STT Emtec and AS Nymo launch marine NOx reduction by EGR to the Norwegian market


Marine DNOx will allow vessel owners to reduce NOx emissions considerably, resulting in substantial environmental benefits.

STT Emtec AB and AS Nymo have today announced the launch of Marine DNOx, a new exhaust gas recirculation (EGR) NOx reduction system developed specifically for small- and medium-sized vessels in the maritime and offshore sector. STT Emtec is a leading technology provider of emission reduction equipment, including EGR systems for automotive applications. AS Nymo owns two fully capable yards in Grimstad and Eydehavn and provides a wide range of services to the offshore and shipping industries.

Under a recently signed agreement between the two companies, STT Emtec will develop and manufacture Marine DNOx in its production facility in Sweden, while Nymo will be responsible for distribution, installation and marketing of Marine DNOx throughout Norway to the maritime and offshore communities.

Anders Bjork, CEO of STT Emtec, stated: "STT Emtec has a successful history of providing NOx reduction systems to the automotive industry around the world. The launch of the Marine DNOx is a direct result of our knowledge of NOx reduction technologies in the automotive sector, but has been tailored to the specific needs of trawler, ships and offshore vessels. Marine DNOx is the culmination of several years of research and development work and will provide vessel owners with a cost-effective solution to the challenge of NOx reduction."

Following the establishment of the NOx Fund in Norway in 2007, there is an increasing demand for NOx reduction from stationary and marine sources. Marine DNOx will allow vessel owners to significantly reduce their NOx emissions, improving their environmental performance and, in turn, resulting in lower NOx tax payments.

EGR is a well-known and cost-effective method for reducing NOx from automotive diesel engines. By recirculating a part of the exhaust gas back to into the air inlet, NOx emissions can be reduced up to 50 per cent. Together, STT Emtec and Nymo have taken this EGR technology one step further and are now introducing EGR for marine applications.
The Marine EGR system will be a cost-effective alternative to existing technologies, such as SCR and engine upgrades, especially in retrofit applications where limited space in engine rooms can be a considerable challenge.

Subject to certain technical criteria, Marine DNOx will be available for fitting in any location in Norway chosen by the vessel owner. Nymo will be responsible for all installation activities, including liaison with the ship owner on timeframes for the project.

Rolf Urfjell, managing director, AS Nymo, said: "As a leading supplier of services to vessel owners - from service and repair to product installations and retrofits- we are now seeing increasing demand for NOx technologies that are both simple to install and cost-effective. Marine DNOx ideally meets these requirements. We are delighted that our partnership with STT Emtec will allow us to offer this robust and proven NOx reduction technology, bringing significant benefits to vessel owners throughout Norway."

Technical development and field trials are ongoing and the system will be launched for production to the Norwegian market at the beginning of 2009.


For further information, please contact:


Nils Myers at STT Emtec AB
Tel: + 46 709 689 799



Tommy Jakobsen at AS Nymo
Tel: +47 9097 1350


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Visiting address: Njurundavägen 16, 862 40 Njurunda, Sweden. STT Emtec, engine and emission technology.