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originally posted by: lordcomac
I've spent a fair bit of time researching the HHO generators.
I'd love to put one in a car someday, but I don't have the time/resources to properly test it.
The argument against it is it's using up electricity to break down water into H, H, and O- which is then burned to spin the engine which turns the alternator to generate the electricity. Since the engine design is pathetically inefficient (I want to say piston engines are in the 12% efficiency range, but would have to look it up) and the alternator isn't anywhere near 100% efficient, it can't possibly generate as much energy as it takes to run.
This is a basic principle in the whole perpetual motion argument.
However, there seems to be almost no real research on the effects of adding hydrogen and extra oxygen to the gasoline/ethanol combustion process.
Lots of people claiming these hho systems give them 4-12 percent boosts in cars, though. On the other hand, 10% is easy to get by driving differently- so it could be the placebo effect.
Either way, I'd love to try it myself someday