Single useful indicator of engine output intensity. BMEP = Pb·60·k / (V·N), where k=1 for 2-stroke, k=2 for 4-stroke.
Formula
$$ BMEP = \frac{P_b \cdot 60 \cdot k}{V \cdot N} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $P_b$ | Brake power | kW | NOx technical file |
| $V$ | Total swept volume | L (= dm³) | engine spec |
| $N$ | Engine rpm | rpm | tachometer |
| $k$ | 1 for 2-stroke, 2 for 4-stroke | - | engine type |
| $BMEP$ | Brake mean effective pressure | bar | result |
Sources
- Pounder’s Marine Diesel Engines.
- Heywood - Internal Combustion Engine Fundamentals.