This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Emission Characteristics of a Urea SCR System under Catalysts Activated and De-Activated Conditions
Technical Paper
2006-01-0639
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Urea SCR (Selective Catalytic Reduction) system has high potential of reducing NOx. But such as system durability and safety under deteriorated catalysts conditions have not been well enough clarified because it is new technology for vehicles. In this paper, current NOx emission level of an engine equipped with urea SCR system is discussed and then exhaust emission characteristics were analyzed when the SCR catalyst and/or oxidation catalyst lose their functions. When both SCR and oxidation catalyst were de-activated, not only NOx but also PM increased remarkably, which were much more than the engine-out emissions. Oxidation catalyst downstream of SCR catalyst was effective to suppress such deteriorations.
Recommended Content
Authors
Citation
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, https://doi.org/10.4271/2006-01-0639.Also In
References
- Helden R. M. et al. Engine Dynamometer and Vehicle Performance of a Urea SCR-System for Heavy-Duty Truck Engines SAE Paper 2002-01-0286
- Saito S. et al. Development of Urea-SCR System for Commercial Vehicle-Basic Characteristics and Improvement of NOx Conversion At Low Load Operation SAE Paper 2003-01-3248
- Seher D. et al. Control Strategy for NOx - Emission Reduction With SCR SAE Paper 2003-01-3362
- Walker P. G. et al. The Development and In-Field Demonstration of Highly Durable Scr Catalyst Syst SAE Paper 2004-01-1289
- Lambert C. et al. Technical Advantages of Urea Scr for Light-Duty and Heavy-Duty Diesel Vehicle Applications SAE Paper 2004-01-1292
- Hori M. Oguchi M. Feasibility Study of Urea SCR Systems on Heavy Duty Commercial Vehicles SAE Paper 2004-01-1944
- Sato S. et al. The Study of NOx reduction using Urea-SCR system for a heavy-duty diesel engine (in Japanese with English summary) Proceedings of Spring Convention of JSAE No.29-04 13 16 2004
- Suzuki H.. et al. Evaluation of Ammonia Continuous Measurement Techniques for Automobile Exhaust Gas (in Japanese with English summary) Proceedings of Spring Convention of JSAE, No.34-04 13 16 2004