Static Compression Ratio(CR) Calculator
This CR calculator is used to ratio between the volume of the cylinder and combustion chamber of piston engine.
Static Compression Ratio(CR) Formula:
Static compression ratio(CR) is the ratio between the volume of the cylinder and combustion chamber when the piston is at the bottom of its stroke and the volume of the combustion chamber when the piston is at the top of its stroke.It is therefore calculated by the following formula :
CR - Compression Ratio
b - cyclinder bore diameter in inches
s - piston stroke length in inches
Vc - minimum clearance volume at the end of compression stroke in in3