Unit for delivering fuel from a supply tank to the internal comb

Details Unit for delivering fuel from a supply tank to the internal comb Unit for delivering fuel from a supply tank to the internal comb

1994-10-05

1996-09-03

Freay, Charles

Pumps

Diverse pumps

Including rotary nonexpansible chamber type

417205, 4174233, 415 551, F04B 2314

Patent

active

055518427

ABSTRACT:
A device for delivering fuel from a storage tank to the engine of a motor vehicle, having a two-stage feed pump driven to rotate by an electric drive motor. The preliminary stage of the feed pump is embodied as a side channel pump whose partially ring-shaped supply conduit has in its pump course a cross sectionally reduced region, which is constituted by means of a reduction of the conduit depth and in which the fuel flowing through the supply conduit is maintained at a constant pressure level so that the length of the supply conduit effective for a pressure increase can be reduced to achieve a quick increase of delivery pressure.

REFERENCES:
patent: 5378125 (1995-01-01), Frank et al.
patent: 5393203 (1995-02-01), Hantle
patent: 5401143 (1995-03-01), Yu

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