The features, production technologies, economy, application and prospect of several new types of foreign substitute diesels are described, such as biological diesel, ethanol diesel, dimethyl ether and emulsified diesel as well as the oxygen compound blended into diesel to improve its performance.

To produce more quality automobile diesel with low cost, we must pay more attention to the development of catalysts and processes for deep removing sulfur and aromatics from diesel and for increasing diesel's octane number.

The developing trend of automobile diesel in the past several years in most of the countries in the world is mainly characterized by highlighting the reduction of sulfur,increasing cetane number and further reducing aromatics and polycyclic aromatics etc in diesel.