Highly porous mullite particulate filter substrate
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United States of America Patent
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Aug 11, 2009
Grant Date -
Mar 27, 2008
app pub date -
Dec 30, 2005
filing date -
Oct 28, 2002
priority date (Note) -
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Abstract
A typically monolithic particulate filter including a highly porous block made primarily of intertangled polycrystalline mullite fibers, a set of channels formed through the block, and a set of porous walls separating adjacent channels. Exhaust gas is flowed through the channels and interacts with the walls such that particulate matter carried in the exhaust gas, such as soot particles, is screened out by porous fibrous mullite walls.
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