The engine's response to HHO injection

[Nightwish]

Originally Posted by RoadWarrior

Interesting graph here...
http://www.transportation.anl.gov/tr...en_engine.html

It makes it appear that the limiting factor in getting better than 50% efficiency in a pure hydrogen motor is that it expands too damn fast, i.e. it exceeds the mechanical ability of reciprocating pistons to capture that power....

Ergo it would appear that H2 when moderated by a gasoline mixture i.e. as a small portion of it, would be capable of putting much more than 50% of it's energy to the crank...

Hmm..interesting. I wonder how it would behave with propane or ethanol? They burn cooler and cost less...