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. 29, 2016
Filed:
Mar. 15, 2013
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Bradley C. Gibson, Swartz Creek, MI (US);
Eric M. Hall, Rochester Hills, MI (US);
John W. Siekkinen, Novi, MI (US);
Stephen Paul Levijoki, Swartz Creek, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 41/14 (2006.01); G01R 27/02 (2006.01); F01N 11/00 (2006.01);
U.S. Cl.
CPC ...
G01R 27/02 (2013.01); F02D 41/1456 (2013.01); F02D 41/1494 (2013.01); F02D 41/1495 (2013.01); F01N 11/007 (2013.01); F01N 2560/025 (2013.01); F02D 41/1441 (2013.01); F02D 41/1455 (2013.01);
Abstract
A diagnostic system of a vehicle includes an impedance module and a diagnostic module. The impedance module determines an impedance of a sensing element of an exhaust gas oxygen sensor based on a response of the sensing element to a change in current through the sensing element. The diagnostic module selectively diagnoses a fault associated with the exhaust gas oxygen sensor based on the impedance of the sensing element.