Catalyst assembly for treating engine exhaust
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United States of America Patent
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Sep 1, 2015
Grant Date -
Aug 18, 2011
app pub date -
Feb 16, 2010
filing date -
Feb 16, 2010
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Abstract
According to one aspect of the present invention, a catalyst assembly is provided for treating an exhaust from an engine. In one embodiment, the catalyst assembly includes a first catalyst material catalytically active at a first temperature and loaded at a first catalyst material loading, the first catalyst material including a first base metal loading, and a second catalyst material catalytically active at a second temperature lower than the first temperature and loaded at a second catalyst material loading, the second catalyst material including a second base metal loading, wherein the second base metal loading is higher than the first base metal loading.
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