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Old 29th Jan 2012, 17:52
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bookworm
 
Join Date: Aug 2000
Location: UK
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What equations did you use for that?
Equations? You make it sound fancier than it is! I guess it's

dU = -p dV

The trickiest bit is remembering that the cylinders expand twice per engine revolution. That's engineering, which is hard.
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