PRESS RELEASE Naval Solutions

Rolls-Royce further develops mtu Series 1163 and 8000 engines for IMO III

Posted on September 07, 2022

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  • Further development of engines of all cylinder variants with customised mtu exhaust gas aftertreatment
  • Available from 2025, outputs between 4,800 and 10,000 KW
  • Release for sustainable fuels planned from 2025  

Rolls-Royce is further developing its proven large marine engines of the mtu 1163 and 8000 series to comply with the IMO Tier III emissions directive, the company announced at the SMM marine trade fair. From 2025, the engines are to be available in all cylinder variants – 16 and 20V respectively – in the power range between 4,800 and 10,000 KW. They will allow entry into the so-called Emission Controlled Areas (ECA), for example in the Baltic and North Seas and off the North American coast. Rolls-Royce is developing the necessary exhaust gas aftertreatment with SCR system itself in order to be able to adapt it precisely to mtu engines and customer requirements. The company is also aiming to become an IMO emissions certificate holder, which would significantly reduce the workload for shipyard customers. The engines are to be approved for operation with sustainable fuels (EN15940, e.g. HVO) in the course of 2025.  

Klaus Schmidt, Director Naval Application Engineering at Rolls-Royce business unit Power Systems, says: “With the decision to further develop our mtu Series 1163 and 8000 engines for the strict IMO Tier III emission requirements, we are giving our customers planning security. At the same time, we are making our mtu large engines, which have set standards in their power range for many years in terms of power density, efficiency and economy, future-proof and more climate-friendly.”  

In developing the new engine variants, Rolls-Royce pays particular attention to maintaining a maximum of common parts to the current versions in order to simplify maintenance and logistics. The electronics of all new engines are brought up to date. The most important change compared to the previous engines for IMO II is the new exhaust gas aftertreatment, the core component of which is an SCR system in which nitrogen oxide emissions are reduced by 75 percent compared to the IMO II limits. It is a closed system in which the emissions upstream and downstream of the SCR system are continuously measured. This ensures optimal and compliant operation of the exhaust gas aftertreatment system.  

Rolls-Royce’s aim in developing the SCR system is to give its customers maximum installation flexibility: The system can be installed both horizontally and vertically and can thus be adapted to a wide variety of ship designs and layouts. For military applications, the SCR system can be ordered shockproof if required.  

mtu engines of the 1163 and 8000 series have proven themselves for many years in frigates, corvettes and offshore patrol vessels (OPV) as well as fast ferries and yachts, among others, all over the world. Rolls-Royce has also further developed its marine engines of the mtu 2000 and 4000 series for IMO III. These are already certified and available.  

About Rolls-Royce Holdings plc

  1. Rolls-Royce pioneers the power that matters to connect, power and protect society. We have pledged to achieve net zero greenhouse gas emissions in our operations by 2030 (excluding product testing) and joined the UN Race to Zero campaign in 2020, affirming our ambition to play a fundamental role in enabling the sectors in which we operate achieve net zero carbon by 2050.
  2. Rolls-Royce Power Systems is headquartered in Friedrichshafen in southern Germany and employs around 9,000 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 as well as diesel and gas systems and battery containers for mission critical, standby and continuous power, combined generation of heat and power, and microgrids and is intensively engaged in the development of climate-neutral solutions.
  3. Rolls-Royce has customers in more than 150 countries, comprising more than 400 airlines and leasing customers, 160 armed forces and navies, and more than 5,000 power and nuclear customers.
  4. Annual underlying revenue was £10.95 billion in 2021, underlying operating profit was £414m and we invested £1.18 billion on research and development. We also support a global network of 28 University Technology Centres, which position Rolls-Royce engineers at the forefront of scientific research.
  5. Rolls-Royce Holdings plc is a publicly traded company (LSE:RR., ADR: RYCEY, LEI: 213800EC7997ZBLZJH69).


Rolf Behrens Spokesman Trade Media Mobile Power Solutions
+49 7541 90 3461