Quote:
Originally Posted by JapaneseJeep
This last paragraph captures exactly the spirit of what I'm after. Is it going to be the best option? Absolutely not. Is it going to be a little silly and of questionable commercial value? Sure... but what I want is to know whether or not it will make a significant MPG increase, all other factors be damned.
Now the question is how well this will actually translate when I simply don't have access to the equipment or know-how needed to safely and efficiently bottle my generated hydrogen/HHO.
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Botting high pressure hydrogen is dangerous and expensive, but assuming you can do it, the gains would be proportional to how much hydrogen you can carry/inject. Most HHO systems amount to a tiny fraction of a percent.
Engineering Explained released a video on hydrogen combustion just a few days ago. IIRC, the conclusion he came to was that, for a very efficient V8, a 60L tank (think large street-side trash bin) filled to 5000PSI with hydrogen would be good for around 60 miles of hydrogen-only range. If you're going half and half with gasoline, you could double your fuel economy for the first 120 miles with a tank just about the size of the rear passenger compartment in most sedans.
With a much more efficient engine, say a Geo Metro 3 cylinder, you could get the same doubling of economy for around 500 miles per hydrogen fill.