The definition,features as well as advantages of bio-oil which is used as substitute fuel are presented in this article and the advantages and disadvantages of several other substitute fuels are analyzed,which shows that the process of bio-oil used as substitute fuel is an inexorable trend.

Through the analysis of CO,NO X and HC discharged from substitute fuel of motor vehicles,it's shown that the substitute fuel is good in minimizing tail gas pollution and protecting city environment.

LPG(Liquefied Petroleum Gas)was used as gasoline engine substitute fuel.

Measures of automobile fuel saving based on the alternate fuel;

Domestic and overseas developments in blend alternate fuels;

This paper introduces the latest development and application of the liquid alternate fuels,naturat gas and liquified gas of petroleum,alternate alkyl fuel for automobiles in foreign countries.