Patent ID: 8919326

Claim:
A fuel pump module, comprising: a flange assembly mounted to a fuel tank and having a fuel outlet port for supplying fuel to an internal combustion engine; a reservoir body assembly connected to the flange assembly at a location below the flange assembly, the reservoir body assembly including: a reservoir casing; a fuel pump installed in the reservoir casing and pumping the fuel into the reservoir casing and provided at a predetermined location with a fuel feeding port for feeding the pumped fuel; an in-tank filter including a fuel inlet part connected to the fuel feeding port of the fuel pump, a filtering sheet for filtering the fuel fed from the fuel pump, and a fuel discharging port connected to the fuel outlet port of the flange assembly by a connection hose and supplying the filtered fuel to the flange assembly; and a pump retainer for holding both the fuel pump and the in-tank filter and closing an upper end of the reservoir casing, wherein the in-tank filter comprises an upper casing having an open lower end and receiving the filtering sheet therein, with the fuel inlet part being formed on a predetermined position of an outer circumferential surface of the upper casing and being connected to the fuel feeding port of the fuel pump and with the fuel discharging port being formed on an upper end of the upper casing; and a lower casing closing the open lower end of the upper casing, wherein the fuel pump is directly connected to the in-tank filter, and the fuel inlet part protrudes from the predetermined position of the upper casing in such a way that the fuel feeding port of the fuel pump can be inserted upwards into the fuel inlet part, wherein the pump retainer is provided with a first seat and a second seat for seating the in-tank filter and the fuel pump therein, respectively, further comprising: a primary filter assembly provided at a location outside the fuel pump, the primary filter assembly comprising a primary filter for filtering primarily sucked fuel and a filter holding unit for holding the primary filter, wherein the second seat of the pump retainer is configured to surround an outer circumferential surface of the fuel pump, wherein the filter holding unit is tightened to the bottom of the second seat at a location below the fuel pump; wherein the in-tank filter is provided on the lower casing with a fuel return part for discharging the filtered fuel into the reservoir casing; and wherein in the in-tank filter, the filtering sheet is folded several times to form a folded cylindrical shape, and both the fuel discharging port and the fuel return part are concentric with a central axis of the in-tank filter so as to communicate with an interior of the cylindrical filtering sheet.