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Modeling the Transient Characteristics of a Three-Way Catalyst
Technical Paper
1999-01-0460
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The dynamic behavior of three-way catalysts has significant impact on tailpipe emissions levels, but remains one of the last unknowns in the overall vehicle emissions model. A simple empirical model (appropriate for use in real-time engine control and on-board diagnostic strategies) has therefore been identified using fast response input / output measurements of the actual process. The model is able to characterize the (significant) dynamic behavior which has recently been observed under rich conditions, as well as the more well known dynamics which arise from oxygen storage. The results therefore compare well with measured responses over a wide range of air / fuel ratio conditions.
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Authors
Citation
Peyton Jones, J., Roberts, J., Pan, J., and Jackson, R., "Modeling the Transient Characteristics of a Three-Way Catalyst," SAE Technical Paper 1999-01-0460, 1999, https://doi.org/10.4271/1999-01-0460.Also In
Gas Direct Injection Aftertreatment and Exhaust Aftertreatment Modeling
Number: SP-1455; Published: 1999-03-01
Number: SP-1455; Published: 1999-03-01
References
- Beaumont A.J. Beauchamp S.W. Noble A.D. Air Fuel Ratio Control Technology For Ultra Low Emissions Vehicles ISATA 1993
- Beaumont A.J. Frith A.M. Adaptive Control Of Transient Air-Fuel Ratio Using Neural Networks ISATA 1994
- Vonkeman K.A. Jonkers G. van Santen R.A. Studies to the Functioning of Automotive Exhaust Catalysts Using In-Situ Positron Emission Tomography SAE paper 910843 1991
- Aimard F. Sorine M. Mathematical Modeling of Automotive 3-way Catalystic Converters with Oxygen Storage Capacity Control Engineering Practice 4 8 1119 1124 1996
- Germann H.J. Onder C.H. Geering H.P. Fast Gas Concentration Measurements for Model Validation of Catalytic Converters SAE paper 950477 1995
- Brandt E.P. Wang Y. Grizzle J.W. A Simplified 3-way Catalyst Model for Use in On-Board SI Engine Control and Diagnostics ASME International Congress and Exposition Sixth ASME Symposium on Advanced Automotive Technologies 1997
- Jackson R.A. Peyton Jones J.C. Pan J. Roberts J.B. Chemical Aspects of the Dynamic Performance of a Three-Way Catalyst SAE paper 99???? 1999
- Germann H.J. Taglaiferri S Geering H.P. Differences in Pre- and Post Converter Lambda Sensor Characteristics SAE paper 960335
- Peyton Jones J.C. Atherton D.P. Root Locus Diagrams, and the Effect of Zeros on System Response Int. J. Electrical Engineering Education 34 1 46 67 1997