Motor-driven fuel pump

Details Motor-driven fuel pump Motor-driven fuel pump

1988-04-28

1989-08-08

Croyle, Carlton R.

Pumps

Motor driven

Axial thrust balancing means for rotary pump and motor

4174231, 4174233, 41742312, 415 551, F04B 3900

Patent

active

048548308

ABSTRACT:
A motor-driven fuel pump including a motor section provided with a driving motor, and a pump section arranged below the motor section and provided with an impeller to be driven by the driving motor. A plurality of pressure compensation hollows are formed on opposite surfaces of a sealing portion of the impeller, and a plurality of communication holes are formed through the sealing portion for communicating the pressure compensation hollows. In another aspect, a plurality of pressure compensation passages are provided to be communicated to a higher pressure side of either a pump chamber defined around outer peripheral vanes of the impeller and a fuel well for receiving a fuel leaked along a sealing portion of the impeller.

REFERENCES:
patent: 2700343 (1955-01-01), Pezzillo, Jr.
patent: 4445821 (1984-05-01), Watanabe et al.
patent: 4449891 (1984-05-01), Kemmner
patent: 4451213 (1984-05-01), Takei et al.
patent: 4492515 (1985-01-01), Watanabe et al.
patent: 4556363 (1985-12-01), Watanabe et al.
patent: 4586877 (1986-05-01), Watanabe
patent: 4784587 (1988-11-01), Takei et al.

Affiliated with

Also associated with

Rating

Motor-driven fuel pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motor-driven fuel pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor-driven fuel pump will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-902537