Stage V certification for marine engines

Joining forces to get Stage V certification for marine engines

The Koedood Marine Group has fully completed the IWW EU Stage V certification for the Mitsubishi SR engine family for inland shipping. Also, the Mitsubishi S12A2 engine is IWW EU Stage V certified. The engines are equipped with the also certified 'Koedood Engine Emission System', which removes nitrogen and particulate matter from the exhaust gases of the engines..

The chain that suits you

The IWW Stage V certification of the engines, initiated two years ago, turned out to be a comprehensive and complex process. ‘The European directive for the Stage V test procedure did not always tie in well with the specific situation in inland navigation', says Peter Snijders on behalf of Koedood. ‘Fortunately, we were able to discuss this with the Dutch Road Transport Directorate (RDW), which the government had designated as the certifying body. We got to know RDW as a very decisive partner. For RDW, the legislation was always leading, but they also had an eye for the practical application of it in inland shipping. Careful interpretation of the legislation was required in order to achieve customisation. And I think that together we have managed to go through that process wonderfully. In mid-October, we received the green light from RDW. We had thus successfully and satisfactorily completed the entire procedure.’

Legislation

The Stage V certificate for the Mitsubishi SR (470 to 1250 kW) and the Mitsubishi S12A2 engines is in the name of Koedood. For both engine types, Koedood is thereby recognized and desig-

nated as the manufacturer. In addition, we adjust the timing of the engines so that they run 5% more economically than the CCR 2 variant. Koedood does this with Mitsubishi's permission and retaining the manufacturer's warranty. Mitsubishi also fully supports us as the manufacturer of the Stage V certified engines. Koedood is Mitsubishi's partner for the supply of Stage V engines throughout Europe, as long as this legislation is in force.

TNO Helmond also played an important role in the certification. A Mitsubishi S6R engine with the emission system put in over 2500 hours of operation on a TNO test bench. The endurance test was an essential part of the certification procedure and proved that the system is robust and durable. The S12A2 was then tested on the same test stand with the same emissions system. As the emission system had already passed the endurance test, a considerably shorter test procedure was sufficient for the S12A2.

Emission system

The certified emission system is suitable for the load profiles of inland navigation, where engines are often subjected to long periods of low load, which can adversely affect the functioning of an emission system. Therefore, the Koedood team has chosen an extra component. The exhaust gases first flow through a Diesel Oxidation Catalyst (DOC). There, the soot particles oxidise, which generates extra heat. At low loads, such as on canals, the exhaust temperature remains high enough for optimal operation of the SCR catalyst and the particulate filter (DPF). As a result, a burner is optional, reducing maintenance and running costs.

The successful certification is a team effort of Koedood, RDW, Mitsubishi

'Collaboration is key'

and TNO. There are still a few dots to put on the ‘i’, but the ‘i’ stands. The Stage V certified engines have been introduced to the market under the brand name ‘KEES’ (Koedood Engine Emission Systems). The first two ships are already sailing with it and the sales team has already sold about 50 of these engines.

Hans Heynen

Contact Koedood Marine Group

E info@koedood.nl I www.koedood.nl

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The 6-cylinder S6R-MPTK/MPTAW engine has clocked up more than 2,500 hours on the test stand at TNO’s Powertrain Test Centre. With this EU Stage V certification of the engine and the emission system, the up to 16 cylinder engine family (470 to 1250 kW) is fully certified.