Combustion characteristics and energy distribution of hydrogen engine under high oxygen concentration

Hongyu Fu, Qinghe Luo, Lingzhi Bao, Baigang Sun, Qingyu Niu, Shiwei Zhang, Hao Zhang*

*Corresponding author for this work

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Abstract

Integrated Vehicle Fluid (IVF) system is a promised energy management system for cryogenic upper stage. The power unit of IVF is hydrogen-oxygen internal combustion engine (ICE) whose energy utilization is close to 100% in IVF system. The oxygen concentration of intake gas was gradually raised during ICE tests as a preliminary study. The power of hydrogen-oxygen ICE reaches 4 kW at 3000 r/min, which satisfies the power requirement of IVF system. At this time, the exhaust loss reaches 41.6%, the heat transfer loss is 35.9%, and the output power only accounts for 21.9%. The heat transfer loss shows a parabolic trend which first rises and then falls with increasing oxygen concentration. But the exhaust loss keeps growing with the increases in oxygen concentration and engine speed. It is significant for the design of regenerative cooling system and other subsystems in IVF system at specific engine speed.

Original languageEnglish
Pages (from-to)38031-38042
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume47
Issue number89
DOIs
Publication statusPublished - 1 Nov 2022

Keywords

  • Energy distribution
  • High oxygen concentration
  • Integrated vehicle fluid system
  • Internal combustion engine
  • Performance

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Fu, H., Luo, Q., Bao, L., Sun, B., Niu, Q., Zhang, S., & Zhang, H. (2022). Combustion characteristics and energy distribution of hydrogen engine under high oxygen concentration. International Journal of Hydrogen Energy, 47(89), 38031-38042. https://doi.org/10.1016/j.ijhydene.2022.08.287