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A Novel Approach to Studying the Effect of Various Rapid Aging Cycles on the Performance of a High Tech Palladium Only Three Way Catalyst
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Abstract
A new technique has been developed to assess the deterioration of hydrocarbon lightoff during FTP Phase 1. This method maps the dynamic real time data onto the hydrocarbon conversion/gas phase temperature plane to show the instantaneous hydrocarbon activity as a function of the exhaust temperature. Clearly, the map exhibits an apparent hysteresis bifurcation. The bifurcation is thought to be predominantly related to catalyst surface temperature. The hysteresis envelope of the map expands with aging severity. Therefore, the map can be used as a measure of catalyst deactivation.
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Citation
Kumar, S., Hochmuth, J., and Heck, R., "A Novel Approach to Studying the Effect of Various Rapid Aging Cycles on the Performance of a High Tech Palladium Only Three Way Catalyst," SAE Technical Paper 941997, 1994, https://doi.org/10.4271/941997.Also In
References
- Wallman W. Engh G.T. “Development of the Volvo Lambda-Sond System” SAE 770295 1977
- Falk C.D. Mooney JJ. “Three-Way Conversion Catalysts: Effect of Closed-Loop Feed-Back Control and Other Parameters on Catalyst Efficiency” SAE 800462 1980
- Adomaitis J.R. Heck R.M. “Vehicle Control Strategies Effect on Catalyst Performance” SAE 881597 1988
- Heck R.M. Patel K.S. Adomaitis J.R. “Platinum versus Palladium Three-Way Catalysts - Effect of Closed-Loop Feed-Back Parameters on Catalyst Efficiency” SAE 892094 1989
- Socha, L.S. Jr. Thompson, D.F. Jr. “Electrically Heated Extruded Metal Converters for Low Emission Vehicles” SAE 920093 1992
- Heimrich MJ. Smith L.R. Kitowski J. “Cold-Start Hydrocarbon Collection for Advanced Exhaust Emission Control” SAE 920847 1992
- Ball D.J. “Distribution of Warm Up and Underfloor Catalyst Volumes” SAE 922338 1992
- Hochmuth J.K. Burk P.L. Tolentino C. Mignano M.J. “Hydrocarbon Traps for Controlling Cold Start Emissions” SAE 930739 1993
- Hochmuth J.K. Mooney JJ. “Catalytic Control of Emissions from M-85 Fueled Vehicles” SAE 930219 1993
- Rizwan-Uddin Dorning J.J. “The Nonlinear Dynamics of Two Phase Flow in a Simple Heated Loop,” Chem. Eng. Comm. 87 1 1990
- Kisenyi J. Pallin N. Tooby C. Hurley R.G. Atherton P. Webb D. “The Effect of ‘Spark Retard’ as a Method of Raising Exhaust Gas Temperature for Automotive Catalyst Dyno Aging” Proceedings of the Third International Congress on Catalysis and Automotive Pollution Control 1994
- Heck R.M. Hochmuth J.K. Dettling J.C. “Effect of Oxygen Concentration on Aging of TWC Catalysts” SAE 920098 1992
- Dettling J. Hu Z. Lui Y.K. Smaling R.M. Wan C.Z. Punke A. “Smart Pd Technology to Meet Stringent Standards” Proceedings of the Third International Congress on Catalysis and Automotive Pollution Control 1994