An inter-flap space 36 between an outside flap 24 and an inside flap 44 of a filler pipe 16 is placed in communication with the inside of a fuel tank 14 using a communication pipe 62, and an open and close valve 64 is provided to the communication pipe 62. Further provided are a pressure reduction pump 82 that depressurizes the fuel tank 14, an internal tank pressure sensor 68 that detects an internal tank pressure of the fuel tank 14, and a controller that controls opening and closing of the open and close valve 64 and driving of the pressure reduction pump 82, and that determines an outside flap seal state of the outside flap 24 based on the internal tank pressure.

A refuelling coupling having a shut off valve for a refuelling system has an annular member equipped with a connector for a pressure refuelling nozzle. A main sleeve extends down from the annular member within the skirt. The sleeve has an annular valve seat and a circular cylindrical distal end section. The seat has a conical face facing obliquely inwards and downwards. Below the valve seat, a plurality of peripherally arranged openings are provided in the end section. An end cap is screwed on across the very end of the lower portion, closing it with ports in the end cap. It also has an inner sleeve extending back up centrally to the level of the valve seat. The end cap is open inwards of the inner sleeve.

A fuel tank fill apparatus according to the present disclosure is adapted to conduct fuel toward the fuel tank of a vehicle. The fuel tank fill apparatus includes a fuel-tank filler neck for conducting fuel to the fuel tank and a capless closure assembly that couples to the fuel-tank filler neck in such a way so as to be removed for serviceability.

A fuel-tank filler apparatus includes a fuel-tank filler neck and a filler neck closure. A flapper door is provided to control access to a fuel-conducting passageway formed in the fuel-tank filler neck.

A device is provided to prevent the accidental introduction of an incorrect liquid into a tank, such as the introduction of gasoline into the fuel system of a diesel fuel container. The device discriminates between nozzle diameters, allowing entrance of nozzle diameters at or greater than a predetermined minimum diameter while inhibiting entrance of nozzles having diameters less than the predetermined minimum diameter. A closure mechanism prevents access to a fuel container interior and a releasable locking mechanism responsive to nozzle diameters allows the closure mechanism to open and close to allow access to the fuel container interior.

A fuel filling aperture opening and closing device includes a closing member turned to an open position to open a fuel filling aperture by an introduction of a fuel filling nozzle. The closing member is provided with a flap member having a ring-shaped seal member, and an urging device urging the flap member to be positioned at a closed position. The seal member is provided with seal portions respectively inside and outside, and one of the inner and outer seal portions is a plate-shaped portion pressed by the urging against a projection piece bordering an opening edge portion of a pass-through opening of the fuel filling nozzle, and the other of the inner and outer seal portions is formed by an inside circumferential projecting portion and an outside circumferential projecting portion respectively pressed against the flap member.

An operating medium tank arrangement for a motor vehicle includes an operating medium tank; a filling tube for refueling the operating medium tank, wherein the filling tube is fluidly connected on one side to the operating medium tank and on the other side has an insertion opening for receiving a refueling device; a guide insert arranged in the filling tube for guiding the refueling device; and a liquid separator including a separator chamber which is divided into a first sub-chamber and a second sub-chamber, wherein the first sub-chamber is fluidly connected to the operating medium tank via a ventilation line, wherein the second sub-chamber is fluidly connected to a filter device, wherein the separator chamber is fluidly connected to the filling tube for purging operating medium separated in the liquid separator into the filling tube, and wherein the first sub-chamber and the second sub-chamber are fluidly connected with each other via a labyrinth separator which is formed by the liquid separator and the filling tube.

Disclosed is an opening and closing device including a closing member which is turned to an opening position by inserting a fuel-filling nozzle to open a fuel-filling aperture. The closing member includes a pair of flap bodies and a biasing device which positions each of the flap bodies in a closing position by a biasing force. The pair of flap bodies each includes a turning assembly portion as the center of the turning and an abutment portion with respect to the other flap body and is each configured to press its front surface portion against a hole edge portion of a passage hole of the fuel-filling nozzle by the biasing force and presses the abutment portion against the abutment portion of the other flap body.

A fueling device comprises a resin passage-forming member configured to form a fuel path, a fuel path end member and a covering member. A resin sealing member constituting the fuel path end member is located on a filler port side of the fuel path and is welded to the passage-forming member about an axis of the fuel path to provide a seal against the passage-forming member by welding about the axis. The covering member is arranged to cover a welded part about the axis at which the sealing member is welded to the passage-forming member from outside of the fuel path with leaving a gap about the axis, which is formed between the welded part and the covering member and is divided into a plurality of sections. The covering member is protruded from an outer peripheral wall of the passage-forming member and is supported by the outer peripheral wall such as to form the gap. The covering member is linked with the outer peripheral wall of the passage-forming member by linkage sections formed between adjacent sections of the gap divided into the plurality of sections. This configuration suppresses deformation of a welded part between a pipe main body and an inner member by an external force.

The invention relates to a filling apparatus for a vehicle tank, comprising a filling head, through which a liquid to be filled into the vehicle tank can be filled and on the outer side of which a fastening flange is provided, wherein a fastening device is provided, by way of which the filling head can be fastened releasably to a filling pipe which is connected to the vehicle tank, the fastening device comprising a fastening ring which is formed from two ring halves, it being possible for the ring halves to be adjusted between an open position and a closed position, the ring halves holding the fastening flange of the filling head and a fastening flange of the filling pipe between them in the closed position, and the ring halves releasing the fastening flange of the filling head and the fastening flange of the filling pipe in the open position for releasing the filling head from the filling pipe.