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:
Jun. 20, 2017
Filed:
May. 23, 2014
Ford Global Technologies, Llc, Dearborn, MI (US);
Mark L. Stickler, Novi, MI (US);
Vince Paul Solferino, Dearborn, MI (US);
Paul Zeng, Inkster, MI (US);
Ross Dykstra Pursifull, Dearborn, MI (US);
Robin Ivo Lawther, Chelmsford, GB;
Patrick Brostrom, White Lake, MI (US);
Jacob Jensen, Farmington Hills, MI (US);
Christopher Woodring, Canton, MI (US);
Joseph F. Basmaji, Waterford, MI (US);
Mark Meinhart, South Lyon, MI (US);
Gopichandra Surnilla, West Bloomfield, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Systems and methods are provided for a high-pressure fuel pump to mitigate audible ticking noise associated with opening and closing of a digital inlet valve of the high-pressure pump. To reduce the ticking noise associated with the high-pressure pump when the engine is idling, a solution is needed that is simple and does not involve retrofitting the fuel system with noise, vibration, and harshness countermeasures to mask the noise. Pressure devices and associated operation methods are provided that involve adding a combination of several check valves, an accumulator, and a flow control valve with weep channels to allow the digital inlet valve to be deactivated during engine idling as defined by a threshold engine speed.