Device for purifying exhaust gas of an internal combustion engine
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United States of America Patent
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-
Jun 29, 2004
Grant Date -
Jun 20, 2002
app pub date -
Jul 9, 2001
filing date -
Dec 19, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for purifying exhaust gas of an internal combustion engine which provides improved purifying efficiency even in a lean operating condition without deteriorating the fuel efficiency. The device includes an electrochemical catalyst 5 installed in the exhaust system 3 of the internal combustion engine 1, the electro chemical catalyst 5 containing an electron conducting substance and an ion conducting substance, the oxidizing reaction and the reducing reaction being promoted by the conduction of ions and electrons, thereby to electrochemically purify the exhaust gas G in the exhaust system.
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