First High-speed MTU Gas Engines for Marine Use
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rst High-speed MTU Gas Engines for Marine Use The growing number of emission-controlled areas and tighter emission limits imposed by existing legislation are forcing international shipping operators to make huge emission cuts. Low gas prices and long-term availability nearly everywhere in the world including a growing fueling infrastructure is paving the way for natural-gas-fueled vessel designs as an important first step toward decarbonization. Rolls-Royce commissioned its first new MTU pure gas engines for marine propulsion in June 2020.
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AUTHORS © Rolls-Royce
Dipl.-Ing. Stephan Menzel is Project Manager Gas Engine Development at Rolls-Royce Power Systems in Friedrichshafen (Germany).
Dipl.-Ing. Friedrich Köskemeier is Senior Manager Gas Engine Development at Rolls-Royce Power Systems in Friedrichshafen (Germany).
Dr.-Ing. Carsten Baumgarten is Director of Gas Engine Development at Rolls-Royce Power Systems in Friedrichshafen (Germany).
Dipl.-Ing. Peter Kunz is Project Manager New Products at Rolls-Royce Power Systems in Friedrichshafen (Germany).
MOTIVATION
Based on the proven MTU Series 4000 design and using the expertise gained from Bergen medium-speed gas engines, Rolls-Royce has developed a high-speed, pure gas marine engine for use on me chanical direct-drive vessels. The 8-V and 16-V configurations cover a power range from 746 to 1492 kW, meeting the latest IMO Tier III emission legislation. The main drivers for using natural gas as alternative fuel in the maritime industry are the need to reduce exhaust emissions, low gas prices compared to crude-oil-based fuels, long-term avail ability, and a growing infrastructure for LNG (Liquefied Natural Gas) refueling. In fact, natural gas offers a range of benefits: it is available in almost every part of the world as a natural resource for coming generations, and price fluctuations are relatively low. The international shipping industry, like other sectors of industry, is making a great effort to significantly reduce emissions. The International Maritime Organization (IMO) has announced a decarbonization target of 50 % by 2050, and more stringent air quality regulations such as the IMO low sulfur standard are also on the horizon. The IMO Tier III emission requirements for NOx have been in force since MTZ worldwide 11|2020
2016 in Emission Controlled Areas (ECAs) in North America and parts of the Caribbean. In addition, the North and Baltic Seas have now also been designated as ECAs with regard to NOx for ships built from 2021 onward. As the world moves toward fully decarbonized propulsion, sustainable fuels are the only way forward. Using natural gas is the first important step down this road as its lower carbon content reduces CO2 emissions. Moving forward, the next step for marine propulsion and power generation will be to develop the technology to burn “green” gas produced climate-neutrally. This Power-to-Gas (PtG) concept features a closed carbon loop. The mobile MTU gas engine is already well below the current emission guideline limits (IMO Ti
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