Brake Mean Effective Pressure (BMEP)

Single useful indicator of engine output intensity. BMEP = Pb·60·k / (V·N), where k=1 for 2-stroke, k=2 for 4-stroke.

Engine

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

BMEP = \frac{P_b \cdot 60 \cdot k}{V \cdot N}

Symbol	Meaning	Unit
$P_b$	Brake power	kW
$V$	Total swept volume	L (= dm³)
$N$	Engine rpm	rpm
$k$	1 for 2-stroke, 2 for 4-stroke
$BMEP$	Brake mean effective pressure	bar

Source: Pounder's Marine Diesel Engines; Heywood - Internal Combustion Engine Fundamentals

Single useful indicator of engine output intensity.