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:
Oct. 28, 2008
Filed:
Feb. 06, 2007
Igor Anilovich, Walled Lake, MI (US);
Thomas L. Ting, Medina, MN (US);
Zhong Wang, Westland, MI (US);
Justin F. Adams, Ypsilanti, MI (US);
Igor Anilovich, Walled Lake, MI (US);
Thomas L. Ting, Medina, MN (US);
Zhong Wang, Westland, MI (US);
Justin F. Adams, Ypsilanti, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
An engine exhaust sensor diagnostic system for an exhaust system including a catalyst and a post-catalyst oxygen sensor includes a first module that calculates a total integrated area based on a signal generated by the post-catalyst oxygen sensor. A second module compares the total integrated area to a threshold integrated area and generates a pass status signal when the total integrated area is less than the threshold integrated area.