Filter for in-tank fuel pump

Details Filter for in-tank fuel pump Filter for in-tank fuel pump

1996-08-28

1998-03-17

Savage, Matthew O.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Check valve

210188, 210316, 210317, 210346, 210461, 210472, 210487, 210499, B01D 3502

Patent

active

057282927

ABSTRACT:
A filter is provided for use with an in-tank fuel pump for an internal combustion engine. The filter is disposed within a fuel tank and includes a main filtration chamber connected to an inlet of the fuel pump and a return fuel chamber connected to the engine for introducing thereto return fuel from the engine. The main filtration chamber has an upper side peripheral wall formed from a meshed filter medium. The return fuel chamber is connected to the main filtration chamber in such a manner that the upper side peripheral wall of the main filtration chamber serves as a partition wall between the main filtration chamber and the return fuel chamber. In one embodiment, the return fuel chamber has a peripheral wall formed from sheet or plate impermeable to fluid. In another embodiment, the return fuel chamber has a peripheral wall formed from a meshed filter medium, the meshes of which are smaller than the meshes of the meshed filter medium from which the upper side peripheral wall of the main filtration chamber is formed.

REFERENCES:
patent: 1836269 (1931-12-01), McKenzie
patent: 3165473 (1965-01-01), Pall et al.
patent: 5049267 (1991-09-01), Sasaki et al.
patent: 5186152 (1993-02-01), Cortochiato et al.

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