Invention Grant
- Patent Title: Vented pressure relief valve for an internal combustion engine fuel system
- Patent Title (中): 用于内燃机燃油系统的通风泄压阀
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Application No.: US13548697Application Date: 2012-07-13
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Publication No.: US08925523B2Publication Date: 2015-01-06
- Inventor: Deepak Sahini , W. Joseph Satterfield , Robert P. Erickson , Jeffrey J. Sullivan , Donald J. Benson
- Applicant: Deepak Sahini , W. Joseph Satterfield , Robert P. Erickson , Jeffrey J. Sullivan , Donald J. Benson
- Applicant Address: US MN Minneapolis
- Assignee: Cummins Intellectual Property, Inc.
- Current Assignee: Cummins Intellectual Property, Inc.
- Current Assignee Address: US MN Minneapolis
- Agency: Faegre Baker Daniels LLP
- Main IPC: F02M69/54
- IPC: F02M69/54 ; F02M59/46 ; F02M37/04

Abstract:
A fuel pressure relief valve is positioned along a fuel circuit of an internal combustion engine. The pressure relief valve includes a valve body, a first plunger positioned within the valve body, a second plunger positioned within the first plunger, and a valve plug securing the first and second plungers in the valve body. A spring is positioned between the valve plug and the second plunger. Fuel leakage into the pressure relief valve causes the pressure relief valve to lift undesirably in the absence of excessive fuel pressure. The undesirable lifting undesirably affects the operation of the fuel rail and causes wear and shortened life of the pressure relief valve. The first plunger has at least one relief passage or groove located on an exterior surface, relieving the undesirable pressure buildup from a chamber formed between the valve body and the first plunger, eliminating undesirable liftoff events.
Public/Granted literature
- US20140014074A1 VENTED PRESSURE RELIEF VALVE FOR AN INTERNAL COMBUSTION ENGINE FUEL SYSTEM Public/Granted day:2014-01-16
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