The fuel filler neck device is attached to a filler pipe and is opened and closed by a fueling nozzle. The device has a cover member which has an introduction opening for the fueling nozzle and which is engaged with the filler pipe side with engagement parts formed on the filler pipe side being fitted in window holes. Insertion parts are respectively formed adjacent to the engagement parts in the circumferential direction of the filler pipe. The engagement parts can be each disengaged by deforming or breaking the cover member side by inserting a portion of a tool into the insertion part.

A fuel supply device (FS) includes a filler neck (10) that includes a nozzle guiding path that guides a fuel supply nozzle (FN), and a fuel passage that is continuous to the nozzle guiding path on a downstream side of the fuel passage, through which fuel that has been discharged from the fuel supply nozzle (FN) passes; a fuel vapor port (23) located outside of the filler neck (10) that has a through hole (23H) that communicates with the fuel passage (11Pd); and a vapor introduction body (70) that guides the fuel vapor from the fuel vapor port to the fuel passage (11Pd). The vapor introduction body (70) includes a within-through-hole support (71) that is inserted into and held in the through hole (23H), and includes a vapor passage (71a) along the through hole (23H), and a changing member (72) that faces an opening of the vapor passage (71a) on a side of the fuel passage (11Pd), and is configured to change a direction of flow of the fuel vapor that passes through the vapor passage (71a) to the side of the fuel passage (71a). The vicinity of the fuel vapor port in the filler neck is configured compactly.

Provided is a component used in a fuel feed apparatus (500), containing: a conductive polyamide layer (25) formed of a conductive polyamide resin composition, in which the conductive polyamide resin composition contains: a polyamide resin, a conductive carbon black, an ethylene--olefin copolymer, and a conductive polyethylene resin, and satisfies the following characteristics (a) and (b): (a) initial volume resistivity of a flat plate obtained by injection forming is 110.sup.5 .Math.cm or less, and volume resistivity after exposing the flat plate to CM15 fuel for 168 hours is 110.sup.7 .Math.cm or less, and (b) charpy impact strength at 40 C. of a test piece obtained by injection forming is 2.0 KJ/m.sup.2 or greater.

An inlet check valve intended to be entirely located within an internal volume delimited by a liquid tank of a vehicle and a filler pipe welded to the tank, the filler pipe defining a downstream direction followed by a liquid filling the tank, and an upstream direction opposite thereto the inlet check valve comprising a tube and, at the upstream end of the tube, resilient means for adapting the form of the tube to the internal wall of the filler pipe. The inlet check valve comprises hook means for securing the tube to an internal wall of the filler pipe and prevent the inlet check valve from moving within the filler pipe. The tube bears a skirt ending with an edge which can merge with the filler pipe wall when the latter is welded to the tank, making the edge a seal part of the inlet check valve.

A fuel tank includes a tank panel in which a storage space of a fuel is formed, a tank inlet fixed to the tank panel, and a tank cap that allows the tank inlet to be opened and closed. The tank inlet includes a bottomed cylindrical inlet plate to which the tank cap is attached, an inlet pipe that protrudes from a bottom wall of the inlet plate into the storage space, and a separator configured to separate the fuel entering from the storage space into a liquid component and a gas component. The separator is supported by the bottom wall of the inlet plate in the storage space, and the separator is disposed on an outer side of the inlet pipe and on an inner side relative to an outer edge of the inlet plate in a bottom view of the tank inlet.

One embodiment of a molded fuel tank includes a fuel tank molded from a synthetic material, such as a composite polymer. One embodiment may include molding a fuel tank with metal component fastening structures positioned within the fuel tank as it is molded. One embodiment may include molding a fuel tank and integral component fastening structures simultaneously from synthetic materials. One embodiment of a molded fuel tank may include a fuel tank formed by a rotational molding process.

A four-wheel vehicle includes an engine at least a portion of which is located farther forward than a seat, a fuel tank located above the engine and forwardly of the seat, a fuel filler including a fuel filler neck and a filler cap, a breather channel connected to the fuel filler, and an outflow prevention valve in the breather channel to prevent outflow of liquid fuel. The outflow prevention valve is located higher in a side view of the vehicle body than both of a lower end of the fuel tank and an upper end of the engine.

A fuel tank apparatus for a motor vehicle that includes a fuel tank and a filling module configured for connection to the fuel tank. The filling module includes a fuel accumulator and a filler neck configured for fluidic connection to the fuel accumulator in such a way that permits filling to occur place via the filler neck exclusively into the fuel accumulator.

A tank filler neck for a motor vehicle, and a motor vehicle having such a tank filler neck. The tank filler neck includes a plastic tube, a filler head composed of metal to enclose the plastic tube at an end thereof, and a first seal composed of an elastomer arranged on the circumference between the plastic tube and the filler head; a first seal composed of an elastomer, and which is arranged circumferentially between the first tube and the filler head; and a first supporting ring arranged opposite to the first seal in relation to the first tube, wherein the first supporting ring has a wall thickness that is greater than a wall thickness of the filler head.

A capless filler neck closure for use with a vehicle fuel tank filler neck is disclosed. The capless filler neck closure includes an outer dust cover and an inner closure door each movable from a closed position to an opened position in response to insertion of a fuel nozzle into the capless filler neck closure for refueling of an associated vehicle fuel tank.