前言发展天然气汽车(CNG)对川渝地区来讲有特殊的意义。首先川渝地区缺油富气,天然气增长快,且输气管网已经形成,其次对川渝减排废气改善环境有很大意义,第三在当前油价高涨情况下,还相对能降低运输成本。对全国产气用气地区而言也同样有价值。我国能源紧缺是全局性、长期性的,随着西气东输管网建设与天然气应用还会有很大发展,在当前形 Preface The development of natural gas vehicles (CNG) has special significance for the areas of Sichuan and Chongqing. First of all, Sichuan and Chongqing lack of oil and gas, natural gas growth is rapid, and the gas pipeline network has been formed, followed by Sichuan and Chongqing emissions to improve the environment of great significance, the third in the current case of high oil prices, but also relatively reduce transport costs . It is equally valuable to the gas-producing areas in the country. China’s energy shortage is global, long-term, with the construction of natural gas pipelines and the West will have great development, in the current shape