classic case of reading tech and not understanding whats going on behind it

when you slide the powerband of an engine lower thru whatever means while maintaining the same max power output relative to any rpm without changing the displacement what happens? what kinds of things are you going to see with the engine....like manifold pressure, cylinder pressure, combustion chamber temperature for example? In other words, take a look at BSFC vs power vs rpm vs torque. It will bear out what Im getting at.

and on top of all this, you and your articles are avoiding one of the easier methods for increasing engine efficiency, and thats making use of all the unused heat which gets sent out the tailpipe and radiator, however, just like anything else its a tradeoff, there are no magic bullets here, never have been

smokey yunich(I think thats how his name is spelled) played with some of the combos you mentioned above about 30 years ago, also built some semi-adiabatic engines, results were good, until you get into practicality and longevity

all the technology in the world isnt going to make enough of a difference with ethanol im afraid, it has too many other problems besides what is involved with actually running it in an engine

oh ya, while im here, go ahead and post a reply, it wont be followed up on, Ive tried to have a decent discussion with you, the cute little eek smilies and sighs mean you arent interested anyway

maybe you should put your $$ where your mouth is, Ive built a few engines, ante up yourself and have at it, it isnt all that difficult, ive built two engines completely from scratch already, everything is a tradeoff