Early availability for IMO II compliant MaK engine

21 Jul 2010
MaK M 20 C marine engine

MaK M 20 C marine engine

With the implementation of IMO II regulations for the marine industry on 1 January 2011, Caterpillar Motoren has been working for nearly three years on a strategy for each of its four medium-speed engine series.

Now, nearly six months before the enactment of the IMO regulations, Caterpillar is announcing the advance availability of the IMO II-compliant configuration of the MaK M 20 C medium speed engine. After months of focused work on the smallest MaK engine series, the M 20 C is available for purchase globally in both 6- and 8-cylinder configurations, both of which meet the IMO guidelines. Based on the configuration, the M 20 C engine will produce between 1,020-1,520kW at 900-1000 rpm and is capable of operating on HFO or MDO.

Manufactured at the Kiel Engine Center in Kiel, Germany, the M 20 C has been a very popular engine for a variety of tug and fishing applications around the world due it its high power output at a relatively small footprint. Since its initial manufacture in 1992, more than 1,200 M 20 C engines have been manufactured and sold through the global MaK dealer network.

To meet the additional regulations, which are aimed at reducing engine emissions, specifically NOx, MaK engineers were able to make minor modifications to the engine to achieve the desired emission levels. The focus of the design changes to the engine is the injector pump, depending on the application, which was redesigned with a new plunger for emission optimization in alignment with new timing for fuel injection, combustion inlet, and exhaust outlet. Additionally, the IMO II-compliant configuration utilizes redesigned gas piping to optimize the flow of exhaust gas. In the end, these engineering changes will ensure full compliancy without sacrificing efficiency or reliability for fixed pitch propeller, controllable pitch propeller or variable speed auxiliary and generator set configurations.

Along with new builds coming from the Kiel Engine Center, a retrofit kit is also available for existing 6- or 8-cylinder M 20 C customers who are looking to meet the IMO II regulatory requirements.

The other MaK medium-speed engine series are currently in the testing phase of the new production introduction (NPI) process and will be fully IMO II-complaint and available for sale world-wide on by the end of 2010.

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