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High Temperature Aging Cycle for European Catalyst Applications
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English
Abstract
A reliable engine aging method is required to screen full size catalysts for high temperature applications typical of European autobahn wide open throttle driving. Exhaust emission control catalysts will be exposed to temperatures exceeding 850C under these conditions. This paper describes one method of using an engine to rapidly age catalysts under conditions which nearly duplicate wide open throttle exhaust gas composition and temperature. The method uses a V-8 engine as a gas generator, combines and thoroughly mixes the exhaust from both banks, then divides the mixed exhaust into two equal streams, reintroduces air/fuel perturbations, and passes each equal perturbated flow through a catalyst. This V-8 engine aging method of dual converters produces an exhaust stream of equal flow and composition across both catalysts and overcomes the concerns of other comparative aging techniques.
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Authors
- J. J. Mooney - Engelhard Corp., Specialty Chemicals Div., AutoExhaust Catalyst Group, Menlo Park, NJ
- W. M. Rudy - Engelhard Corp., Specialty Chemicals Div., AutoExhaust Catalyst Group, Menlo Park, NJ
- L. A. Lautman - Engelhard Corp., Specialty Chemicals Div., AutoExhaust Catalyst Group, Menlo Park, NJ
- H. S. Hwang - Engelhard Corp., Specialty Chemicals Div., AutoExhaust Catalyst Group, Menlo Park, NJ
Citation
Mooney, J., Rudy, W., Lautman, L., and Hwang, H., "High Temperature Aging Cycle for European Catalyst Applications," SAE Technical Paper 852098, 1985, https://doi.org/10.4271/852098.Also In
References
- Falk C. D. Mooney J. J. “Three-Way Conversion Catalysts: Effect of Closed Loop Feed-Back Control and Other Parameters on Catalyst Efficiency,” SAE Paper 800462 1980
- Heyde M. E. Adawi M. K. Anderson D. H. Schroeder M. P. Delosh R. G. “Dynamometer Test Procedures for Three-Way Catalyst Screening,” SAE Paper No. 770371 1977
- Private communication Oeser Polat Volkswagen West Germany 1984
- Private communication Deakin Alan Ford Motor Company Dunton, England July 1984