Rolls-Royce Bergen K series
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The Bergen K marine diesel and gas engines are a range of marine internal combustion engines manufactured by Rolls-Royce plc.
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[edit] Mechanical configuration
The Bergen K lean burn marine engines with 250mm bore and 300mm stroke is available as a diesel in 6, 8 and 9 cylinder in-line configurations for propulsion and auxiliary duties.
Features:
- Rigid crankcase minimises deformations and ensures good main bearing alignment
- BMEP 20-22 bar (gas engine 18bar)
[edit] Power Outputs
The diesel power range is from 1215-2005 kW. Also available as a gas engine for powers from 1190 – 3970kW the Bergen K-G4 lean burn gas engine is the result of careful development based on the Bergen K.
[edit] Fuels and Consumption
- Lub oil consumption approx 0.8g/kWh
- Specific fuel consumption 193-196 g/kWh (8060kj/kWh gas) due to turbocharger design and modern fuel injection technology
The lean burn principle of the K-G4 gas engines operation combines high power and high efficiency coupled with reduced exhaust emissions, and delivers a specific fuel consumption of 7990-8060kj/kWh. Engines in service burn natural gas and also other fuels such as gas derived from landfill and from fermentation of effluents.
[edit] Development
Bergen lean burn spark ignition technology was first developed more than fifteen years ago and has proved very popular for power generation on land.
[edit] Dry Masses
Bergen K engines have dry masses between 22500 and 30500kg
[edit] Longevity
These marine diesel and gas engines have design lives of more than 20 years and engines are installed in more than 150 power plants throughout the world.
