石油的代用燃料,最近以其作为解决大城市空气污染的能源之一,广泛地引起人们的注视。特别引人注目的是甲醇和天然气。但是各有优缺点,如甲醇有排放乙醛和发动机耐久性的问题,天然气有安全性的问题。另外,与柴油车和汽油车相比,甲醇汽车和天然气汽车都有行驶距离短的问题,因此应用受到限制,仍需在实用化方面进行工作。 As a substitute fuel for petroleum, it has recently attracted widespread attention as one of the energy sources for solving air pollution in big cities. Of particular interest are methanol and natural gas. However, each has its advantages and disadvantages, such as the problem that methanol has the problem of discharging acetaldehyde and engine durability, and the safety of natural gas. In addition, compared with diesel vehicles and gasoline vehicles, methanol vehicles and natural gas vehicles have a short driving distance, so the application is limited, still need to work in practical aspects.