机动车代用燃料性能比较

由于机动车对大气环境污染的贡献率越来越大，以及石油等能源面临枯竭，代用燃料逐渐进人人们的生活，如天然气、甲醇、乙醇、氢燃料和液化石油气等等。这些燃料因其物理、化学性质不同，所表现出来的动力性能、排放性能、经济性能和其他方面（如存储、运输、原料等）也有很大区别。通过比较得出，代用燃料比传统燃料更为清洁，但在其他方面还有待进一步改善。

THE COMPARISONS OF PROPERTIES OF VEHICLE REPLACEMENT FUEL

As the vehicles contributes to air pollution more and more, the fossil energies like petroleum become exhausted, the replacement filels are paid attention, such as natural gas, methanol, ethanol, hydrogen fuel and liquefied petroleum gas. The different physical and chemical properties cause the differences of power property, emission property, economic property and other aspects, such as storage, transportation and raw materials. Through comparison, the result shows the replacement fuels appears cleaner, but the other properties should be improved further.