Rolls-Royce launches new exhaust after-treatment system for marine propulsion systems | Rolls-Royce

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Rolls-Royce launches new exhaust after-treatment system for marine propulsion systems

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Tuesday 1 September 2026 12:00 PM

Rolls-Royce launches new exhaust after-treatment system for marine propulsion systems

Rolls-Royce is launching a new exhaust gas after-treatment solution designed to meet the most stringent IMO Tier III emission standards, thereby completing its portfolio for all major mtu marine propulsion systems. The new system is being certified for the mtu Series 2000 in collaboration with Eminox, a specialist in exhaust after-treatment systems. The SCR system enables offshore supply vessels, ferries and patrol boats fitted with mtu Series 2000 engines to operate in emission-controlled areas.

Unrestricted operation in IMO III emission-controlled zones with a new integrated exhaust after-treatment solution
Rolls-Royce expands its propulsion system portfolio for offshore vessels, ferries, crew boats and patrol boats

Rolls-Royce is launching a new exhaust gas after-treatment solution. It complies with the stringent IMO Tier III emission standards. This completes the company’s portfolio for the key mtu marine propulsion systems. The new system is being certified in collaboration with exhaust gas after-treatment specialist Eminox for Series 2000 mtu engines.

Exhaust gas after-treatment using selective catalytic reduction (SCR) enables offshore supply vessels, ferries and patrol boats fitted with engines from the mtu Series 2000 to operate in emission-regulated maritime areas. These include, amongst others, the North Sea and the Baltic Sea.

Dr Lukas Köhler, Senior Vice President Global Marine & Mining at Rolls-Royce Power Systems said:

With this new offering, all models in the mtu Series 2000 are now available with integrated SCR systems. We have already launched a new, flexible and compact solution for the more powerful mtu Series 4000. This enables us to equip our customers with future-proof propulsion systems to meet the challenges of modern shipping”

The new integrated solution offers ship operators several advantages: it is designed for a service life of up to 16,000 operating hours, depending on the load profile. It requires no compressed air for dosing and can be flexibly integrated into various ship designs.

As with vehicle powertrains, an aqueous urea solution reacts with the nitrogen oxides in the exhaust gases and converts them into harmless substances. The SCR system reduces nitrogen oxide emissions by 75 per cent compared with the IMO II limits.

Press photos for download can be found at Media Centre (mtu-solutions.com)

About Rolls-Royce Holdings plc

Rolls-Royce is a force for progress; powering, protecting and connecting people everywhere. Our products and service packages help our customers meet the growing need for power across multiple industries; enable governments to equip their armed forces with the power required to protect their citizens; and connect people, societies, cultures and economies together.
Rolls-Royce has a local presence in 47 countries and customers in over a hundred more, including airlines and aircraft leasing companies, armed forces and navies, and marine and industrial customers.
Through our multi-year transformation programme, we are building a high-performing, competitive, resilient and growing Rolls-Royce. We are building the financial capacity and agility to allow us to successfully develop and deliver the products that will support our customers through the energy transition.
Annual underlying revenue was £20.1 billion in 2025, and underlying operating profit was £3.46 billion.
Rolls-Royce Holdings plc is a publicly traded company (LSE: RR., ADR: RYCEY, LEI: 213800EC7997ZBLZJH69).
Rolls-Royce Power Systems is headquartered in Friedrichshafen in southern Germany and employs more than 11,000 people. The product portfolio includes mtu-brand high-speed engines and propulsion systems for ships, heavy land, rail and defence vehicles and for the oil and gas industry. The portfolio also includes diesel and gas systems and battery containers for mission critical, standby and continuous power, combined generation of heat and power, and microgrids. With its climate friendly technologies, Rolls-Royce Power Systems is helping to drive the energy transition.

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