Fuel pressure regulator

Details Fuel pressure regulator Fuel pressure regulator

1985-03-28

1986-12-02

Weakley, Harold W.

Internal-combustion engines

Charge forming device

Fuel injection system

123512, 137510, 267177, 92 97, F02M 3704

Patent

active

046256954

ABSTRACT:
A pressure regulator valve for use in fuel systems for internal combustion engines which includes a two-part housing lamination with a diaphragm between the bottom and top housings and a valve back-up pad above the diaphragm. The diaphragm is responsive to fuel pressure and will open a valve to by-pass fuel to a fuel tank. A centering diaphragm functions to locate a back-up pad above the valve seat. In one embodiment, the regulator valve pad controlled by the diaphragm is dimensioned with a diameter significantly larger than the effective valve seat area to insure full valve seat opening even when the valve pad is cocked slightly relative to the valve seat area. A press-on spring cap or cup allows calibration of the unit during assembly with a strike-in to fix the calibration in a tamperproof structure.

REFERENCES:
patent: 1783646 (1930-12-01), Hajek
patent: 1786844 (1930-12-01), Hesselman
patent: 1871535 (1932-08-01), Lattuer
patent: 1946188 (1934-02-01), Birch
patent: 2577967 (1951-12-01), Hughes
patent: 2704548 (1955-03-01), Ralston
patent: 3228419 (1966-01-01), Smith
patent: 3662779 (1972-05-01), Weber
patent: 4204561 (1980-05-01), Ludwig

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