Two-stage pump for handling hot fuel

Details Two-stage pump for handling hot fuel Two-stage pump for handling hot fuel

1991-02-04

1992-09-22

Bertsch, Richard A.

Pumps

Diverse pumps

Series

4174231, 4174239, 415 556, 415 557, F04B 2308

Patent

active

051492520

ABSTRACT:
A two-stage fuel pump for furnishing fuel to an internal combustion engine utilizes a side or lateral channel pump as a first stage pump to furnish liquid fuel to a second stage pump. A common armature drive shaft drives both pumps and central passages in the vicinity of the drive shaft receive vapor developed in the first stage pump and cause the vapor to exit the pump assembly. A conical baffle directs vapor free fuel to a periphery where it enters the inlet side of the second or main stage pump. A rotor in the first stage pump has central axial passages to facilitate the egress of vapor from the pump assembly.

REFERENCES:
patent: 4205947 (1980-06-01), Ruhl et al.
patent: 4336002 (1982-06-01), Rose et al.
patent: 4629399 (1986-12-01), Friebe
patent: 5039284 (1991-08-01), Talaski

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