Relative Efficiency in IC Engine Formulas

The Relative Efficiency compares engine’s actual thermal efficiency to the efficiency of a theoretical ideal cycle. It reflects how close the real engine gets to the maximum theoretical performance. And is denoted by η_r.

IC Engine formulas that make use of Relative Efficiency

fxAir Standard Efficiency given Relative EfficiencyGo

FAQ

What is the Relative Efficiency?

Can the Relative Efficiency be negative?

{YesorNo}, the Relative Efficiency, measured in {OutputVariableMeasurementName} {CanorCannot} be negative.

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