Quote:
Originally Posted by eco_modder
On some of the cylinder deactivation engines all the valves stay closed in that cylinder, too. So only a very small portion of energy is lost from pressurizing and depressurizing the air. Sort of like an air trampoline for that piston.
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Better to leave all the "dead" pistons with their valves open - constantly. Still take advantage of exhaust pulses, although not as much.
There was an experiment done *youtube, of all places* where someone ran the exhaust on his Geo 1.0 liter engine from 2 cylinders into the last cylinder in the firing order (I think it's 1 - 3 - 2, so 1&3 get run into 2) and just reburnt the exhaust gasses without introducing any more fuel or air into the mix.
I never thought into it very far, and I don't plan on it, but maybe someone could comment on the validity of something like that?
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