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重庆油改气-CNG汽车发展史
天然气汽车在世界上已有70多年的历史。20世纪20年代末、30年代初,原苏联、意大利人为解决车用汽油短缺问题,率先开发了常压囊式天然气汽车和CNG汽车。到20世纪80年代,由于石油危机加重,改善环境的呼声日渐高涨和压缩机技术的不断进步,天然气汽车获得较快发展。自20世纪90年代以来,天然气汽车发展的要素进一步成熟,俄罗斯、美国等国分别成立了天然气汽车协会。
根据世界燃气汽车协会的最新统计,截止到2008年3月,全世界天然气汽车总量超过850万辆,近几年天然气汽车的年均增长率超过30%;天然气加气站则超过了12000座。阿根廷、巴基斯坦、巴西、印度、伊朗和意大利的天然气汽车保有量居世界前六位。近几年亚太地区的天然气汽车发展迅速,2000-2007年之间年均增长50%。在汽车天然气改装方面,阿根廷的产品尤其是减压阀研发和生产处于世界领先水平
近几年,西气东输、忠武线等长输管道的建设投产,大大推动了中国天然气需求的增长,天然气市场消费量呈现爆发性增长。“十五”期间,中国天然气消费量年均增长15%,2005年天然气消费量达到460亿立方米,是2001年264亿立方米的1.74倍;2007年全国天然气消费量达到675亿立方米,比2006年增长130亿立方米,约占我国一次能源消费的3.4%。国内天然气供应量呈现快速增长态势,预计到2015年可供商品量有望超过2400亿立方米,比2007年增加1400亿立方米以上,这将为发展天然气汽车提供充足的资源保障。同时,由于天然气供应量快速增加,未来3~5年在局部地区可能出现天然气供过于求的态势。天然气用于汽车燃料,由于价格低环保等优势,因而必将成为一个重要的发展方向。

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