MTEE presents its IMO Tier III solution to the market

published on 2021 03 25

Mitsubishi Turbocharger and Engine Europe B.V. (MTEE) presents a new engine after-treatment solution to comply with the IMO Tier III regulations. It combines its proven mechanical engines with a certified Selective Catalytic Reduction (SCR) system. The SCR system is fully optimized and tested on cost-efficiency, quality requirements and meets the IMO Tier III environmental regulations.


“With this new solution we can offer our customers a cleaner auxiliary generator and propulsion system, compliant with the latest regulations and according to Mitsubishi standards.” says Ron Slenders, MTEE’s Product Manager for Marine.

The first IMO Tier III certified product to be released with an after-treatment system is the S12R-MPTAW, a 12-cylinder auxiliary engine that is used in a wide range of marine applications such as ferries and tankers. The engine has an output of 1120 kW at 1500 rpm and 1154 and 1270 kW at 1800 rpm and is also available as a Mitsubishi Generator Set for marine. The next model that is now being tested and developed is the S12A2-MPTAW for propulsion (727 to 818 kW) and auxiliary generator (709 to 828 kW) application.

The SCR system is developed and customized to the specific engine and operations. This is done in close collaboration between MTEE engineering team, Mitsubishi Heavy Industries Engine Turbocharger Ltd. (MHIET), the global headquarter for Engine and Generator Sets of Mitsubishi Heavy Industries Group, and the SCR partner; GESAB. GESAB, based in Sweden, is an experienced partner offering SCR systems to the marine market for more than 10 years. The product quality, scalability and compatibility with MTEE’s full engine and generator set lineup, were key considerations in the selection process.

Next to the IMO emission tests and certification, extensive testing has taken place in-house to guarantee MHIET’s high-quality standards of the engine and after-treatment system. This to identify and solve risks at the earliest possible stage and ensure the quality of the system even under tough environmental and system conditions. The urea use is balanced for the exhaust gas to meet the IMO Tier III regulations, limit the ammonia slip and be highly cost-efficient. As the lineup is based on the IMO Tier II engines, it is possible to switch off the SCR system outside of the emission control areas to make the operations more economical.

The SCR system exists out of the SCR reactor, injection unit, dosing unit and soot blower system. The SCR reactor is available in a horizontal and vertical setup and has multiple connection points to create flexibility of installation. The full system is tested and certified in-house, ensuring a swift installation with no further certification requirements for the IMO Tier III regulations at the shipyard.

From January 2021, IMO Tier III regulations for commercial vessels with a total output of more than 130 kW has come into force. The new regulation prescribes an average NOx reduction of 75% compared to the IMO Tier II levels for vessels operating in the North Sea and Baltic Sea Emission Control Areas.

About Mitsubishi Turbocharger and Engine Europe
MTEE provides diesel and gas engine solutions and generator sets for marine, industrial, construction, agricultural and integrated power plant applications. MTEE operates in the regions; Europe, Russia, Middle East and Africa. The company is part of the Mitsubishi Heavy Industries Group and is located in Almere, the Netherlands.

See our marine products for IMO Tier III



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