Quote:
Originally Posted by oil pan 4
Not on a gas engine.
Diesels and gas turbines respond well to water injection.
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I would think that a wankel would be near perfect for design similar to the 6 stroke system
(it would switch between two gas power cycles/rotation and one gas and one water power cycle per rotation).
Pros:
wankel combustion chamber is a disaster. Plenty of heat to use.
wankel doesn't require extra cams. Might need direct injection (of both fuel and water)
No extra cams means you can switch back to standard operation (important since virtually all wankels left are either sports cars or sport coups). Might not be needed considering just how much heat is lost in a wankel.
RX-8s have such bad stock mileage that they are reasonably priced (if you can fix the gas thirst).
Cons:
You still have a compression cycle you don't want. Getting rid of it would likely require building the whole block from scratch.
A huge project if it requires direct injection (for the fuel, I assume water injection wouldn't require quite the controls/pressure issues, but you never know once the air hits the compression cycle.)