Patent ID: 9587603
Date: 2017-03-07
CPC Classifications: F02M,F16K,Y10T

Claim:
1. A fuel pressure regulator for a fuel delivery system of an internal combustion engine, the pressure regulator comprising: a unitary housing having a wall defining an interior communicating with first and second opposing ends, the first end including an inlet opening, and the second end including at least one outlet opening so that fuel can enter the inlet opening, move through the interior and exit from the outlet opening in a single direction, the housing defining an integral valve seat surface in the interior, a generally cylindrical cover provided at the second end and disposed entirely within the interior of the housing, the cover including at least one hole extending longitudinally through the cover that communicates the outlet opening with the interior of the housing, a valve structure, movable adjacent to the wall and within the interior, to control fuel flow between the inlet opening and outlet opening, a first end of the valve structure defining a cup portion having an interior space, the valve structure having a generally conical surface that is constructed and arranged to engage the valve seat surface to close the inlet opening, and a spring disposed at least partially in the interior space of the cup portion and engaged between the valve structure and the cover so as to force the valve structure to close the inlet opening, wherein the valve structure and spring are constructed and arranged so that when the pressure of fuel at the inlet opening is greater than the force exerted by the spring, the fuel pushes the valve structure against the bias of the spring and away from sealed engagement with the valve seat surface so that fuel flows solely around and past a periphery of the valve structure between the valve structure and the wall to the outlet opening without flowing through the interior space of the cup portion, until the force of the spring is greater than the pressure of the fuel, with the spring returning the valve structure to sealed engagement with the seat surface, closing the inlet opening.