A filling device for an operating fluid tank, comprising a tubular outer part and an inner part which is received in the outer part and which is designed to receive an operating fluid nozzle, is characterized in that the inner part comprises a first end wall having an opening and a second end wall having an opening, the end walls being connected to one another via a shell and the shell being provided over the entire length between the end walls with a shell opening whose width corresponds substantially to the corresponding maximum inner width of the shell.

Systems are provided for refueling a fuel tank of a motor vehicle via an insert for a filler pipe. In one example, a system may include an insert coupled to an inner circumference of the filler pipe, the insert including a plurality of projections positioned on an inner circumference of the insert. The plurality of projections may include a first projection spanning a first axial length, a second projection spanning a second axial length, and a third projection spanning a third axial length.

Provided is a fuel fill opening structure which includes: a holder which forms a fuel supply passage; a main on-off valve which is arranged in the holder, and opens or closes the fuel supply passage; a drain opening which is drilled on an upstream side from the main on-off valve of the holder; a drain flap which is pivotably arranged at a position to come in contact with a fuel gun inserted into the holder; and a drain on-off valve which pivots along with pivot of the drain flap to open or close the drain opening. A first pivot amount of the drain flap, which is pivoted by being brought in contact with the fuel gun, is set to be larger than a second pivot amount of the drain on-off valve required to close the drain opening.

An exemplary charge port covering assembly includes, among other things, doors moveable between a covering position where the doors block access to a charge port, and an accessing position where the doors permit access to the charge port. A door release assembly includes a portion that tilts in response to movement of a charger toward an engaged position with the charge port to permit movement of the doors to the accessing position. An exemplary charge port covering method includes, among other things, blocking access to a charge port using a doors in a covering position, and tilting a portion of a door release assembly with a charger. The tilting permits a transitioning of the doors from the covering position to an accessing position where the charger can couple with the charge port.

Disclosed is an inlet end piece for the tank inlet of a motor vehicle, having a closure insert arranged in an upper area of a pipe inlet, having a filling opening and a sealing flap which counter to the force of a closure spring by way of a gas pump nozzle is capable of being opened by pivoting, and is held in the closed state by the closure spring. The inlet end piece has an indicator means having an indicator area, wherein the indicator means in the case of a closed sealing flap is located in an inactive position in which an indicator area of the indicator means is not visible to the user, and in the case of the sealing flap being at least partially opened, the indicator means is displaced into a signal position in which the indicator area becomes visible.

To prevent fuel from leaking to outside even when the fuel flows back at the time of an automatic stop operation during refueling. A fuel supply portion structure of a fuel supply pipe, including a tubular portion having a filler port and a connection port, a first flap mechanism which is provided on the filler port side of the tubular portion, a drain hole, and a drain hole on-off valve, wherein the drain hole on-off valve is disposed on a placement surface located at the lowermost side of a vehicle on an inner wall of a first inner diameter member, the placement surface is made of an inclined surface falling from the filler port side toward the connection port with respect to a horizontal plane of the vehicle, and a wall portion rising toward the filler port is provided on the filler port side of the inclined surface.

An opening-closing apparatus for a fuel tank comprises a fuel passage-forming portion configured to form a fuel passage that is arranged to introduce a supplied liquid fuel to the fuel tank; an insertion-side opening-closing mechanism configured to open and close the fuel passage; a tank-side opening-closing mechanism located on a fuel tank side of the insertion-side opening-closing mechanism and configured to open and close the fuel passage; a liquid discharge path configured to allow for communication of a portion of the fuel passage between the insertion-side opening-closing mechanism and the tank-side opening-closing mechanism to the outside of the opening-closing apparatus; and an open-close valve configured to open and close the liquid discharge path and to be opened toward the outside. This configuration of the opening-closing apparatus for the fuel tank reduces dust and the like invaded from the outside into the fuel passage which a liquid fuel passes through.

A refueling coupling has an annular fitting 101 having a bore 102, bayonet lugs 103 and slots 104 suiting it for connection to a pressure filling nozzle. A flange 122, drilled with screw holes for securement to a fuel tank (not shown), extends out from the fitting 101. Also not shown for the sake of clarity is a tube extending own from the flange. Rods extend down from the flange 122 to a spider 125, with springs bearing upwards onto the underside of a dry-break member 105, through which the rods extend. The rods, springs and spider are within the non-shown tube. On attaching and opening of a pressure filling nozzle to the coupling, the dry-break member 105 is displaced resiliently inwards fuel can flow past this member and into the tank. The dry-break member has a central aperture 111, normally closed by a plug 112, which is threaded externally 114 and carries an O-ring seal 115 above the thread. The central aperture has a plain bore orifice 116 and is threaded 117 below the plain bore. Thus, when the plug is screwed in, the dry-break member is fluid tight as normal.

Provided are a filler tube and a filler neck including the filler tube that may reliably prevent false injection of fuel even though structures thereof for suppressing the false injection of the fuel are simplified. A filler tube defining a path through which fuel from an injection nozzle is supplied to a fuel tank is provided. The filler tube includes: a main body having a hollow defined therein, into which the injection nozzle is inserted; a first rotating part disposed to penetrate one side wall of the main body and axially connected to the main body to be axially rotatable outwardly of the main body; and a second rotating part disposed to penetrate the other side wall of the main body to face away from the first rotating part and axially connected to the main body to be axially rotatable outwardly of the main body.

A fuel filling aperture 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 includes a pair of flap members, and urging devices urging the pair of flap members to be positioned at a closed position. Each of the pair of flap members includes a turning assembly portion which becomes a center of the turning, and an abutment portion relative to the other flap member. Also, a seal projecting piece abutting against an opening edge portion of a pass-through opening of the fuel filling nozzle at the closed position, and an edge projecting piece continuing to a terminal of the seal projecting piece, and forming at least one portion of the abutment portion, are formed on a surface portion of each of the pair of flap members.