当前世界环境

Using alternative fuels for vehicles is of great importance even in developed countries. The current paper attempts to analyze the possible choices for passenger car fuel and to present an appropriate strategy for choosing an alternative fuel. In this regard, four types of fuels including gasoline as the current prevailing energy content in Iran were selected. The alternatives were LPG, CNG, and hydrogen. Potential strategies have been produced by using a continuous dynamic approach according to political, economical and social objectives. The strategies are statically and dynamically applicable. However, in this study the dynamical continuous approach was selected. The results show that hydrogen as a zero emission fuel is a suitable choice although the cultural and infrastructural obstacles exist against it. The second proposed fuel after gasoline is CNG which is the current choice of the country as an alternative fuel. The methodology presented herein can be extended to more alternatives and wider period in order to gain more comprehensive results.