未来汽车的主要方向就是节能减排，油改气正好迎合了时代发展的潮流，从安全知识方面入手油改气比汽油使用安全系数高，同时能量转换率也高于汽油，天然气本身就属于安全性燃料。
Future cars is the main direction of energy conservation and emissions reduction, the oil gas just cater to the trend of The Times, from the aspects of safety knowledge of oil to gas than petrol use safe coefficient is high, at the same time energy conversion rate is higher than that of gasoline, natural gas fuel itself belongs to security.
国家颁布有严格的天然气汽车技术标准。从加气站设计、储气瓶生产、改车部件制造到安装调试等，每个环节都形成了严格的技术标准。对高压系统使用的零部件，安全系数均选用1.5~4以上，在减压调节器、储气瓶上安装有安全阀，控制系统中安装有紧急断气装置。
Countries with strict technical standards of natural gas vehicle. Change from LPG station design, air cylinder production, car parts manufacturing to installation and debugging, etc., each link formed a strict technical standard. Using parts for high pressure system, the safety factor of 1.5 was used for the ~ 4 above, in the reduced pressure regulator, relief valve are installed on air cylinder, bilateral control system equipped with emergency device to snuff out.
天然气燃点在650℃以上，比汽油燃点（427℃）高出223℃，所以与汽油相比不易点燃。与空气的相对密度为0.48，泄漏气体很快在空气中散发，很难形成遇火燃烧的浓度。
Gas ignition point above 650 ℃, 223 ℃ higher than gasoline ignition point (427 ℃), so compared with gasoline is not easy to ignite. The relative density of 0.48, with air leakage gas in the air soon, it is difficult to form when the concentration of the fire burning.
释放过程是一个吸热过程。当压缩天然气从容器或管路中泄出时，泄孔周围会迅速形成一个低温区，使天然气燃烧困难。其次，压缩济南汽车油改气所用的配件比汽油车要求更高。
Release process is an endothermic process. When compressed natural gas emission from the vessel or piping, the drainage hole quickly formed around a low temperature zone, make gas combustion difficult. Second, compressed jinan automobile accessories used in the oil to gas demand higher than gasoline vehicles.
