This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Temperature Based Model Approach to Optimize SCR Calibration for BSIV Norms
Technical Paper
2016-01-1733
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
An efficient after treatment technique is driven by the need to maintain strict emission norms for heavy-duty and medium-duty ground vehicles. SCR being an advanced active emission technology system for diesel engine, is one of the most cost-effective and fuel-efficient technologies available for complying with the stringent NOx emission legislations. The design of the SCR system involves catalyst selection, complex controller development like urea dosing strategy and the interaction between engine setup and after treatment system. For this purpose, the SCR model must be computationally efficient to evaluate the complete efficiency along with to take care for the NH3 slip also. The SCR model was prepared with respect to SCR inlet temperature and ratio of NOx and ammonia to study the behavior of NOx conversion efficiency keeping consideration of NH3 slip also required for optimizing the calibration. An investigation was done into the urea utilization and NOx slip over an SCR catalyst was completed for the purposes of determining the proper calibration for NOx reduction over a downstream SCR. Experiments were conducted in an engine dynamometer on the 5.64 lts. diesel engine and optimization was done to get the optimum NOx conversion efficiency with the temperature based model.
Authors
Topic
Citation
Barman, J., Arora, S., Khan, R., and Parashar, M., "Temperature Based Model Approach to Optimize SCR Calibration for BSIV Norms," SAE Technical Paper 2016-01-1733, 2016, https://doi.org/10.4271/2016-01-1733.Also In
References
- Scott Sluder , C. , Storey , J. , Lewis , S. , and Lewis , L. Low Temperature Urea Decomposition and SCR Performance SAE Technical Paper 2005-01-1858 2005 10.4271/2005-01-1858
- Heywood , J. B. Internal Combustion Engine McGraw-Hill Publishing Company New York 1988
- www.wikipedia.com
- Diesel net Emission Standards and SCR system
- Suzuki , H. and Ishii , H. Emission Characteristics of a Urea SCR System under Catalysts Activated and De-Activated Conditions SAE Technical Paper 2006-01-0639 2006 10.4271/2006-01-0639
- Johnson , T. Diesel Emission Control in Review SAE Int. J. Fuels Lubr. 1 1 68 81 2009 10.4271/2008-01-0069
- Kim , J. , Cavataio , G. , Patterson , J. , Laing , P. et al. Laboratory Studies and Mathematical Modeling of Urea SCR Catalyst Performance SAE Technical Paper 2007-01-1573 2007 10.4271/2007-01-1573
- Model Based Optimization of a Complete Diesel Engine/SCR System Ph.D. thesis Lund University Lund, Sweden Ericson , C. 2009
- Modeling and identification of linear parameter varying systems Springer Tóth , R. 2010
- Stefan 2007 Numerical heat transfer and thermal engineering of AdBlue (SCR) tanks for combustion engine emission reduction Applied Thermal Engineering 27 1790
- Girard , J. , Snow , R. , Cavataio , G. , and Lambert , C. The Influence of Ammonia to NOX Ratio on SCR Performance SAE Technical Paper 2007-01-1581 2007 10.4271/2007-01-1581
- Koebel M. , Elsener M. , and Madia G. 2001 Reaction pathways in the selective catalytic reduction process with NO and NO2 at low temperatures Ind. Eng. Chem. Res. 40 2001 52
- Saito , S. , Shinozaki , R. , Suzuki , A. , Jyoutaki , H. et al. Development of Urea-SCR System for Commercial Vehicle - Basic Characteristics and Improvement of NOx Conversion at Low Load Operation - SAE Technical Paper 2003-01-3248 2003 10.4271/2003-01-3248