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:
Nov. 02, 1999
Filed:
Feb. 17, 1998
Paul F Briggs, Wolcott, CT (US);
George H Bucci, South Windsor, CT (US);
Walbro Corporation, Cass City, MI (US);
Abstract
A bypass fuel pressure regulator disposed downstream of and in communication with a fuel pump outlet to bypass at least a portion of the outlet fuel from the fuel pump corresponding to the engine's fuel demand. The regulator has a bypass passage with an inlet in communication with the fuel pump outlet and an outlet in communication with the fuel tank. A valve assembly is received in and controls the flow of fuel through the bypass passage. The valve assembly has a disc carried on one end of a stem which has an enlarged valve head adjacent its other end which is movable to open and close an outlet opening of the regulator. The disc is disposed generally transverse to the axis of the bypass passage and upstream of the valve head. The disc has at least one and preferably several openings through which fuel flows into the bypass passage through the disc. A spring is received between the regulator body and the disc to yieldably bias the valve head onto a valve seat to close the regulator outlet. When the fuel pump delivers more fuel than is immediately necessary to operate the engine, the valve head is displaced from the valve seat to return the excess fuel to the fuel tank.