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Rigid particulate matter sensor

United States Patent

7,891,232
February 22, 2011
View the Complete Patent at the US Patent & Trademark Office
A sensor to detect particulate matter. The sensor includes a first rigid tube, a second rigid tube, a detection surface electrode, and a bias surface electrode. The second rigid tube is mounted substantially parallel to the first rigid tube. The detection surface electrode is disposed on an outer surface of the first rigid tube. The detection surface electrode is disposed to face the second rigid tube. The bias surface electrode is disposed on an outer surface of the second rigid tube. The bias surface electrode is disposed to face the detection surface electrode on the first rigid tube. An air gap exists between the detection surface electrode and the bias surface electrode to allow particulate matter within an exhaust stream to flow between the detection and bias surface electrodes.
Hall; Matthew (Austin, TX)
Board of Regents, The University of Texas System (Austin, TX)
12/ 275,791
November 21, 2008
U.S. GOVERNMENT INTEREST This invention was made with government support under Contract No. DE-FC26-06NT42966 awarded by the U.S. Department of Energy. The government has certain rights in the invention.