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Compression Ratio in IC Engine Formulas

Compression ratio refers to how much the air-fuel mixture is squeezed in the cylinder before ignition. It’s essentially the ratio between the volume of the cylinder at BDC to TDC. And is denoted by r.

IC Engine formulas that make use of Compression Ratio

fxMean Effective Pressure in Otto Cycle​Go
fxMean Effective Pressure in Diesel Cycle​Go
fxMean Effective Pressure in Dual Cycle​Go
fxWork Output for Otto Cycle​Go
fxWork Output for Diesel Cycle​Go
fxWork Output for Dual Cycle​Go
fxAir Standard Efficiency for Diesel Engines​Go
fxAir Standard Efficiency for Petrol engines​Go
fxThermal Efficiency of Otto Cycle​Go
fxThermal Efficiency of Diesel Cycle​Go
fxThermal Efficiency of Dual Cycle​Go
fxThermal Efficiency of Atkinson Cycle​Go
fxThermal Efficiency of Stirling Cycle given Heat Exchanger Effectiveness​Go

FAQ

What is the Compression Ratio?
Compression ratio refers to how much the air-fuel mixture is squeezed in the cylinder before ignition. It’s essentially the ratio between the volume of the cylinder at BDC to TDC.
Can the Compression Ratio be negative?
{YesorNo}, the Compression Ratio, measured in {OutputVariableMeasurementName} {CanorCannot} be negative.
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