Fuel pump having regenerative section provided with vent housing

Details Fuel pump having regenerative section provided with vent housing Fuel pump having regenerative section provided with vent housing

1984-01-30

1985-09-03

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

With means for re-entry of working fluid to blade set

Cross flow runner

415168, F04D 500

Patent

active

045389586

ABSTRACT:
A fuel pump comprises a regenerative pump section, a driving section and a housing, the regenerative pump section being provided with a vapor vent for discharging fuel vapor. The vapor vent communicates with an outside of the fuel pump through a vent housing for a vortex flow. The vent housing has a vent chamber, a tangential groove and a discharge hole. A vortex flow of the fuel including the fuel vapor generates in the vent chamber and flows from the tangential groove to the discharge hole. When the fuel vapor does not generate, the vortex phenomenon is enhanced so that an amount of the fuel discharged from the discharge hole is reduced. The vent housing may have a radial control groove communicating with a control hole in addition to the tangential groove.

REFERENCES:
patent: 2815717 (1957-12-01), Szwargulski et al.
patent: 3418991 (1968-12-01), Shultz et al.
patent: 3881839 (1975-05-01), MacManus
patent: 4408952 (1983-10-01), Schweinfurter

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