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Scania EGR technology nominated for prestigious award

Lars Tegnelius, Scania, has been nominated for The Swedish Technology Award for his innovative approach to lowering both nitrogen oxide (NOx) and particulate (PM) emissions from Scania's diesel engines. The technology involves reducing emissions by improving the combustion process, without using any additives or aftertreatment of the exhaust gases.

”We feel very proud that Lars Tegnelius and Scania’s EGR engines are candidates for The Swedish Technology Award,” says Urban Johansson, responsible for Powertrain Development at Scania. ”This is Scania's way of achieving Euro 4 without any exhaust aftertreatment and without any additional efforts from our customers. Tests show that with the aid of this technology and a novel injection system, Scania will be able to achieve Euro 5 as well within a few years.

Lars Tegnelius is responsible for ’Performance and emissions’ within Scania's engine development. Under his leadership, for example, Scania's inline engines have been optimised to comply with the Euro 4 emission standard without exhaust aftertreatment. Systems like Scania HPI and Scania EGR, both developed in-house, have been employed for the optimisation:

Scania HPI (high pressure injection) is a fuel injection system that is capable of handling very high injection pressures. The use of extra high injection pressures gave considerably lower particulate emissions than legally required for Euro 4. This provided a margin that could be used to reduce emissions of nitrogen oxides.

Scania HPI was developed in co-operation with US engine manufacturer Cummins during the 1990s. The system is produced by Scania and Cummins in a jointly-owned facility in the US. Lars Tegnelius took part in this development work.

Scania EGR (exhaust gas recirculation) uses part of the engine’s exhaust gases, which are cooled and then fed back into the engine’s intake system. The cooled exhaust gases lower the combustion temperature and thus emissions of nitrogen oxides.

The Swedish Technology Award, instigated in 2005, will be presented every second year by Swedish technology weekly Ny Teknik and Vinnova (The Swedish Agency for Innovation Systems). The candidates are nominated by a jury consisting of prominent persons from industry and research. The award, a scholarship worth SEK 300,000 (approx. EUR 33,000), will presented by the Swedish Crown Princess, HRH Victoria, at a ceremony at The Royal Swedish Academy of Engineering Sciences, IVA, on 15 February.

One of the basic requirements for technical solutions to be nominated is that they have resulted in completely developed products that influence the profitability of companies and contribute to a sustainable economic development.

After an extensive survey and expert scrutiny, four contributions have been nominated as candidates for the 2005 award:

Lars Tegnelius, Scania. Leading the work on a diesel engine meeting stringent environmental requirements without aftertreatment to reduce nitrogen oxides and particulate matter.

Karl Gustaf Derman, self-employed serial innovator. Jointly with several major Swedish companies he has developed a range of products with a global reputation.

Lars Harder and Thomas Lundholm, B4Industry, have developed a software that measures industrial processes in real-time – a tool to improve quality in the workshop.

Carl-Ejnar Sölver, ABB Power Technologies, representing a large team that has developed a separating switch for transformers. The device saves money and reduces the risk of power failure.

The Chairman of the jury is Hans Strandberg, Editor-in-chief of Ny Teknik. The other jury members are: Ingela Agrell, Stiftelsen för strategisk forskning (Swedish Foundation for Strategic Research). Staffan Helgesson, Creandum risk capitalists. Gunilla Jönson, headmaster of the Lund Insititute of Technology. Margareta Norell Bergendahl, professor of integrated product development, prorector of the Royal Institute of Technology. Claes Wilhelmsson, ex-director of research at Astra. Roland Andersson, professor of innovation technology at the Märlardalen University.

For further information, please contact Hans-Åke Danielsson, Press Manager,

Tel. +46 8055385662, email

Scania is one of the world's leading manufacturers of trucks and buses for heavy transport applications, and of industrial and marine engines. With 29,100 employees and production facilities in Europe and Latin America, Scania is one of the most profitable companies in its sector. In 2003, sales totalled SEK 50.5 billion and income after financial items was SEK 4.6 billion. Scania products are marketed in about 100 countries worldwide and some 95 percent of Scania’s vehicles are sold outside Sweden.

[N05005EN] Per-Erik Nordström