Method and system for regenerating NOx adsorbers and/or particulate filters
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United States of America Patent
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Dec 21, 2004
Grant Date -
May 27, 2004
app pub date -
Nov 21, 2002
filing date -
Nov 21, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
An active system for regenerating a NO.sub.x adsorber and a particulate filter, the system comprising a fuel source, a reformer for generating hydrogen and carbon monoxide in fluid communication with the fuel source, a first valve, a second valve, and a third valve in fluid communication with the reformer, an oxidation catalyst, a NO.sub.x adsorber located downstream from the oxidation catalyst, a particulate filter located downstream from the NO.sub.x adsorber; and wherein the first valve, the second valve, and the third valve control fluid flow from the reformer to the oxidation catalyst, the NO.sub.x adsorber, and the particulate filter.
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