H2 ICE
Under the hood of a hydrogen internal combustion engine
Hydrogen internal combustion engines (H 2ICE) work in a similar fashion to gasoline engines. Mazda uses a Wankel rotary engine and BMW, Ford and others use a piston engine, but the concept is the same.
A mixture of hydrogen gas and ambient air is drawn into the engine, where a spark ignites the H2. Hydrogen has a higher flame speed than gasoline, burning more quickly, so timing adjustments need to be made. Also, since H 2 is the smallest atom, it is prone to leaks, so couplings and fittings also need to be adjusted.