This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Decrease in Activity of Diesel Hydrocarbon-Selective Catalytic Reduction on the Highway Fuel Economy Test
Technical Paper
2009-01-2778
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Transient exhaust emissions data were collected with a 4.9-L, V6 prototype diesel engine operated on an engine dynamometer using repetitive Highway Fuel Economy Tests (Hwy-FET). This procedure provided sufficient exhaust temperatures during transient operation to characterize the performance of an exhaust treatment system consisting of a diesel oxidation catalyst (DOC) followed by a hydrocarbon selective catalytic reduction (HC-SCR) system for NOx control under conditions typical of “real world”. The goal was to provide data needed for modeling the problem of hydrocarbon deactivation. Repetitive Hwy-FETs highlighted the effects of hydrocarbon deactivation over time. Stochastic Process Modeling showed that the observed catalyst deactivation was due mainly to a change in the reactivity of the catalyst and not to a change in the catalyst inlet conditions.
Recommended Content
Authors
Topic
Citation
Hilden, D. and Sloane, T., "Decrease in Activity of Diesel Hydrocarbon-Selective Catalytic Reduction on the Highway Fuel Economy Test," SAE Technical Paper 2009-01-2778, 2009, https://doi.org/10.4271/2009-01-2778.Also In
References
- http://www.dieselnet.com/standards/eu/ld.php#stds
- Cheng S. W. Mulawa P. A. Hydrocarbon Deactivation of a Hydrocarbon SCR Catalyst SAE paper
- Shimizu K. –I. Satsuma A. Selective catalytic reduction of NO over supported silver catalysts – practical and mechanistic aspects Physical Chemistry Chemical Physics 8 2677 2006
- Hilden D. L. Crellin C. C. Diesel Exhaust Aftertreatment Device Regeneration System U.S. Patent Application 20060016176
- Seabrook J. Salamon T. Edwards S. Noell I. A Comparison of Neural Networks, Stochastic Process Methods and Radial Basis Functions for the Optimization of Engine Control Parameters Haus der Teknik – 2nd Conference on Design of Experiments in Engine Development Berlin 2003