Combined oxygen and NOx sensor
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United States of America Patent
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-
Nov 30, 2004
Grant Date -
Apr 25, 2002
app pub date -
Dec 7, 2001
filing date -
Sep 23, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A combined oxygen and NO.sub.x sensor is provided. Generally, the combined sensor employs a sensor body that includes two different types of electrodes--oxygen-porous electrode layers and dissociative oxygen-porous electrode layers. In accordance with one embodiment of the present invention, the sensor comprises a sensor body, an oxygen content electrical signal output, and a NO.sub.x content electrical signal output. The sensor body is disposed in the gas and comprises a plurality of oxygen-porous electrode layers and a plurality of dissociative oxygen-porous electrode layers. The dissociative oxygen-porous electrode layers comprise a material selected to catalyze dissociation of NO.sub.x into nitrogen and oxygen.
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