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I did a hydrogen experiment a few months back. 200 cu ft. tank. Used an adjustable regulator. Used an electric fuel shutoff solenoid to control introduction into airstream before the throttle valve. Without hydrogen assist 36mpg. At 5psi setting about 70 cu ft. per hr. 40mpg. 10psi setting about 100 cu ft. per hr. 45 mpg. There have been a number of papers published on hydrogen enhanced combustion. Their conclussions seem to be in line with the results I was able to obtain. Using brute force electrolysis to generate hydrogen on the fly to get you further down the road on a given amount of fuel seems to not work. I suspect there is something to be gained by using pulse width modulation to increase the yield for electrical energy input. With all the Stan Meyer disciples out there I still haven't seen anything of substance suface. Conclusion hydrogen has some desirable combustion characteristics. Downside cost is high per energy density.
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