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If you define dynamic compression ratio as the ratio of cylinder volumes between IVC and TDC, then you do have sufficient information to calculate it. First, calculate the TDC cylinder volume (probably what you've labeled chamber volume) Then calculate the piston position at the IVC angle, and the swept volume between that position and TDC.What is the formula to determine compression ratio?
PSI = X:Y*P Where PSI is the pounds per square inch X:Y is the compression ratio P is the pressure (typically standard atmospheric pressure (14.696)How do you calculate compression ratio?
To calculate the ratio for your vehicle, you need to use the formula, compression ration = volume at below dead center divided by volume at top dead center. This is not as simple as it sounds but if you know a few key measurements, you will be able to calculate the compression ratio.How do you convert compression ratio to Psi?
To calculate the pounds per square inch (psi) from the compression ratio, one needs the compression ratio and the atmospheric pressure measurement. Then, the first number in the compression ratio is multiplied by the atmospheric pressure, then divided by the second number in the ratio. For example,...