CNG、LPG汽车发展状况

由于环境保护要求的提高、汽车燃料的多样化、气体燃料储量丰富等原因，ＣＮＧ、ＬＰＧ汽车得到了较为迅速的发展，也引起了政府部门的高度重视把汽油车、柴油车改装成燃气汽车时，其动力性会有所下降，在相同燃料箱容积下续航里程会缩小，但燃料经济性、排放性有较大改善，若ＣＮＧ脱水脱硫较为彻底则气体燃料是较为安全的燃料目前，我国燃气汽车宜采用机械式供气系统，长远看应采用气体燃料电控喷射系统在柴油车上燃用气体燃料时，宜采用掺烧的形式；汽油车上燃用气体燃料仍可用电火花点燃，但压缩比、点火提前角、点火能量等应作调整目前，我国燃气汽车行业存在着管理混乱、标准规范的制定相对滞后、加气站发展缓慢、燃气设备及改装市场有待整顿等问题为充分发挥燃气的性能，应开发专门使用ＣＮＧ或ＬＰＧ的发动机

Development Survey of the CNG and LPG Vehicle

Because of the environment protection demands,vehicle fuel diversity and gas fuel richness,the CNG(Compressed Natural Gas) and LPG(Liquefied Petroleum Gas) vehicle have been developing rapidly in recent decades and received more attention of China government.When gasoline vehicle and diesel fuel vehicle are refitted into the gas vehicle,and the power may be reduced,their passage range may be smaller,but the economy and emission targets are excellent.If the dehydration and desulphurization of CNG is complete,gas fuel is quite safe.At present the gas supplying machinery system can be used in gas vehicle in China,and the electronic control gas fuel injection system should be adopted in the future.When using gas fuel in diesel fuel vehicle,mixing combustion of gas fuel with diesel fuel may be a suitable method,and in gasoline vehicle,the gas fuel can be ignited by spark plug,with the compression ratio,advanced ignition angle and ignition energy adjusted.Presently,the administration of the gas vehicle field is disorder,the drafting and issuing of standards and regulations are tardy,the development of gas delivery stations is slow,the markets of gas equipment and vehicle refitting needs to be rectified,and special CNG and LPG engines must be produced.