IMO Tier III certification for MTU marine engines from Rolls-Royce

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IMO Tier III certification for MTU marine engines from Rolls-Royce

22 March 2018

  • IMO Tier III compliance for Series 4000 engines demonstrated
  • Bilgin megayacht with IMO Tier III compliant propulsion system from MTU under construction

FRIEDRICHSHAFEN, GERMANY – The latest generation of MTU’s Series 4000 engines equipped with the SCR system for ships has successfully completed the IMO Tier III certification tests. Representatives of the ABS, BV, DNVGL, KR, NK, LR and RS certification bodies initially tested the 20-cylinder version, which was awarded approval as being representative of the remaining versions. This means that the engines now comply with the emission regulations in accordance with IMO MARPOL Annex VI, IMO Tier III. With a variety of technical advances to the turbocharging system, the combustion process and the injection system of the engines combined with MTU’s new SCR system, NOx emissions have been reduced by 75% compared with IMO II and particulate emissions by 65% compared with EPA Tier 3. An additional diesel particulate filter is not required.

For yachts and patrol boats the engines are currently available from MTU as 12, 16 and 20-cylinder versions for a power range extending from 2,160 to 3,900 kW. The first yacht to be fitted with an IMO Tier III propulsion system from MTU (2 x 16V Series 4000 M73 engines + 2 x SCR systems) is currently under construction at the Istanbul-based Bilgin Yachts shipyard. The 80-metre long megayacht is scheduled to be commissioned in mid-2019.

For work boats such as tug boats and ferries, MTU will gradually be introducing the engines complying with IMO Tier III and EPA Tier 4 emission regulations onto the market as 12, 16 and 20-cylinder versions covering a power range from 1,119 to 3,220 kW. The work boat engines will thus offer a 45 per cent increase in output compared with the predecessor versions and will thus be the only high-speed work boat engines delivering an output of up to 3,220 kW. In addition to power ships output and environmental compatibility, life-cycle costs were also a key focus during the development of the new MTU engines, the aim of which was to create significant benefits for ship owner/operators. As a result of improving the operating efficiency of the turbocharger, it was also possible to reduce fuel consumption by a further 5 per cent compared with the predecessor model. MTU has already delivered the first EPA Tier 4 propulsion systems for new catamarans operated by the WETA (Water Emergency Transportation Agency) in California.

Flexible: MTU’s new SCR system
MTU’s new integrated system consisting of propulsion system and SCR exhaust gas aftertreatment system, is requiring a minimum of space. It is designed for flexible installation and features an excellent power-to-weight ratio. The customer can switch between modes (IMO II and IMO III) during operation, in order to comply with the emission requirements of the region in which the yacht is sailing. MTU’s SCR system is fully controlled, with real-time NOx measurement both upstream and downstream of the SCR system. This ensures that the precise amount of reactant is introduced regardless of the conditions. Besides the IMO Tier III certified engines, MTU will continue to offer IMO Tier II engines.

Press photos are available for download from www.rrpowersystems.com/press

About Rolls-Royce Holdings plc

  1. Rolls-Royce pioneers cutting-edge technologies that deliver the cleanest, safest and most competitive solutions to our planet’s vital power needs.
  2. Rolls-Royce Power Systems is headquartered in Friedrichshafen in southern Germany and employs around 10,000 people. The product portfolio includes MTU-brand high-speed engines and propulsion systems for ships, power generation, heavy land, rail and defence vehicles and for the oil and gas industry. Under the MTU Onsite Energy brand, the company markets diesel gensets for emergency, base load and peak load applications as well as cogeneration plants using gas engines for the combined generation of heat and power. Bergen medium-speed engines power ships and power generation applications. L’Orange completes the portfolio with fuel injection systems for large engines.
  3. Rolls-Royce has customers in more than 150 countries, comprising more than 400 airlines and leasing customers, 160 armed forces, 4,000 marine customers including 70 navies, and more than 5,000 power and nuclear customers.
  4. Annual underlying revenue was £15 billion in 2017, around half of which came from the provision of aftermarket services. The firm and announced order book stood at £78,5 billion at the end of December 2017.
  5. In 2016, Rolls-Royce invested £1.4 billion on research and development. We also support a global network of 31 University Technology Centres, which position Rolls-Royce engineers at the forefront of scientific research.
  6. Rolls-Royce employs almost 50,000 people in 50 countries. More than 16,500 of these are engineers.
  7. The Group has a strong commitment to apprentice and graduate recruitment and to further developing employee skills. In 2016 we recruited 274 graduates and 327 apprentices through our worldwide training programmes.

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Rolls-Royce develops and delivers complex power and propulsion solutions for safety-critical applications in the air, at sea and on land.







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