Indicated Thermal Efficiency in IC Engine Formulas

Indicated Thermal Efficiency is the ratio of the usable work output of an engine to the total heat input from fuel combustion. And is denoted by η_i.

IC Engine formulas that make use of Indicated Thermal Efficiency

fxAir Standard Efficiency given Relative EfficiencyGo

What is the Indicated Thermal Efficiency?

Indicated Thermal Efficiency is the ratio of the usable work output of an engine to the total heat input from fuel combustion.

Can the Indicated Thermal Efficiency be negative?

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

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