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:
Sep. 14, 2010
Filed:
Jun. 03, 2005
Wenbo Wang, Novi, MI (US);
Richard B. Jess, Haslett, MI (US);
David N. Belton, Birmingham, MI (US);
Chris R. Thelen, Okemos, MI (US);
Jeffrey M. Hutmacher, Fowlerville, MI (US);
William Western, Howell, MI (US);
Ian J. Macewen, White Lake, MI (US);
Robert J. Genslak, Macomb, MI (US);
Wenbo Wang, Novi, MI (US);
Richard B. Jess, Haslett, MI (US);
David N. Belton, Birmingham, MI (US);
Chris R. Thelen, Okemos, MI (US);
Jeffrey M. Hutmacher, Fowlerville, MI (US);
William Western, Howell, MI (US);
Ian J. Macewen, White Lake, MI (US);
Robert J. Genslak, Macomb, MI (US);
Abstract
An oxygen storage capacity (OSC) monitoring system for a vehicle having a catalytic converter includes an inlet oxygen sensor that generates an inlet sensor signal (ISS) based on an oxygen content of exhaust flowing into the catalytic converter. A control module receives the ISS, increases a closed loop fuel control gain during a first period and determines a fuel control factor based on the ISS during the first period. The control module determines an OSC when an average value of the fuel control factor is greater than a first value and is less than a second value during the first period.