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Title: Current-biased potentiometric NOx sensor for vehicle emissions

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.

Inventors:
 [1];  [2]
  1. Castro Valley, CA
  2. San Jose, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
903352
Patent Number(s):
7153401
Application Number:
10/378,578
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02A - TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Martin, Louis Peter, and Pham, Ai Quoc. Current-biased potentiometric NOx sensor for vehicle emissions. United States: N. p., 2006. Web.
Martin, Louis Peter, & Pham, Ai Quoc. Current-biased potentiometric NOx sensor for vehicle emissions. United States.
Martin, Louis Peter, and Pham, Ai Quoc. Tue . "Current-biased potentiometric NOx sensor for vehicle emissions". United States. https://www.osti.gov/servlets/purl/903352.
@article{osti_903352,
title = {Current-biased potentiometric NOx sensor for vehicle emissions},
author = {Martin, Louis Peter and Pham, Ai Quoc},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {12}
}

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Works referenced in this record:

The effect of additives in tin oxide on the sensitivity and selectivity to NOx and CO
journal, January 1995


Potentiometric NOx sensor based on stabilized zirconia and NiCr2O4 sensing electrode operating at high temperatures
journal, February 2001


Critical review of nitrogen monoxide sensors for exhaust gases of lean burn engines
journal, August 2000