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:
Feb. 13, 2024
Filed:
Mar. 18, 2022
Ford Global Technologies, Llc, Dearborn, MI (US);
Yun Xing, Canton, MI (US);
John Erik Mikael Hellstrom, Ann Arbor, MI (US);
Natalie Remisoski, Wyandotte, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Methods and systems are provided for a vehicle engine fuel system. In one embodiment the method comprises indicating degradation of each of a low-pressure fuel pump and a fuel filter based on a comparison of a pressure differential between a high-pressure pump pressure setting to an actual pressure and a demanded fuel flow to an engine, the indication distinguishing between pump ageing and filter degradation. The method may include adjusting operation of the low-pressure fuel pump in response to the comparison of the high-pressure pump pressure setting and pressure of fuel entering a high-pressure pump. In one example, the fuel filter may be positioned to filter fuel drawn from a fuel tank before entering the low-pressure fuel pump.