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. 08, 2011
Filed:
Jun. 08, 2007
Robert J. Genslak, New Baltimore, MI (US);
Igor Anilovich, Walled Lake, MI (US);
Justin F. Adams, Ypsilanti, MI (US);
Jeffry A. Helmick, Oxford, MI (US);
Edward Stuteville, Linden, MI (US);
Wesley W. Wald, Linden, MI (US);
Vidyapriya Srinivasan, South Lyon, MI (US);
Robert J. Genslak, New Baltimore, MI (US);
Igor Anilovich, Walled Lake, MI (US);
Justin F. Adams, Ypsilanti, MI (US);
Jeffry A. Helmick, Oxford, MI (US);
Edward Stuteville, Linden, MI (US);
Wesley W. Wald, Linden, MI (US);
Vidyapriya Srinivasan, South Lyon, MI (US);
Abstract
A diagnostic system for an exhaust system including a catalyst and a post-catalyst oxygen sensor is provided. The system generally includes a fuel control module that commands fuel to transition from a rich condition to a lean condition and that commands fuel to transition from the lean condition to the rich condition. A first diagnostic module monitors the post-catalyst oxygen sensor during the transition from the rich condition to the lean condition. A second diagnostic module monitors the catalyst during the transition from the lean condition to the rich condition.