Current-biased potentiometric NOx sensor for vehicle emissions
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United States of America Patent
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Dec 26, 2006
Grant Date -
Nov 13, 2003
app pub date -
Feb 27, 2003
filing date -
May 13, 2002
priority date (Note) -
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Abstract
A nitrogen oxide sensor system for measuring the amount of nitrogen oxide in a gas. A first electrode is exposed to the gas. An electrolyte is positioned in contact with the first electrode. A second electrode is positioned in contact with the electrolyte. A means for applying a fixed current between the first electrode and the second electrode and monitoring the voltage required to maintain the fixed current provides a measurement of the amount of nitrogen oxide in the gas.
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