Method and system for the catalytic aftertreatment of the exhaust gas of an internal-combustion engine
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United States of America Patent
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Feb 25, 2003
Grant Date -
Feb 28, 2002
app pub date -
Aug 9, 2001
filing date -
Aug 9, 2000
priority date (Note) -
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Abstract
The present invention relates to a method and a corresponding system for catalytic aftertreatment of the exhaust gas of an internal-combustion engine. Two spatially separate catalyst devices are provided in the exhaust gas system. The first of these catalyst devices is arranged in a position close to the engine, and the second catalyst device is arranged in a position away from the engine. An exothermal reaction is caused to take place during warm-up for heating the second catalyst device.
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