Catalytic muffler having crossover passageway for secondary air
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United States of America Patent
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-
Mar 20, 2012
Grant Date -
Dec 3, 2009
app pub date -
May 28, 2008
filing date -
May 28, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A catalytic muffler that treats the exhaust gases of an internal combustion engine. The catalytic muffler includes a catalyst chamber, a catalyst disposed in the catalyst chamber, an upstream chamber disposed upstream of the catalyst, an exhaust inlet configured to receive exhaust gases, an exhaust outlet configured to discharge converted gases converted by the catalyst to the atmosphere, and further configured to receive secondary air, and a passageway communicating between the exhaust outlet and the upstream chamber, and configured to provide the secondary air received by the exhaust outlet to the upstream chamber.
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