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Structural Analysis of Catalytic Converters in Automotive Exhaust Systems
Technical Paper
2002-01-0062
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper discusses many aspects of the structural analysis of catalytic converters on automotive exhaust systems. The analysis covers a canning process, where a substrate is wrapped with a mat material and canned with a steel shell; and a heating process, where high temperature exhaust gas passes through the substrate. In designing a catalytic converter, the maximum pressure on the substrate should not exceed the minimum isostatic strength of a chosen cell geometry of that substrate. At the same time, sufficient pressure is required to maintain a minimum retention force to hold the substrate in place. Also, lack of compression in the mat material, where the mat is in contact with exhaust gas, will cause mat erosion. Therefore, a careful investigation is needed to have the right amount of pressure on the substrate, both during canning and operation conditions, and at room and elevated temperatures. With the trend to use more thin wall substrates for better emission control, there is more need for this type of analysis.
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Citation
Chen, Y., "Structural Analysis of Catalytic Converters in Automotive Exhaust Systems," SAE Technical Paper 2002-01-0062, 2002, https://doi.org/10.4271/2002-01-0062.Also In
References
- Fuehne, J. Taylor, W. Kim, J. Lee, J.K. “Characterization of Catalytic Converter Mat Material for Predictive Analysis” SAE Technical Paper Series 2000-01-0218 SAE 2000 World Congress Detroit March 6-9 2000
- Taylor, W. Fuehne, J. Lyon, R. Kim, J. Lee J.K. “FEA Simulation and Experimental Validation of Catalytic Converter Structural Integrity” SAE Technical Paper Series 2000-01-0219 SAE 2000 World Congress Detroit March 6-9 2000
- Rui, Y. Xu, G. Kawatsu, M. Chu, D. Yu, P. “Optimum Gap Design and Durability Analysis of Catalytic Converter Assembly” SAE Technical Paper Series 2001-01-0942 SAE 2001 World Congress Detroit March 5-8 2001
- Abaqus Theory Manual