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. 26, 2017
Filed:
Sep. 18, 2014
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Aed M. Dudar, Canton, MI (US);
Chingpo Liu, Novi, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01M 15/04 (2006.01); B60K 15/077 (2006.01); G01M 3/02 (2006.01); G01M 3/32 (2006.01); F02M 37/00 (2006.01); F02M 25/08 (2006.01); B60K 15/03 (2006.01);
U.S. Cl.
CPC ...
B60K 15/077 (2013.01); F02M 25/0836 (2013.01); F02M 37/0064 (2013.01); G01M 3/025 (2013.01); G01M 3/3236 (2013.01); B60K 2015/03217 (2013.01); B60K 2015/03361 (2013.01);
Abstract
A method, comprising indicating an amount of a residual fuel in a fuel tank based on an initial rate of change of a fuel tank pressure during a refueling event. The initial rate of change of fuel tank pressure is proportionate to the amount of vapor dome space within the fuel tank, and thus proportionate to the amount of residual fuel left in the fuel tank. In this way, the fuel tank fill level may be accurately quantified, even during cases where the fill level indicator experiences degradation.