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:
Dec. 15, 2009
Filed:
Aug. 01, 2006
Douglas J. Moening, Farmington, MI (US);
Scott A. Kegebein, Howell, MI (US);
Eric M. Hall, Rochester Hills, MI (US);
Gary L. Rogers, Davison, MI (US);
Zhong Wang, Westland, MI (US);
Douglas J. Moening, Farmington, MI (US);
Scott A. Kegebein, Howell, MI (US);
Eric M. Hall, Rochester Hills, MI (US);
Gary L. Rogers, Davison, MI (US);
Zhong Wang, Westland, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A fuel level monitoring system for a fuel system having a primary fuel tank and a secondary fuel tank includes a fuel level sensor that is disposed within the secondary fuel tank and that generates a first signal. An empty switch is disposed within the secondary fuel tank and generates a second signal. A control module determines a condition of one of the fuel level sensor and the empty switch based on the first signal, the second signal and a plurality of signal thresholds.