Hydrogen Internal Combustion Engine

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Cummins is interested [1]. The feasibility of ICE (as opposed to fuel cell) hydrogen power is diffusing into civilization.


Hear the guy mention that this style of engine is well-suited for hydrogen. High RPM (ok for generator). Titanium is required. Aluminum can work. 35 lb. $3500/unit in titanium structure. By https://astronaerospace.com/.


  • An Internal Combustion Engine that runs on Hydrogen as it's fuel
  • Often abbreviated as HICE
  • From Gov't pub - . Page 3-19 - hydrogen engines at zero emissions (running lean at 2x the stoichiometric oxygen) - produce half the power of comparable gasoline engines. Thus, they need to be 2x the size. This is still lighter than diesels, given that gas cars get 10x the Specific Power of diesels.

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