IMEP vs BMEP

・In Japanese

■IMEP(Indicated Mean Effective Pressure)

IMEP is the pressure obtained from the P-V diagram shown below, which is obtained by subtracting the pump loss from the combustion pressure.

■BMEP(Brake Mean Effective Pressure)

BMEP is IMEP minus mechanical resistance. Converting this pressure to torque is the net torque available from the engine's output shaft.

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