Axial Fluid Pressure Regulator

Abstract

The present disclosure relates to pressure relief and pressure regulating valves. More specifically, the present invention relates to a miniature axial fuel pressure regulator having: a regulator body including a housing member and a regulating member; a pin axially disposed within the regulator body, the pin comprising an upper end having a circumferential groove, a lower end having a fluid inlet, one or more fluid discharge ports, and a fluid passage connecting the fluid inlet to the one or more fluid discharge ports; an elastomeric O-ring, conformally positioned within a circumferential groove on the upper end of the pin, wherein the elastomeric O-ring contacts a raised annular valve seat when the fluid pressure regulator is closed; and a biasing member coupled to The pin is also configured to maintain the elastomeric O-ring in contact with the raised annular valve seat to control the opening pressure of the fluid pressure regulator.

Description

technical field [0001] The present disclosure relates to pressure relief and pressure regulating valves. More specifically, the present disclosure relates to a miniature inline fluid pressure regulating valve having one or more flow passages optimized to minimize pressure buildup as fuel flow increases . Background technique [0002] Internal combustion fuel injection systems typically require some form of pressure control device (eg, a pressure regulator or pressure relief valve) to maintain proper fuel pressure at the fuel injectors. Conventional fuel pressure regulators may have elastomeric diaphragms or molded seals in their devices. Such conventional fuel pressure regulators are generally able to maintain reasonable pressure integrity with good pressure gradients. For example, a conventional 350kPa@20LPH regulator can exhibit a pressure gradient of 0.18kPa / LPH between 20LPH and 250LPH flow, and can achieve flow rates up to 400LPH with no indication of flow restrictio...

AI Technical Summary

Problems solved by technology

Disadvantageously, conventional fuel pressure regulators exhibit significantly increased pressure drop at low flow rates due to the compression of the fuel regulator seal by the housing sealing surface causing a turbulent flow path which acts to increase the pressure drop

Also, conventional pressure regulators are too large and expensive for most small engine applications

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