Quote:
Originally Posted by bandit86
A gasoline vapour system, would it not get similar mpg as a propane as long as the btu is adjusted? Propane gas I'd perfectly vapourized as is the object of a gasoline vapour. Unless of course you can make more gasoline vapour from liquid. Steam is water expanded 1700 times
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The fact that we heat the fuel and air means the "Reactivity" of the mix has changed. That is why we see detonation in a gasoline engine that has too much engine heat and too much ignition lead. By heating the fuel/air mix, we enter this detonation regime. However, if we can adjust our ignition timing towards TDC ( top dead center ) we can avoid detonation and gain efficiency.
In a lean burn situation, the lazy, erratic combustion characterized by lean mixes can be fortified with a hot fuel/air mix and more torque derived from a lean AFR.
This is technology based on common knowledge science. Emissions production ( NOx ) is the reason we do not see this in production engines. However, NOx traps are now common and can mitigate the NOx. We will see what the future holds in this regard.