The compression ratio isn’t just a number: it’s one of the greatest determining factors in engine building. Compression ratio determines the type of fuel, how much boost, and has a significant ...

HOW TO CALCULATE COMPRESSION RATIO Compression ratio is a fixed relationship of cylinder volume with the piston at bottom dead center (BDC) divided by cylinder volume with the piston at top dead ...

You can learn how to calculate piston compression height with this easy guide. Click here for more details or check out the December 2012 issue of Hot Rod Magazine.

The larger the chamber, the more volume is added to the cylinder and the lower the compression ratio; smaller chambers reduce volume and increase the compression ratio.

Now that we know how to calculate a compression ratio, let’s dig a bit deeper into what compression ratio physically means when applied to a cooling system. In reciprocating compressors, there must be ...

Increasing compression ratio increases flame speed, extending the air-fuel ratio for peak efficiency an additional 0.1 lambda. Increasing combustion variability only affects the downward slope in ...