Divergent inlet for an automotive fuel pump

Pumps – Motor driven – Electric or magnetic motor

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Details

415 551, E04D 500

Patent

active

053642384

ABSTRACT:
A fuel pump has a pump cover with an inlet through which fuel from a fuel tank is drawn by an impeller to a pumping chamber formed by a pump bottom and the pump cover. The inlet has divergent sides oriented such that fuel being pumped is routed radially outward of primary vortices in a section of the pumping chamber adjacent the inlet to a section of the pumping chamber opposite the inlet. In a first embodiment, the upper side of the inlet is oriented at approximately a 10 to 12 degree angle from the lower side. In a second embodiment, the upper side is oriented at approximately a 127 degree angle from a line parallel the shaft rotation, and the lower side is oriented at approximately a 139 degree angle from the same line.

REFERENCES:
patent: 4403910 (1983-09-01), Watanabe et al.
patent: 4445821 (1984-05-01), Watanable et al.
patent: 4451213 (1984-05-01), Takei et al.
patent: 4556363 (1985-12-01), Watanabe et al.

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