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Possible Exhaust Gas Aftertreatment Concepts for Passenger Car Diesel Engines with Sulphur-free Fuel
Technical Paper
1999-01-1328
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In order to fulfill future emissions standards, there is a need for new exhaust-gas aftertreatment concepts, with NOx-emissions reduction in passenger car diesel engines being of particular importance. The NOx storage catalyst is one of the technologies currently under discussion with high NOx conversion potential, and which is under development at DaimlerChrysler for EURO IV standards. With this system, the nitrogen oxides contained in the diesel exhaust gas are stored under lean exhaust-gas conditions and are reduced in the catalyst through an enriched air-fuel ratio of the exhaust-gas and favorable thermal conditions. Hydrocarbons, carbon monoxide and hydrogen are used as reducing agents.
DaimlerChrysler has analyzed the effect of sulphur contained in the fuel on the operation of various catalysts during laboratory and engine testing. The sulphur dioxide in the exhaust gas generates sulfates, which remain on the catalyst when nitrate compounds are regenerated briefly. For this reason, NOx conversion efficiency deteriorates rapidly. Using the diesel fuel currently available in Europe with a sulphur content of 370 ppm (limit: 500 ppm), the efficiency of the catalyst is significantly reduced within a few operating hours.
However, using diesel fuel with a sulphur content of 10 ppm in a C220 CDI fitted with a NOx storage catalyst, a potential for NOx reduction in the New European Driving Cycle (NEDC) of over 50% could be achieved in repeated testing.
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Krämer, M., Abthoff, J., Duvinage, F., Ruzicka, N. et al., "Possible Exhaust Gas Aftertreatment Concepts for Passenger Car Diesel Engines with Sulphur-free Fuel," SAE Technical Paper 1999-01-1328, 1999, https://doi.org/10.4271/1999-01-1328.Also In
References
- Hardenberg H.
- Gairing M. Lange W. Jeune A. L. Naber D. Reglitzky A. Schäfer A. 1994 1
- Mollenbauer K. Mooser D. Israel G. W. Klingenberg H. 1995 10
- ACEA - Association des Constructeurs Européens d'Automobiles ACEA Position on Fuel Sulphur 21 05 1997 The ACEA Fuel Charter Sept. Nov. 1996
- ACEA - Association des Constructeurs Européens d'Automobiles ACEA Position on Fuel Sulphur 21 05 1997 The ACEA Fuel Charter Sept. Nov. 1996
- 1996
- 1996
- Boegner W. Krämer M. Krutzsch B. Pischinger S. Voigtländer D. Wenninger G. Wirbeleit F. Brogan M.S. Brisley R.J. Webster D.E. Removal of nitrogen oxides from the exhaust of a lean-tune gasoline engine Applied Catalysis B: Environmental 7 1995 153 171
- Brogan M.S. Brisley R.J. Walker A.P. Webster D.E. Boegner W. Fekete N.P. Krämer M. Krutzsch B. Voigtländer D. Evaluation of NOx Storage Catalysts as an Effective System for NOx Removal from the Exhaust of Leanburn Gasoline Engines SAE 952490 SAE International Fuels & Lubricants Meeting & Exposition Toronto, Ontario October 16-19 1995
- Fekete N.P. Kemmler R. Voigtländer D. Krutzsch B. Zimmer E. Wenninger G. Strehlau A.W. van den Tillart J.A.A. Leyrer J. Lox E.S. Müller W. Evaluation of NOx-Storage Catalysts for Lean Burn Gasoline Fueled Passenger Cars SAE 970746 SAE International Congress & Exposition Detroit, Michigan February 24-27 1997
- Fekete N.P. Gruden I. Voigtländer D. Nester N. Krutzsch B. Willand J. Kühn M. Advanced Engine Control and Exhaust Gas Aftertreatment of a Leanburn SI Engine SAE 972873 SAE International Fall Fuels & Lubricants Meeting Tulsa, Oklahoma October 13-16 1997
- 1996
- 1996
- 1997