Regenerative fuel pump

Details Regenerative fuel pump Regenerative fuel pump

1992-11-27

1993-11-02

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

4174234, 415 552, F04B 1700

Patent

active

052579166

ABSTRACT:
An electric-motor regenerative fuel pump that includes a housing with a fuel inlet and a fuel outlet, and an electric motor with a rotor responsive to application of electrical power for rotating within the housing. A pump mechanism includes an impeller coupled to the rotor for corotation therewith and having a periphery with a circumferential array of open impeller vanes. An arcuate pumping channel surrounds the impeller periphery, and is operatively coupled by inlet and outlet ports at opposed ends of the channel to the inlet and outlet in the pump housing. The pumping channel has a circumferential array of radially curved grooves axially opposed to the impeller periphery and extending radially inwardly from the impeller vanes. A circumferential rib extends radially into the pumping channel opposed to the impeller periphery, and has arcuate dimension within the channel that coincides with the dimension of the channel groove array.

REFERENCES:
patent: 4586877 (1986-05-01), Watanabe et al.
patent: 4784587 (1988-11-01), Takei et al.
patent: 4822258 (1989-04-01), Matsuda et al.
patent: 5160249 (1992-11-01), Iwai et al.

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