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. 17, 2002
Filed:
Dec. 12, 2000
Steven J. Dickerson, Lake in the Hills, IL (US);
John J. Bryjak, Park Ridge, IL (US);
Michael A. Majewski, Joliet, IL (US);
International Engine Intellectual Property Company, L.L.C., Warrenville, IL (US);
Abstract
This invention provides a pump with a close-mounted valve for a hydraulic fuel system in an internal combustion engine. The hydraulic fuel system may have a high pressure pump connected to a low pressure side and high pressure reservoirs. The pump has a drive shaft, a shaft cylinder, one or more cylinders, and a close-mounted valve. The close-mounted valve has a valve body, a valve spool, a valve spring, and a valve coil. The valve body is positioned inside a shaft cavity formed by the shaft cylinder. The close-mounted valve may control the volume and pressure to reduce or eliminate the dumping of high-pressure hydraulic fluid in the hydraulic fuel system.