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Old 03-29-2011, 12:19 PM   #11
jdmccright
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Re: Help me for design calculations

PI is pi. 3.14159265.... If you have to ask that question, then I would say that you have more than a little trouble on this project's calculations. Good luck.

[EDIT] I will also say that you can adjust the cylinder pressure for the change in gas temperatures as it is compressed and combusted using the same Ideal Gas law: PV=nRT, but you'd have to estimate the temperatures.
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Last edited by jdmccright; 03-30-2011 at 11:11 AM. Reason: Added info
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