Welcome to Journal of Automotive Safety and Energy,

Journal of Automotive Safety and Energy ›› 2023, Vol. 14 ›› Issue (1): 1-16.DOI: 10.3969/j.issn.1674-8484.2023.01.001

• Review, Progress and Prospects •     Next Articles

Review on the research and development trends and prospects for argon closed cycle hydrogen engines

CHEN Zhili()   

  1. Department of Mechanical Engineering, Faculty of Engineering, Tokai University, Hirazuka City 259-1292, Kanagawa Prefecture, Japan
  • Received:2022-11-24 Online:2023-02-28 Published:2023-03-06

Abstract:

Internal combustion engines must operate with zero CO2 emissions in order to follow the trend towards carbon neutrality and avoid obsolescence in the second half of the 21st century. Furthermore, as the maximum effective thermal efficiency of engines is significantly lower than that of electric or fuel cell vehicles, this will gradually alienate consumers from engine vehicles. Under the background, the argon (Ar) closed cycle hydrogen engine, which was invented by F. M. Lewis in 1948, is back in the spotlight. This is because these engines do not emit CO2 and because the specific heat ratio of Ar is higher than that of air, the thermal efficiency of an Ar-based engines can be increased significantly and even be comparable to that of electric or fuel cell vehicles. This paper describes in detail the principle of this engine, its development history, advantages and disadvantages, research trends, and research and development topics. Some of the authors’ recent research results are presented. Finally, the relationship between this engine and hydrogen and fuel cell vehicles and its development prospects are discussed.

Key words: Argon closed cycle hydrogen engine, CO2 zero emission engine, thermal efficiency, fuel cell vehicle

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