CONSTANT FUEL-PUMP-INLET PRESSURE SYSTEM

摘要

A fuel filter assembly (16) for a fuel system for an internal combustion engine (10) which comprises a fuel filter housing (16) supporting a filter material (20) in a filter chamber (18) for disposition in a fuel line between a fuel tank (12) and an injector pump (14), and a fuel reservoir (22) disposed downstream from the filter chamber (18) for storing a volume of fuel. The assembly is characterized by an inlet valve (24) controlling fuel flow between the filter chamber (18) and the reservoir (22) for maintaining a predetermined volume of fuel in the reservoir (22) to provide a substantially constant fuel pressure to the injector pump (14). A float (26) is disposed in the reservoir (22) for opening the valve (24) in response to the fuel being below the predetermined volume and closing the valve (24) in response to the fuel being above the predetermined volume.