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:
Mar. 21, 2017
Filed:
Aug. 30, 2011
Robert J. Genslak, Macomb, MI (US);
Robert E. Heger, Bloomfield Hills, MI (US);
Edward Stuteville, Linden, MI (US);
Jerry J. Sheahan, Canton, MI (US);
Thomas J. Large, Oxford, MI (US);
Robert J. Genslak, Macomb, MI (US);
Robert E. Heger, Bloomfield Hills, MI (US);
Edward Stuteville, Linden, MI (US);
Jerry J. Sheahan, Canton, MI (US);
Thomas J. Large, Oxford, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A system for a vehicle includes an oxygen storage capacity (OSC) determination module, a delay determination module, a correction module, and a fault detection module. The OSC determination module determines an OSC period of a catalyst of an exhaust system based on first and second amounts of oxygen measured using first and second oxygen sensors located upstream and downstream of the catalyst, respectively. The delay determination module determines a delay period of the second oxygen sensor. The correction module sets a corrected OSC period for the catalyst based on a difference between the OSC period and the delay period. The fault detection module selectively indicates that a fault is present in the catalyst based on the corrected OSC period.