Workshop   "CO₂-Reduction despite exhaust aftertreatment?!"

Organized by the FAD (registered association) more than 50 representatives of science, research, industry and politics met on 26 September 2007 in the Paul-Löbe-Haus in Berlin. They discussed the technical challenges of the CO₂-reduction as well as possible solutions from the sight of the engine and vehicle developer.


Aim of the workshop was to spread information and to put facts into the discussion. The topic of climate change, stringency of resources and the health hazardous potential of the emissions on one hand and innovation, economic growth as well as guaranteed mobility on the other hand require a comprehensive view of the carbon dioxide and pollutant emissions caused by diesel engines.

After the opening and the welcoming by the deputy chairman of the transport committee of the German Bundestag, Mr. Hettlich, Prof. Zikoridse gave the participants a first insight into the subject of the workshop.

Followed by “Measures for the NO_x-aftertreatment and its correlation with carbon dioxide” by Dr. Pott, Volkswagen AG. He spoke about carbon dioxide emissions relating to the kind of exhaust aftertreatment.

With the presentation “Impact of the exhaust aftertreatment on the fuel consumption of diesel engines” Mr. Körfer, FEV Motorentechnik GmbH showed that an effective exhaust aftertreatment is always combined with an increase in fuel consumption.

Dr. Hehle, MTU Friedrichshafen GmbH, argued in his contribution “CO₂-reduction potential of future emission-optimized off-Highway engines” that the exhaust aftertreatment for huge engines is still not state of the art for off-highway application. Nevertheless the exhaust aftertreatment is inevitable in this sector as emission limit values will be also implemented for these applications.

After the lunch break Prof. Becker, TU Dresden, spoke about “How much CO₂ and exhaust aftertreatment to which extend and when?” His reflection of the problem from the view of the ecological transport gave the message: “Efficiency is the speciality of our industry. The German vehicle industry can and has to take a cutting-edge position in regards to environmental protection”.

Mr. Emmerling, MAN Nutzfahrzeuge AG, acceded to this statement. In his presentation “The trade-off NO_x-CO₂ from the view of the commercial vehicle industry” he explained that a combination of different technologies will offer a solution for this conflict.

The subsequent discussion underlined the possibility of a simultaneous reduction of exhaust emission and CO₂ emission. But this is connected by high use of technology and significantly increasing costs.

At the end of the meeting Prof. Zikoridse summarized: “The engine developer do have the innovative potential to combine environmental protection with a reduction of pollutants.”

All presentations can be requested at the FAD-office.

 Programme_CO2-Workshop