollution. With the sharp increase of oil consumption, the limited oil resources are facing the threat of depletion. At the same time, in order to reduce environmental pollution, the emission regulations set by various countries in the world are stricter. These two aspects urge all countries in the world to develop new energy sources. At present, from a worldwide perspective, A petroleum alternative fuel period. Among the alternative fuels that have been developed, natural gas has become the fuel of choice for the automobile due to its high heat value, high octane number, low pollution and low cost.