Fuel delivery with self-priming fuel pump

Details Fuel delivery with self-priming fuel pump Fuel delivery with self-priming fuel pump

1992-11-27

1993-11-23

Cross, E. Rollins

Internal-combustion engines

Charge forming device

Fuel flow regulation between the pump and the charge-forming...

417435, 137197, F02M 3302, F16K 2404, F04B 1700

Patent

active

052634590

ABSTRACT:
A fuel delivery system for internal combustion engines that includes a fuel pump module adapted to be disposed within a fuel tank, with a pump inlet disposed at a lower portion of the tank for drawing fuel therefrom and a pump outlet for delivering fuel under pressure to the engine. An air/vapor purge valve is operatively coupled to the pump outlet. The purge valve is constructed to be open when air and/or vapor is pumped by the fuel pump to purge such air and/or vapor to the surrounding tank, and to be responsive to presence of liquid fuel under pressure at the pump outlet to close the purge valve and prevent passage of liquid fuel therethrough to the surrounding tank.

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