Abstract: A fuel filler tube assembly is provided and may include a filler tube having a tubular body defining an inlet larger than an outlet and a funnel insert having a first cylindrical section, a second cylindrical section, and a third cylindrical section disposed between the first cylindrical section and the second cylindrical section. The first cylindrical section may be received in the inlet of the filler tube with the inlet engaging the insert between the first cylindrical section and the third cylindrical section when the first cylindrical section is disposed within the inlet of the filler tube.

Abstract: A fuel filler assembly includes a filler tube including a tube inlet having a larger diameter than a tube outlet and a transition portion disposed between the tube inlet and the tube outlet. An insert is received by the tube inlet and includes an insert inlet and an insert outlet. The insert outlet is received by the tube inlet and includes a nozzle opening axially offset from a central axis of at least one of the tube inlet, the insert inlet, and the insert outlet. The nozzle opening positions a nozzle received by the nozzle opening to direct supplied fuel toward the transition portion of the filler tube.

Abstract: A filler neck assembly includes a funnel member having a tubular body defining a transition portion between an inlet opening and an outlet opening and a nozzle receptor disposed within the tubular body. The nozzle receptor positions a nozzle relative to the transition portion to create a suctioning effect that prevents fuel vapors from escaping into the atmosphere during fueling.

Abstract: A method of forming a gas tank filler neck includes configuring at least a portion of a seamless tubular member to induce a swirl to passing fuel for venting vapors from the gas tank during fuel filling. The configuration may include deep drawing a seamless funnel member, forming a relatively large inlet at one end thereof, and forming a relatively small outlet at the opposite end thereof, the inlet having an axis offset from the axis of the outlet. A filler neck includes a seamless funnel member defining a relatively large inlet opening and relatively small outlet opening, the position of the inlet opening relative the outlet opening inducing a swirl to the fuel being supplied.

Abstract: A fuel tank filler assembly includes a filler neck configured to receive a fuel supply nozzle. The filler neck includes a one-piece seamless funnel member having a tubular body configured to swirl supplied fuel and reduce vapor escape. The tubular body includes integrally formed threads for receiving a gas cap. The funnel member defines in off-set axial relation a relatively large inlet opening adapted for attachment to a receptor for the nozzle and a relatively small necked down outlet opening adapted for attachment to the inlet of a filler tube. The filler tube is in communication with the fuel tank. A method for manufacturing the fuel tank filler neck is also disclosed.

Abstract: A method of forming a filler tube includes forming a funnel insert, forming a funnel portion in a first end of a filler tube, and joining the funnel insert and the funnel portion of the filler tube. The funnel portion includes a transition portion configured to induce a swirl to passing fuel for venting vapors from the gas tank during fuel filling. A fuel filler tube assembly includes the funnel portion including a tubular body defining a larger inlet and a smaller outlet, the position of the inlet relative the outlet and an internal configuration of the tubular body therebetween inducing a swirl to inventing vapors from fuel flowing through the tubular body. The larger inlet receives a funnel insert including a nozzle opening positioned to cooperate with the internal configuration of the tubular body.

Abstract: A fuel tank filler neck is provided to reduce the escape of gasoline vapor from an automobile fuel tank system and is leak tight. The filler neck is configured to receive a fuel supply nozzle. The filler neck includes a one-piece seamless funnel member having a tubular body and an elongated tubular member. The funnel member defines in off-set axial relation a relatively large inlet opening adapted for attachment to a receptor for the nozzle and a relatively small necked down outlet opening adapted for attachment to the inlet of an elongated tubular member. The tubular member is adapted to be in communication with the fuel tank. A method for manufacturing the fuel tank filler neck is also disclosed.

Abstract: A fuel tank filler neck is provided to reduce the escape of gasoline vapor from an automobile fuel tank system and is leak tight. The filler neck is configured to receive a fuel supply nozzle. The filler neck includes a one-piece seamless funnel member having a tubular body and an elongated tubular member. The funnel member defines in off-set axial relation a relatively large inlet opening adapted for attachment to a receptor for the nozzle and a relatively small necked down outlet opening adapted for attachment to the inlet of an elongated tubular member. The tubular member is adapted to be in communication with the fuel tank. A method for manufacturing the fuel tank filler neck is also disclosed.