FUEL SUPPLY MODULE

摘要

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 starvation 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 controlled by an annular float valve (40, 42) located directly below the reserve fuel supply container. Fuel flow from the reserve containers 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.