Differential pressure valve for a fuel injection system

Details Differential pressure valve for a fuel injection system Differential pressure valve for a fuel injection system

1981-11-12

1983-05-03

Adee, John

Liquid purification or separation

Filter

With movable means to compress medium

210430, 210485, B01D 3502

Patent

active

043819974

ABSTRACT:
A differential pressure valve is proposed for a fuel injection system of an internal combustion engine. The differential pressure valve includes a diaphragm embodied as the movable valve element, which separates two chambers from one another. A fuel supply line discharges into one chamber and a valve seat carrier provided with a valve opening protrudes into this chamber. This chamber also houses a filter element and a valve spring is disposed coaxially with the valve seat carrier between upper and lower spring plates. The filter element is disposed such that a subsequent change in the tension of the valve spring is also possible. To this end, the filter element can engage the upper spring plate on one side in a sealing manner and on the other side can be supported in a sealing manner in a groove of the wall of the chamber (FIG. 1). In order to assure the free mobility of the filter element, it is provided with an elastically deformable area. As shown in FIG. 2, the filter element may, however, also engage the lower spring plate in a sealing manner and with its other end surroundingly engage the spring plate with as little play as possible, to thereby form a labyrinth seal.

REFERENCES:
patent: 1581947 (1926-04-01), Hobbs
patent: 1987854 (1935-01-01), Humphrey
patent: 3409135 (1968-11-01), Bradley et al.
patent: 3447687 (1969-06-01), Canterbury
patent: 4082676 (1978-04-01), Dulger

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