Automotive fuel pump with a high efficiency vapor venting system

Details Automotive fuel pump with a high efficiency vapor venting system Automotive fuel pump with a high efficiency vapor venting system

1999-04-16

2000-09-12

Verdier, Christopher

Rotary kinetic fluid motors or pumps

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

Turbine regenerative pump

4151691, F04D 500

Patent

active

061168505

ABSTRACT:
An electric-operated fuel pump assembly (20) has a vaned impeller (36) that is disposed within a pump housing (28) for rotation about an axis (22). A channel (44; 72) extend arcuately about the axis. A vapor vent hole (46; 46A) intersects the channel. Certain geometric relationships improve venting efficiency, and hence pump efficiency.

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patent: 5580213 (1996-12-01), Woodward et al.
patent: 5662455 (1997-09-01), Iwata et al.
patent: 6010301 (2000-01-01), Oi et al.

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