Brake thermal efficiency from SFOC and fuel NCV - ~50 % typical for slow-speed 2-stroke, 44 % for medium-speed 4-stroke.
Formula
$$ \eta_{BT} = \frac{3600}{SFOC \cdot NCV} $$Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $SFOC$ | Specific fuel consumption | g/kWh | shop test |
| $NCV$ | Net calorific value | MJ/kg | BDN |
Sources
- MAN ES / WinGD Performance.