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A fuel filler assembly (10) for a fuel tank (12) of a vehicle including a filler tube (14) for directing fuel to the tank (12) and a vent tube (15). The vent tube (15) is closed by a float valve (24) when the tank is filled to capacity and an equalizing port (27) is provided in the vent tube (15) to

A fuel filler assembly (10) for a fuel tank (12) of a vehicle including a filler tube (14) for directing fuel to the tank (12) and a vent tube (15). The vent tube (15) is closed by a float valve (24) when the tank is filled to capacity and an equalizing port (27) is provided in the vent tube (15) to balance the pressure between the upper portion of the filler neck and the vapor dome area of the tank. When pressure is relieved by removing the filler cap, relief valve (25) located above the float valve (24) and within the vapor dome of the fuel tank operates to allow pressure relief from the vapor dome of the fuel tank. A check valve (20) is provided in the filler tube (14) at the fuel tank (12). The check valve (20) in the filler tube (14) features a valve element (38) having cylindrical sides (39) and a hemispherical end (41) which is received in a housing (32) having cylindrical walls (34) and an annular seat (40) against which the hemispherical end (41) of the valve element (38) seals. The check valve (20) in the filler tube (14) is spring biased into a closed position with a force less than that required to automatically shutoff fuel dispensing.

대표청구항 ▼

A fuel filler assembly for receiving fuel from a dispensing nozzle and supplying the fuel to a fuel tank of a vehicle comprising: a fuel tank; a filler tube having an upper end and a lower end, a dispensing nozzle receptacle at said upper end, said lower end of said filler tube extending into the fu

A fuel filler assembly for receiving fuel from a dispensing nozzle and supplying the fuel to a fuel tank of a vehicle comprising: a fuel tank; a filler tube having an upper end and a lower end, a dispensing nozzle receptacle at said upper end, said lower end of said filler tube extending into the fuel tank; a filler cap adapted to seal the upper end of the filler tube; a vent tube having a first end extending into the fuel tank through a top surface of the fuel tank and a second end in communication with the upper end of said filler tube; a filler tube check valve mounted on the filler tube inside the fuel tank; a vent tube float valve assembly mounted on the first end of the vent tube which closes when the fuel tank is filled to capacity with fuel; means provided on the first end of the vent tube for equalizing pressure in a dome area within the fuel tank located between the top surface of the fuel tank and the fuel in the fuel tank relative to the pressure in said fuel dispensing nozzle receptacle when the vent tube float valve assembly is closed; and means provided on the first end of the vent tube for relieving pressure imbalance between the dome area within the fuel tank and atmospheric pressure when the cap is removed from the filler tube.