Bergen Engines

Bergen Engines headquarter at Horvikneset, Bergen

Bergen Engines AS is a diesel and gas engine manufacturer based in Bergen, Norway. The company is a fully owned subsidiary of Rolls-Royce Power Systems AG. The company's product line consists of various ranges of diesel and gas engines for the marine sector and land applications. Currently marketed engine platforms are the liquid fueled engines (diesel and heavy fuel oil) B32:40, the more modern B33:45 and the C25:33 and their gas fueled variants B35:40, B36:45 and C26:33, respectively. The power output of these engines range from 1.4 MW to 12 MW. Formerly part of Rolls-Royce Marine, it was merged into Tognum in July 2013,^[1] after Tognum had become a 50/50 joint venture between Rolls-Royce plc and Daimler AG.

History[]

The company started as a shipbuilding business called Bergen Mekaniske Verksted (BMV) in 1855 in Bergen, Norway. The facility had a machine workshop, foundry, forge and dry dock, for building of ships and steam engines to propel them. In 1942 BMV established their diesel engine division, but due to World War II a design was not completed before 1946. Engines were delivered in 1946 and 47 to the vessels MS Draupne and MS Arcturus. In 1984 the diesel engine division was spun off into its own company, BMV Maskin AS. It was acquired by Ulstein the following year and renamed Bergen Diesel AS.^[2]

In 1999 Ulstein Group was bought out by Vickers plc - Vickers was subsequently acquired by Rolls-Royce the same year. Rolls-Royce proceeded to rename every Ulstein subdivision to Rolls-Royce Marine, with Bergen Diesel being named Rolls-Royce Marine Engines - Bergen.^[3]

In March 2011 Rolls-Royce and Daimler launched a takeover for Tognum.^[4] The two companies announced on 24 June 2011 that their joint €3.4 billion tender offer had been successful, with 94% of Tognum shareholders accepting.^[5] In March 2014 Rolls Royce announced a buyout of the Daimler share of Tognum, which would then be known as Rolls Royce Power Systems.^[6]

On February 4, 2021 it was announced that Rolls-Royce had reached an agreement with Transmashholding International to sell the company for 150 million euro.^[7][8][9] The purchase by the Russian company was first put on hold because of security reasons, as the company is a supplier for the Norwegian navy.^[10] On March 26 The Norwegian government finalized its decision to block the sale "to ensure that the interest of national security are not threatened".^[11]

Engine range[]

The Bergen engine ranges are denoted by the letters C, B and K and are broadly divided by the power output as follows:

• Bergen K (dicontinued)
• Bergen C25:33 (liquid fueled), C26:33 (gas fueled)
• Bergen B32:40 (liquid fueled), B35:40 (gas fueled)
• Bergen B33:45 (liquid fueled), B36:45 (gas fueled)

for powers from 1,400 – 12,000 kW brake power.

These engines can all burn Marine Diesel Oil (MDO) and heavy fuel oil (HFO) and natural gas in gas configuration. Bergen Engines AS do not have any dual fuel engines.

They achieve specific fuel consumptions for liquid fuel between 183 and 196 g/kWh. Specific lubricant oil consumptions are of the order of 0.8 g/kWh for liquid fueled engine and 0.4 g/kWh for gas fueled engines.

Bergen K series (discontinued)[]

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 – 3970 kW 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.

Dry Masses[]

Bergen K engines have dry masses between 22500 and 30500 kg

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 (discontinued)[]

Also available as a gas engine for powers from 1190 – 3970 kW 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 B32:40 and 35:40[]

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 propulsion units or as generator sets for the provision of electrical power. The range includes in-line and Vee cylinder configurations. The liquid fuel engine has a cylinder bore of 320 mm and a stroke of 400 mm. The gas fueled engine has a 350 mm bore with the same stroke.

The Bergen B Series Marine Diesels have power outputs in the range 2,880 - 8,000 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 NO_x, CO, and UHC combined. It builds on the latest B diesel hardware, specifically redesigned and modified for the gas variant.

References[]