This recent poke at the ludicrous claims of an ebay car seller (
Running on plain Water and WVO??? Only at ebay!) got me to reading up on hydrogen injection (sometimes called hydrogen fumigation) systems.
Synopsis:
Onboard electrolysis of water to get H2 & O2 gas, feed them into the air intake. Supposedly provides about 10% better fuel economy, more power, lower emissions, and lower EGTs.
Obviously, thermodynamically speaking, it's a crock -- TANFL. Current theory seems to be that it achieves this benefit
despite the negative thermodynamics by causing all the diesel to actually combust, and do so in a way that allows more energy to be extracted as useful work. No perpetual motion machine or anything.. just squeezing work out of that last bit of incompletely combusted diesel.
What do you all think -- total crock or interesting technology?