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Title: Analysis and optimization of gel-cast ceramic foam diesel particulate filter performance
Authors: Williams, Andrew M.
Garner, Colin P.
Binner, J.G.P.
Keywords: Diesel particulate filter
Gel-cast ceramic foam
Back pressure
Filtration efficiency
Model
Depth bed filter
Optimization
Issue Date: 2008
Publisher: © Professional Engineering Publishing
Citation: WILLIAMS, A.M., GARNER, C.P. and BINNER, J.G.P., 2008. Analysis and optimization of gel-cast ceramic foam diesel particulate filter performance. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 22 (11), pp. 2235-2247
Abstract: Gel-cast ceramic foams potentially offer a more robust configurable alternative filtration medium to monolithic wall flow filters (WFFs) for the reduction in particulate matter (PM) emissions from diesel internal combustion engines. The fundamental back pressure and filtration efficiency characteristics of gel-cast ceramic foam diesel particulate filters (DPFs) have been investigated. Methodology is developed for the first time that allows the calculation of the effect of local PM loading on the pressure drop characteristics from experimental data without problems caused by the non-uniform PM loading in the filter that can be applied to all depth bed filtration media. The back pressure and filtration efficiency relationships were used to develop graphical design spaces to aid development of application-specific DPFs. Effects of PM distribution on the pressure drop of the filter are presented. Filters with a non-even distribution of PM were found to have lower pressure drops than filters with an evenly distributed PM for the same average specific PM loadings. The predictions showed that gel-cast ceramic foams can achieve comparable back pressure, filtration volume, and PM holding capacity with WFFs with a lower filtration efficiency of about 80 per cent. The model demonstrated that greater than 90 per cent filtration efficiency can be achieved with filter volumes of about 0.6 times the volume of a WFF with a lower PM holding capacity.
Description: This article was published in the journal, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering [© Professional Engineering Publishing]. The definitive version is available at: http://journals.pepublishing.com/content/119783/?sortorder=asc&p_o=28
Version: Published
DOI: 10.1243/09544070JAUTO840
URI: https://dspace.lboro.ac.uk/2134/4423
ISSN: 0954-4070
Appears in Collections:Published Articles (Materials)
Published Articles (Mechanical and Manufacturing Engineering)

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