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:
Mar. 22, 2022
Filed:
Oct. 20, 2020
Ford Global Technologies, Llc, Dearborn, MI (US);
Aed Dudar, Canton, MI (US);
Dennis Yang, Canton, MI (US);
Daniel Frank Cragel, Livonia, MI (US);
Russell Randall Pearce, Ann Arbor, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Systems and methods are presented herein for detecting a degradation condition in a variable volume device of a fuel tank of a vehicle. In one example, the issues described above may be addressed by a diagnostic method for a vehicle with a valve and a fuel tank having a variable volume device internal to the tank, comprising: operating the fuel tank over a diurnal cycle; and differentiating between degradation of the fuel tank and the variable volume device based on a fuel tank pressure at a plurality of different valve conditions; and indicating the differentiated degradation.