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Thermal Cyclic Evaluation of Catalytic Converter Mount Systems
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English
Abstract
A bench scale thermal cycling device was designed and constructed to expose large numbers of converters to simulated automobile cycling conditions. Ceramic catalytic converter systems exposed to this thermal cycling technique were observed to experience equivalent or more severe aging, depending on the aging temperature, than isothermal exposures.
Cyclic thermal exposures were examined for two mat basis weights. Each mat was examined at two gap bulk densities. Change in converter residual shear strength, as a function of accumulated thermal cycles, was observed to follow a logarithmic relationship. Results of thermal cyclic engine exposures showed a strong correlation with laboratory bench studies.
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Citation
Locker, R. and Sawyer, C., "Thermal Cyclic Evaluation of Catalytic Converter Mount Systems," SAE Technical Paper 962078, 1996, https://doi.org/10.4271/962078.Also In
References
- Locker R J Schad M J Sawyer C B “Hot Vibration Durability of Ceramic Preconverters,” SAE Paper No 952414 October 17 1995
- Locker R J Schad M J Sawyer C B “Quantification of Ceramic Preconverter Hot Vibration Durability,” SAE Paper No 960563 February 27 1996
- Stroom P D Merry R P Gulati S T “Systems Approach to Packaging Design for Automotive Catalytic Converters,” SAE Paper No 900500 February 26 1990
- Takada T Tanaka T “Development of a Highly Heat-Resistant Metal Supported Catalyst,” SAE Paper No 910615 February 25 1991