Fuel supply module

Details Fuel supply module Fuel supply module

B - Operations, Transporting

60

K

B60K 15/06 (2006.01) B01D 35/027 (2006.01) F02M 37/10 (2006.01)

Patent

CA 2054733

A vehicle fuel pumping unit (10) wherein a reserve fuel supply container (27) is located within the fuel tank (12) to supply liquid fuel to a motor-operated pump (43) when the tank is nearly empty. The invention addresses the problem of pump starva- tion when the tank is nearly empty and the liquid fuel is held away from the pump intake passage due to abrupt sustained turning or other maneuvers of the vehicule. In preferred practice of the invention normal fuel flow from the tank to the pump is con- trolled by an annular float valve (40, 42) located directly below the reserve fuel supply container. Fuel flow from the reserve con- tainers is controlled by a pressure-responsive valve (54) located in the suction path between the container and the pump intake (46). The pressure-responsive valve is part of a sub-assembly including a liquid fuel filter screen (55) for filtering all fuel from the container and a valve seat (48) for the pressure-responsive valve.

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