[mikeayles]

I have done a deep dive here: https://www.mikeayles.com/blog/on-vehicle-hydrogen-generatio...

Short answer, it takes more energy to generate than the energy it produces.

You can do things like only producing electrical power from the alternator when decelerating, ensuring no load comes off the engine, but that would require accumulation as you're not actually burning fuel then either.

But running the numbers on the power requirements, I reviewed one commercially available system (at 12v 14A) and calculated that the HHO they are able to produce is 0.037% by energy going into the engine vs regular fuel.

When presented with 0.037% of the fuel substituted, their 10-15% claim on fuel savings becomes a bit of a red flag.

[trhway]

i meant hydrogen from regular fuel, not from water.

[Rygian]

Surely that's a thermodynamic waste? Use the energy in the fuel to extract hydrogen from the fuel to them use the energy in the hydrogen to generate electricity to turn the wheels.

Is there a chemical process that achieves this with a better efficiency than just using the fuel to turn the wheels?