Pressure equalizer valve device of fuel injection pump

Details Pressure equalizer valve device of fuel injection pump Pressure equalizer valve device of fuel injection pump

1989-01-17

1990-05-22

Hepperle, Stephen M.

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

123467, 1374936, 1374939, 417296, F16K 1718

Patent

active

049269020

ABSTRACT:
A pressure equalizer valve device incorporated in a fuel delivery valve assembly for use in a fuel injection pump, the fuel delivery valve assembly having a valve chamber and a delivery valve member axially movable in part within the valve chamber, the pressure equalizer valve device including a hollow equalizer valve casing member secured to the delivery valve member and having a valve seat surface portion, an equalizer valve element movable into and out of a position seated on the valve seat surface portion, a spring seat member engaging the equalizer valve element, and a helical compression spring seated at one end on the spring seat member and at the other within the delivery valve member, wherein the equalizer valve element, the spring seat member and the spring are all accommodated within the equalizer valve casing member.

REFERENCES:
patent: 807269 (1905-12-01), Hildebrand
patent: 3479999 (1969-11-01), Keller et al.
patent: 4467767 (1984-08-01), Kampichler et al.
patent: 4577606 (1986-03-01), Bohringer et al.
patent: 4648369 (1987-03-01), Wannenwetsch
patent: 4651779 (1987-03-01), Filippi et al.
patent: 4692102 (1987-09-01), Hafele et al.

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