High-Temperature Substrates and Washcoats for Auto Exhaust Emission Control 872131
The performance of a new monolith-type automobile exhaust catalyst is described. The catalyst under development employs a high-melting ceramic substrate (with about 200°C margin over cordierite). The washcoat's performance was found to be sufficient to permit a reduction of the catalyst's volume by about 30% while still showing competitive performance versus a full-size commercial catalyst. Engine dynamometer and vehicle emission test data are discussed for illustration.
The new ceramic has a higher density than cordierite; the paper discusses the effects of catalyst density on emission performance in the heat-up and cool-down portions of emission cycles. The results show no density penalty in FTP tests with the new ceramic.
Citation: Kubsh, J. and Weissert, D., "High-Temperature Substrates and Washcoats for Auto Exhaust Emission Control," SAE Technical Paper 872131, 1987, https://doi.org/10.4271/872131. Download Citation
Author(s):
Joseph E. Kubsh, Deborah J. Weissert
Affiliated:
W. R. Grace & Co., Research Div., Columbia, MD
Pages: 14
Event:
1987 SAE International Fall Fuels and Lubricants Meeting and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1987 transactions: Fuels and Lubricants-V96-7
Related Topics:
Exhaust emissions
Environmental testing
Catalysts
Emissions certification
Emissions
Ceramics
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