Exhaust gas purifying system
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United States of America Patent
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Mar 23, 2004
Grant Date -
Oct 3, 2002
app pub date -
Apr 3, 2002
filing date -
Apr 3, 2001
priority date (Note) -
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Abstract
An exhaust gas purifying system for a vehicle includes a hydrogen enriching device that increases a component ratio of hydrogen with respect to reducing gas components in exhaust gas, a NOx treating catalyst and a HC trap catalyst. The hydrogen enriching device, the NOx treating catalyst and the NOx treating catalyst are arrayed in this order in the exhaust gas passageway.
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