This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Catalytic NOX After-Treatment System for Heavy-Duty Trucks Using Diesel Fuel as Reducing Agent
Technical Paper
1999-01-3563
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
An advanced catalytic exhaust after-treatment system addresses the problem of NOX emissions from heavy-duty diesel trucks, relying on real-time catalyst modelling. The system consists of de-NOX catalysts, a device for injection of a reducing agent (diesel fuel) upstream the catalysts, and computer programmes to control the injection of the reducing agent and to model the engine and catalysts in real time. Experiments with 5 different air-assisted injectors were performed to determine the effect of injector design on the distribution of the injected diesel in the exhaust gas stream. A two-injector set-up was investigated to determine whether system efficiency could be increased without increasing the amount of catalyst or the amount of reducing agent necessary for the desired outcome. The results were verified by performing European standard transient cycle tests as well as stationary tests. It is shown that the injector design and the injector position strongly influence the distribution of diesel fuel spray in the exhaust gas system. The use of a second injector could not be shown to increase NOX conversion substantially during stationary or transient conditions although the potential seems to exist. The NOX conversion during a standard European transient cycle reached 39% at a fuel penalty of 5%. The outlet hydrocarbon and CO levels were decreased substantially and the formation of N2O was very low, with levels close to the detection limit of the instrument. The choice of injection strategy parameters is shown to have a large impact on system performance. The exhaust gas system described in this paper is ready for use onboard heavy-duty trucks; it provides a means of decreasing the amounts of NOX emitted from mobile diesel powered sources.
Recommended Content
Authors
Citation
Künkel, C., Odenbrand, C., and Westerberg, B., "A Catalytic NOX After-Treatment System for Heavy-Duty Trucks Using Diesel Fuel as Reducing Agent," SAE Technical Paper 1999-01-3563, 1999, https://doi.org/10.4271/1999-01-3563.Also In
References
- Howard C. S. Daniels F. J. Phys. Chem. 62 1958 360
- Penetrante B. M. Hsiao M. C. Merritt B. T. Vogtlin G. E. Soc. Automot. Eng., SAE Technical Papers 971715 1997
- Andersson S. L. Gabrielsson P. L. T. Odenbrand C. U. I. A. I. Ch. E. J. 40 1994 1911
- Ogasawara K. Muramatsu G. Makino S. JSAE Review 16 1995 61
- Rice G. W. Deeba M. Feeley J. S. Soc. Automot. Eng., SAE Technical Papers 962043 1996
- Katoh K. Kosaki Y. Watanabe T. Funabiki M, Soc. Automot. Eng., SAE Technical Papers 980931 1998
- Ciambelli P. Corbo P. Gambino M. Migliardini F. Stud. Surf. Sci. Catal. 116 1998 307
- Künkel C. Odenbrand C. U. I. Westerberg B. Andersson B. ICE 97 Internal Combustion Engines: Experiments and Modeling 585 1997 CNR - Istituto Motori Naples
- Peters A. Langer H.-J. Joki B. Müller W. Klein H. Ostgathe K. Soc. Automot. Eng., SAE Technical Papers 980191 1998
- Heimrich M. J. Soc. Automot. Eng., SAE Technical Papers 970755 1998
- Kawanami M. Okomura A. Horiuchi M. Schäfer-Sindlinger A. Zerafa K. Soc. Automot. Eng., SAE Technical Papers 961129 1996
- Brogan M. S. Brisley R. J. Walker A. P. Webster D. E. Boegner W. Fekete N. P. Krämer M. Krutzsch B. Voigtländer D. Soc. Automot. Eng., SAE Technical Papers 952490 1995
- Lörch H. Weisweiler W. Chem.-Ing. Tech. 70 6 1998 749
- Fridell E. Skoglundh M. Johansson S. Westerberg B. Törncrona A. Smedler G. Stud. Surf. Sci. Catal. 116 1998 537
- Westerberg B. Künkel C. Odenbrand C. U. I. Proc. 20th Task Leaders Meeting of the IEA Implementing Agreement “Energy Conservation and Emissions Reduction in Combustion” July 26-29 1998 Ottawa
- Westerberg B. Andersson B. Künkel C. Odenbrand C. U. I. Stud. Surf. Sci. Catal. 116 1998 317
- Litorell M. Allansson R. Andreasson A. Fredholm S. Hawker P. Johansson B. Lööf P. Smedler G. Soc. Automot. Eng., SAE Technical Papers 952489 1995
- Martin A. P. Will N. S. Bordet A. Cornet P. Gondoin C. Mouton X. Soc. Automot. Eng., SAE Technical Papers 980936 1998
- Kharas K. C. C. Miller M. J. Yan J.-I. Soc. Automot. Eng., SAE Technical Papers 982604 1998