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Diesel Oxidation Catalysts with Low Sulfate Formation for HD-Diesel Engine Application
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 01, 1993 by SAE International in United States
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Stringent standards for the emission of particulate matter by heavy duty diesel engines will come into effect in the nineties in the US and are anticipated to come into effect in the same period in W-Europe and in Japan. This has lead most of the manufacturers to intensify the evaluation of exhaust aftertreatment devices.
Although particulate filtering systems proved to be valuable in limited fleet applications, the general introduction did not take place because of complicated and limited durability regeneration. Flow-through catalysts which were introduced for passenger cars in 1989 drew a lot of attention for potential heavy duty diesel applications.
In this paper the major parameters affecting the performance of these flow-through catalysts and the particularities related to heavy duty diesel application are outlined. The parameters deal with the fuel sulfur content, the test cycles applied, the catalyst formulation and washcoat composition. Much attention is paid to the durability of the diesel catalysts, since they have to match the long service life of the diesel engines. The deactivation processes which occur and their impact on the catalyst efficiency are explained. The evaluation which was conducted on both model gases and engine test benches with different engine types shows sulfate formation depends on the various oxides tested for washcoat preparation and overall efficiency which can be optimized by choosing appropriate platinum group metals.
Furthermore it was demonstrated that with a precious metal based diesel catalyst attached to a 12 1 DI/TCI prototype engine, US-heavy duty diesel emission regulations for MY 1994 were met.
CitationEngler, B., Lox, E., Ostgathe, K., Cartellieri, W. et al., "Diesel Oxidation Catalysts with Low Sulfate Formation for HD-Diesel Engine Application," SAE Technical Paper 932499, 1993, https://doi.org/10.4271/932499.
- US-Federal Register March 15 1985 December 16 1987 US Clean Air Act October 1990
- Festy, B. Proceedings International Seminar “Diesel Engines: Prospects 1990 - 2000” Lyon, France 1990
- Klingenberg, H. Winneke H. Studies on health effects of automotive emissions - How dangerous are diesel emissions? The Science of the Total Environment 93 95 105 1990
- Engler, B. Koberstein, E. Lox, E. Ostgathe, K. Völker, H. Diesel emission control with newly developed catalysts Proceedings Autotech 89 Birmingham IMChE 1989
- Anisits, F. Reibold, G. 6 759 766 1989
- Horiuchi, M. Saito, K. Ichihara, S. The effects of flow-through type oxidation catalysts on the particulate reduction of 1990's diesel engines SAE Technical Paper Series 900600 1990
- Committee of Common Market Automobile Constructors (CCMC) Brussels September 19 1990
- Zelenka, P. Ostgathe, K. Lox, E. Reduction of diesel engine emissions by using oxidation catalysts SAE Technical Paper Series 902111 1990
- Zelenka, P. Kriegler, W. Herzog, P. L. Cartellieri, W. Ways towards the clean heavy duty diesel engine SAE Technical Paper Series 900602 1990
- Cartellieri, W. Ruhri, F. Tritthart, P. October 1989
- Held, W. April 11 1991
- Russel, T. J. Fiat, R. Diesel Fuel Quality, Proceedings International Seminar “Diesel Engines: Prospects 1990-2000” Lyon, France 1990
- Wall, J. C. Hoekman, S.K. Fuel Composition Effects on Heavy Duty Diesel Particulate Emissions SAE Technical Paper Series 841364 1984