Compression ratio and compression test readings.

[Howard Chu]

> Date: Wed, 17 Oct 2001 15:06:53 -0400
> From: "Ray Drouillard" <RayLists at quixnet.net>

> Since you heat the air when compressing it, your pressure will be higher
> than the standard P1*V1 = P2*V2 equation would dictate.  In fact, you have
> to use the more complete P1*V1/T1 = P2*V2/T2.  Unfortunately, that leaves
> you with two unknowns and only one equation.  It's been a long
> time since I
> have messed with those equations very much, but I believe that finding the
> specific heat capacity of air and finding the appropriate equation will do
> the trick.

I recall seeing the formulas in the Bosch Automotive Handbook. I've
incorporated those formulas in my turbosize spreadsheet.
  http://people.we.mediaone.net/hyc/dyno/turbosize.xls

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