Rolls-Royce Marine Diesel Engines
Encyclopedia
Rolls-Royce Marine Diesel Engines are manufactured by Rolls-Royce plc
and cover five ranges of diesel engine
s for the marine sector.
There are three "Bergen" and two Crossley Pielstick
ranges with power outputs in the range 1.2MW to 15MW.
, B and K and are broadly divided by the power output as follows:
for powers from 1200 – 8,000kW,
for powers of 1190kW – 8750kW.
These engines can all burn Marine Diesel Oil (MDO) and Heavy Fuel Oil
(HFO).
They achieve specific fuel consumptions of between 183 and 196g/kWh. Specific lubricant oil consumptions are of the order of 0.8g/kWh.
Two of the Bergen marine engine variants may be fuelled by natural gas.
Features:
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.
units or as generator
sets for the provision of electrical power. The range includes in-line and Vee cylinder configurations.
The Bergen B Series Marine Diesels have power outputs in the range 2,545 - 5,300 kilowatts
These engines have a reputation for being "a Rolls Royce product" in terms of quality which is ironic because when they were designed, the company was not part of the Rolls Royce organization.
The Bergen B35:40 gas engine has high power and efficiency in the 720-750 rpm class and, is designed for low emissions of NOx
, CO
, and UHC
combined. It builds on the latest B diesel hardware, specifically redesigned and modified for this gas variant.
Manufactured under licence by Rolls-Royce plc
, these engines are designed and developed specifically to burn heavy residual fuels. The Pielstick PA range of diesels offers cylinder configurations ranging from 6 to 20 and a power range of 1950 to 8910 kW.
S.E.M.T Pielstick PC2.6 & PC2.6B
These models are rated for Naval applications to run at 520/600 rpm respectively, with power outputs in the 6 to 15 MW range.
Rolls-Royce plc
Rolls-Royce Group plc is a global power systems company headquartered in the City of Westminster, London, United Kingdom. It is the world’s second-largest maker of aircraft engines , and also has major businesses in the marine propulsion and energy sectors. Through its defence-related activities...
and cover five ranges of diesel engine
Diesel engine
A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...
s for the marine sector.
There are three "Bergen" and two Crossley Pielstick
SEMT Pielstick
SEMT Pielstick is a French diesel engine manufacturer based in Villepinte, France and owned by MAN Diesel, a subsidiary of MAN AGSEMT Pielstick was formed in 1988 when the business was acquired from GEC Alsthom by MAN and MTU, originally as a 50/50 partnership...
ranges with power outputs in the range 1.2MW to 15MW.
Bergen Range
The Bergen marine diesel ranges are denoted by the letters CRolls-Royce Bergen C series
The Bergen C liquid fuel series is a compact reciprocating internal combustion engine manufactured by Rolls-Royce plc.-Design Duties:Capable of running on heavy fuel oil, it has been designed for genset and marine propulsion duties for powers from 1440 to 2700 kW.The Bergen C liquid fuel...
, B and K and are broadly divided by the power output as follows:
- Bergen K,
- Bergen C and;
- Bergen B32:40
for powers from 1200 – 8,000kW,
- Bergen KG 4.2 and;
- Bergen B35:40
for powers of 1190kW – 8750kW.
These engines can all burn Marine Diesel Oil (MDO) and Heavy Fuel Oil
Fuel oil
Fuel oil is a fraction obtained from petroleum distillation, either as a distillate or a residue. Broadly speaking, fuel oil is any liquid petroleum product that is burned in a furnace or boiler for the generation of heat or used in an engine for the generation of power, except oils having a flash...
(HFO).
They achieve specific fuel consumptions of between 183 and 196g/kWh. Specific lubricant oil consumptions are of the order of 0.8g/kWh.
Two of the Bergen marine engine variants may be fuelled by natural gas.
Bergen K series
The Bergen K marine diesel and gas engines are a range of marine internal combustion engines manufactured by Rolls-Royce plc.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)
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.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.
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.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.Bergen K-G4
Also available as a gas engine for powers from 1190 – 3970kW the Bergen K-G4 lean burn gas engine is the result of development based on the K type diesel and heavy fuel oil engine parent.Bergen B35:40
The Bergen B Series is a twenty year old (est. 1986) marque of reciprocating diesel engines. They serve a wide range of ocean-going vessels and; can be supplied as propulsionMarine propulsion
Marine propulsion is the mechanism or system used to generate thrust to move a ship or boat across water. While paddles and sails are still used on some smaller boats, most modern ships are propelled by mechanical systems consisting a motor or engine turning a propeller, or less frequently, in jet...
units or as generator
Electrical generator
In electricity generation, an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electric charge to flow through an external electrical circuit. It is analogous to a water pump, which causes water to flow...
sets for the provision of electrical power. The range includes in-line and Vee cylinder configurations.
The Bergen B Series Marine Diesels have power outputs in the range 2,545 - 5,300 kilowatts
These engines have a reputation for being "a Rolls Royce product" in terms of quality which is ironic because when they were designed, the company was not part of the Rolls Royce organization.
The Bergen B35:40 gas engine has high power and efficiency in the 720-750 rpm class and, is designed for low emissions of NOx
Nitrogen oxide
Nitrogen oxide can refer to a binary compound of oxygen and nitrogen, or a mixture of such compounds:* Nitric oxide, also known as nitrogen monoxide, , nitrogen oxide* Nitrogen dioxide , nitrogen oxide...
, CO
Carbon monoxide
Carbon monoxide , also called carbonous oxide, is a colorless, odorless, and tasteless gas that is slightly lighter than air. It is highly toxic to humans and animals in higher quantities, although it is also produced in normal animal metabolism in low quantities, and is thought to have some normal...
, and UHC
Unburned hydrocarbon
Unburned hydrocarbons are the hydrocarbons emitted after petroleum is burned in an engine.Any fuel entering a flame will be reacted. Thus, when unburned fuel is emitted from a combustor, the emission is caused by fuel "avoiding" the flame zones...
combined. It builds on the latest B diesel hardware, specifically redesigned and modified for this gas variant.
Crossley Pielstick range.
Pielstick PA6 STC and PA6B STCManufactured under licence by Rolls-Royce plc
Rolls-Royce plc
Rolls-Royce Group plc is a global power systems company headquartered in the City of Westminster, London, United Kingdom. It is the world’s second-largest maker of aircraft engines , and also has major businesses in the marine propulsion and energy sectors. Through its defence-related activities...
, these engines are designed and developed specifically to burn heavy residual fuels. The Pielstick PA range of diesels offers cylinder configurations ranging from 6 to 20 and a power range of 1950 to 8910 kW.
S.E.M.T Pielstick PC2.6 & PC2.6B
These models are rated for Naval applications to run at 520/600 rpm respectively, with power outputs in the 6 to 15 MW range.