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:
Jan. 28, 2020
Filed:
Mar. 23, 2015
Ford Global Technologies, Llc, Dearborn, MI (US);
Jonathan Denis Crowe, Northville, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Methods and systems are provided for removing entrapped air from oil flowing within a valve deactivation hydraulic circuit of an engine. In one example, the system may include a cylinder head cap, a variable displacement engine oil control valve (VDE OCV), a variable control timing oil control valve (VCT OCV), a rocker arm, a switch of the rocker arm, a pressure relief valve and a switch of the pressure relief valve, the cylinder head cap having an inbound interior surface of the cylinder head cap, the valve deactivation hydraulic circuit having a switching gallery and a hydraulic lash adjuster oil gallery. The hydraulic lash adjuster oil gallery may provide oil pressure communication to the switching gallery, the hydraulic lash adjuster oil gallery, the switch of the rocker arm, the switch of the pressure relief valve, the VDE OCV, and the VCT OCV.