Ceramic filter for exhaust gas emission control
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United States of America Patent
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Jul 1, 2008
Grant Date -
Sep 28, 2006
app pub date -
Mar 17, 2003
filing date -
Mar 15, 2002
priority date (Note) -
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Abstract
A ceramic filter assembly that resists cracking. The ceramic filter assembly is formed by integrating a plurality of columnar honeycomb filters made of a porous ceramic sintered material with a ceramic sealing material layer and formed to have a substantially elliptical cross sectional shape. The honeycomb filters includes square columnar honeycomb filters in which the ratio between the lengths of their long sides and short sides is between 1.1 and 3.0. The honeycomb filters are arranged so that the long sides and the short sides are respectively parallel to the major axis and the minor axis of the assembly.
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