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:
Apr. 17, 2007
Filed:
Apr. 07, 2005
Applicants:
Chris J Booms, Milford, MI (US);
Roger C Sager, Munith, MI (US);
William B Blomquist, Lake Orion, MI (US);
Inventors:
Chris J Booms, Milford, MI (US);
Roger C Sager, Munith, MI (US);
William B Blomquist, Lake Orion, MI (US);
Assignee:
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 33/02 (2006.01); F02B 77/08 (2006.01); G01M 3/04 (2006.01); G01M 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A loose or missing fuel cap detection method for an evaporative emission control system of an automotive vehicle detects a loose or missing fuel cap based in part on whether fuel level changed. The method determines whether the fuel level changed, which is indicative of a refueling event. The method then determines if one or more leaks are present. If the fuel level changed and one or more leaks are present, the method determines that the fuel cap is loose or missing.