Impact of Ceramic Substrate Web Thickness on Emission Light-Off, Pressure Drop, and Strength 2008-01-0808
The effect of web thickness on emission performance, pressure drop, and mechanical properties was investigated for a series of catalyzed ceramic monolith substrates having cell densities of 900, 600 and 400 cpsi. As expected, thinner webs provide better catalyst light off performance and lower pressure drop, but mechanical strength generally decreases as web thickness is reduced. Good correlations were found between emission performance and geometric parameters based on bare and coated parts. An improved method for estimating the effects of cell density and web thickness on bare substrate strength is described, and the effect of porosity on material strength is also examined. New mechanical strength correlations for ceramic honeycombs are presented. The availability of a range of ceramic product geometries provides options for gasoline exhaust emission design and optimization, especially where increased levels of performance are desired.
Citation: Lauderdale, S., Nickerson, S., Pesansky, J., and Sorensen, C., "Impact of Ceramic Substrate Web Thickness on Emission Light-Off, Pressure Drop, and Strength," SAE Int. J. Fuels Lubr. 1(1):338-346, 2009, https://doi.org/10.4271/2008-01-0808. Download Citation
Author(s):
Susan C. Lauderdale, Seth T. Nickerson, Jonathan D. Pesansky, Charles M. Sorensen
Affiliated:
Corning Incorporated
Pages: 9
Event:
SAE World Congress & Exhibition
ISSN:
1946-3952
e-ISSN:
1946-3960
Also in:
SAE International Journal of Fuels and Lubricants-V117-4EJ, Advanced Catalysts and Substrates, 2008-SP-2198, SAE International Journal of Fuels and Lubricants-V117-4
Related Topics:
Exhaust emissions
Emissions
Ceramics
Pressure
Catalysts
Gasoline
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