Motor driven fuel pump

Details Motor driven fuel pump Motor driven fuel pump

1983-02-28

1985-09-03

Croyle, Carlton R.

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

417369, F04B 1700, F04B 3906

Patent

active

045389683

ABSTRACT:
A communication aperture is formed in a wall of a pump chamber for allowing a part of pressurized fuel in the pump chamber to flow into a motor chamber, to thereby cool a motor armature, brushes, a commutator and so on. The aperture is formed inclined with respect to the direction of fuel flowing in the pump chamber. A dynamic pressure component as well as a static pressure component is applied to the inclined aperture with a result that a sufficient amount of fuel flows into the motor chamber even when a discharge pressure of a pump is decreased.

REFERENCES:
patent: 1619285 (1927-03-01), Burks
patent: 3180267 (1965-04-01), Bemmann et al.
patent: 3259072 (1966-07-01), Carpenter
patent: 3333544 (1967-08-01), Turk
patent: 4336002 (1982-06-01), Rose et al.

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