Fuel pump

Details Fuel pump Fuel pump

1993-01-21

1994-08-09

Look, Edward K.

Rotary kinetic fluid motors or pumps

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

Turbine regenerative pump

415 552, 415 556, F04D 2940, F04D 500

Patent

active

053360451

ABSTRACT:
A fuel pump includes a flow channel formed substantially along an outer periphery of an impeller. Fuel is sucked from a suction port opened to an inlet portion so as to flow from an introduction groove to a pressurizing groove. The introduction groove is formed so that a sectional lateral length of the groove gradually becomes smaller from the inlet portion toward the pressurizing groove. Further, bottom portions at the deepest portion of the introduction groove are formed to extend gradually outwardly from the suction port opened to the inlet portion. The bottom portions of the introduction groove are so formed that the depth of the introduction groove gradually becomes smaller from the suction port. With such structure, the fuel sucked from the suction port can flow smoothly so that the occurrence of the fuel vapor is restrained and the flow rate reduction of the fuel at a high temperature is prevented.

REFERENCES:
patent: 2282569 (1942-05-01), Fabig
patent: 4493620 (1985-01-01), Takei et al.
patent: 4591311 (1986-05-01), Matsuda et al.
patent: 4793766 (1988-12-01), Kumata

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