Quote:
Originally Posted by mechman600
Quote:
Originally Posted by mwebb
peak combustion pressure must happen at about 14 degrees after top dead center
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Is this true will all engines? Four stroke/two stroke? Gas/Diesel? etc...
Just curious. I have never heard the 14 degree ATDC figure before. |
Peak pressure can happen anywhere in the expansion stroke, but 14 degrees is best for converting burning fuel into motion.
It's true for all piston engines where a reciprocating piston is connected to a crank via a connecting rod. 14 degrees ATDC is where the piston-rod-crank leverage is optimum. It is just geometry so: Otto, Diesel; 6, 4, or 2 stroke; any fuel... doesn't matter.
-mort