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New Tests for Characterizing the Durability of a Ceramic Catalytic Converter Package
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Abstract
New test methods were developed to characterize the high temperature durability of intumescent mats that are used to mount ceramic catalyst supports in stainless steel cans. The key attribute of these tests is the use of an electric resistance heating method to maintain a temperature gradient through the thickness of the mat when a cyclic or constant shear stress is applied to the mat interface. These tests are simple to perform and do not require expensive equipment or highly skilled operators. Using these new test methods, the durability of ceramic preconverters mounted with 4070 gm/m2 intumescent mat was studied. The results of these tests indicate that a preconverter package with 4070 gm/m2 intumescent mat can perform satisfactorily in the close-coupled application where temperatures exceed 900°C.
The mat performance can be quantified in terms of applied stress and test temperature by utilizing the experimental methods described in the present study.
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Citation
Reddy, K., Helfinstine, J., and Gulati, S., "New Tests for Characterizing the Durability of a Ceramic Catalytic Converter Package," SAE Technical Paper 960559, 1996, https://doi.org/10.4271/960559.Also In
References
- Socha L. S. Thompson D. F. Weber P. A. “Reduced Energy and Power Consumption for Electrically Heated Extruded Metal Converters” SAE Paper No. 930383 1993
- Burk P. L. Hochmuch J. K. Anderson D. R. Sung S. Tauser S. J. Tolentino C. O. Rogalo J. Miles G. Niejako M Punke A. Dahle U. “Cold Start Hydrocarbon Emission Control” SAE Paper No. 950410 1995
- Hu Z. Heck R. M. “High Temperature Ultra Stable Close-Coupled Catalysts” SAE Paper No. 950254 1995
- Gulati S. T. Socha L. S. Then P. M. “Design and Performance of a Ceramic Preconverter System” CAPoC3 Conference Brussels, Belgium 1991
- Socha L. S. Gulati S. T. Locker R. J. Then P. M. Zink U. “Advances in Durability and Performance of Ceramic Preconverter Systems” SAE Paper No. 950407 1995
- Locker R. J. Schad M. J. Sawyer C. B. “Hot Vibration Durability of Ceramic Preconverters” SAE Paper No. 952414 Int. Fuels & Lubricants conference Toronto 1995
- Stroom P. D. Merry R. P. Gulati S. T. “Systems Approach to Packaging Design for Automotive Catalytic Converters” SAE Paper No. 900500 1990
- Gulati S. T. “Robust Packaging System for Diesel/Natural Gas Oxidation Catalyst” SAE Paper No. 96047 1996
- Gulati S. T. Eyck J. Ten Lebold A. “New Development in Packaging of Ceramic Honeycomb catalysts” SAE Paper No. 922252 1992
- Gulati S. T. Eyck J. Ten Leybold A. “Durable Packaging Design for Cordierite Ceramic Catalysts for Motorcycle Application” SAE Paper No. 930161 1993
- Reddy K. P. Gulati S. T. “Effect of Contour, Size and Cell Structure on Compressive Strength of Porous Cordierite Ceramic Substrates” SAE Paper No. 932663 , Fuels and Lubrication Conference 1993
- Locker R. J. Sawyer C. B. Schad M. J. “Quantification of Ceramic Preconverter Hot Vibration Durability” SAE Paper No. 960563 1996