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:
May. 31, 2016
Filed:
Mar. 10, 2015
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Aed Mohammad Dudar, Canton, MI (US);
Robert Roy Jentz, Westland, MI (US);
Timothy DeBastos, Royal Oak, MI (US);
James Michael Kerns, Trenton, MI (US);
Michael Igor Kluzner, Oak Park, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M 33/02 (2006.01); F02M 25/08 (2006.01); F02D 41/00 (2006.01); G01M 15/09 (2006.01);
U.S. Cl.
CPC ...
F02M 25/0809 (2013.01); F02D 41/003 (2013.01); F02D 41/0032 (2013.01); G01M 15/09 (2013.01); Y10T 137/0379 (2015.04); Y10T 137/7722 (2015.04);
Abstract
Methods and systems are provided for monitoring a fuel vapor recovery system including a fuel tank isolation valve coupled between a fuel tank and a canister. During selected conditions, the valve is modulated and pressure pulsations in the fuel vapor recovery system are monitored. Valve degradation is identified based on correlations between the valve modulation and the resultant pressure pulsations.