Originally Posted by furball69
He wants to know what what hypothetical stroke length it would require to get the pressure to 1 atmosphere. though the question has been reworded a few times.
Shall we assume engine is operating temperature and standard EGT (no idea what that would be... guessing 700 - 1000F) and typical heat losses of an IC engine?
Gas cools rapidly as it expands. That's all I know.
Assume standard combustion temperatures. Ignore engine operating temperature. I'm guessing that when it expands to the point that the pressure is equal to atmospheric, the temp will be around ambient.
Heck don't even put it in an engine. Have it in atmosphere for all I care.