The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2005
Filed:
Oct. 07, 2004
Owen H. Bailey, Concord, OH (US);
Jean J. Balland, Metz, FR;
Sergio Quelhas, Ann Arbor, MI (US);
Bart Schreurs, Athus, BE;
Owen H. Bailey, Concord, OH (US);
Jean J. Balland, Metz, FR;
Sergio Quelhas, Ann Arbor, MI (US);
Bart Schreurs, Athus, BE;
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A diagnostic system for monitoring catalyst performance in an exhaust system comprises a plurality of treatment devices catalytically treating an exhaust gas stream, and a plurality of gas sensors for monitoring the catalyst performance of the treatment devices to determine when sulfur poisoning occurs. An on-board diagnostic system receives signals from the gas sensors, and, based upon response time differentials between sensors, determines whether the treatment devices are experiencing sulfur poisoning.