This content is not included in your SAE MOBILUS subscription, or you are not logged in.
3-D Numerical Study of Effect of Injection Parameters Upon the Uniformity of Ammonia in Urea-SCR
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 27, 2013 by SAE International in United States
Annotation ability available
Event: 8th SAEINDIA International Mobility Conference & Exposition and Commercial Vehicle Engineering Congress 2013 (SIMCOMVEC)
Nowadays, due to the stringent engine emission norms, an efficient technique is required to reduce oxides of nitrogen (NOx) from automobiles especially from the lean burn engines. Selective Catalytic Reduction (SCR) is found to be an efficient after treatment method used to reduce oxides of nitrogen (NOx) from the exhaust. However, for light duty vehicles, because of the limited size of the catalysts, ammonia slip nullifies its advantages. Lack of uniformity of ammonia at the SCR monolith entrance causes ammonia slip. This study addresses the effect of injection parameters, location of injector and shape of injector upon the flow parameters, exhaust gas temperature and flow rate. The results obtained from this study provide useful guidelines for optimizing the injection parameters to avoid the ammonia slip. The evaporation of Urea Water Solution (UWS) is also investigated.
CitationRajan, V., Mallikarjuna, J., and Venkitachalam, G., "3-D Numerical Study of Effect of Injection Parameters Upon the Uniformity of Ammonia in Urea-SCR," SAE Technical Paper 2013-01-2768, 2013, https://doi.org/10.4271/2013-01-2768.
- Birkhold Felix , Meingast Ulrich , Wassermann Peter , and Deutschmann Olaf Modeling and simulation of the injection of urea-water-solution for automotive SCR DeNOx-systems Sciencedirect Applied Catalysis B: Environmental 70 2007
- Kim H-S , Min K , Myung C-L and Park S A combined experimental and computational approach to improve catalyst flow uniformity and light-off behaviour Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 2002
- Koebel M. , Elsener M. , Kleemann M. Urea-SCR: A promising technique to reduce NOx emissions from automotive diesel engines Elsevier Catalysis Today 59 2000
- Koebel M. , Elsener M. , Marti T. NOx - reduction in diesel exhaust gas with urea and selective catalytic reduction Combust. Sci. Tech. 121 1996
- Musa SNA , Saito M , Furuhata T , Arai M Evaporation characteristics of a single aqueous urea solution droplets ICLASS 2006 Kyoto, Japan 2006
- Kontin S. , Hofler A. , Koch R. and Bauer H. -J. Heat and mass transfer accompanied by crystallisation of single particle containing urea water solution ILASS - Europe 2010, 23rd annual conference on liquid atomization and spray systems
- Jeong , S. , Lee , S. , Kim , W. , and Lee , C. Simulation on the Optimum Shape and Location of Urea Injector for Urea-SCR System of Heavy-duty Diesel Engine to Prevent NH3 Slip SAE Technical Paper 2005-01-3886 2005 10.4271/2005-01-3886
- Vikas R , Mallikarjuna J M and Gnanesan V 3-D Numerical study of effect of flow parameters upon the Uniformity of NH 3 in Urea-SCR Advanced Materials research 505 2012 175 179 2012
- Weltens , H. , Bressler , H. , Terres , F. , Neumaier , H. et al. Optimisation of Catalytic Converter Gas Flow Distribution by CFD Prediction SAE Technical Paper 930780 1993 10.4271/930780