As a secondary clean energy source, hydrogen energy has become an important direction of global energy structure transformation, and an important support for green and low-carbon development of road transportation system. Hydrogen fuel cell vehicle and hydrogen-fueled engine vehicle are two major technology routes of hydrogen energy application and complement each other. In order to analyze the maturity and actual development trend of the two major technology routes, this paper carries out research by literature review. The development of hydrogen fuel cell vehicles has begun to take shape but still faces many uncertainties, and hydrogen fuel engine vehicles are accelerating into engineering application stage. The final product form of hydrogen powertrain and automobile depends on the cost and technology maturity of hydrogen production from green electricity.

Hydrogen energy  /  Hydrogen powertrain  /  Fuel cell electric vehicle  /  Hydrogen-fueled engine vehicle