A fuel filler adapter has a hollow body having a base end with a flange extending outwardly therefrom, and a forward end, and has a length of between 0.5 inch and 2.5 inches. A bore extends through the body at an angle of between 2.5° and 15° so that the adapter can be fitted onto a fuel nozzle. Fueling spitback is prevented by a helical fuel path which does not block air from venting from a fuel tank. Air venting from the fuel tank exits through the fuel filler adapter via one or more venting channels.

A method of producing a deflector device for a fuel tank system comprising producing a deflector device prototype from prefabricated components of a construction kit, performing fuel-refilling tests using the deflector device prototype, optionally modifying the deflector device prototype, creating a construction model for the deflector device prototype, producing a deflector device according to the construction model, optionally performing fuel-refilling tests with the deflector device produced according to the construction model and optionally producing the deflector device according to the construction model. The disclosure further provides a construction kit with prefabricated components for producing the prototype of the deflector device for the fuel tank system.

A refueling device that when mounted to a marine fuel tank facilitates refueling and minimizes the propensity for both spit-back and well back while simultaneously allowing a free flowing open pathway through which vapors generated by the refueling event may pass unencumbered.

A filler neck assembly including a main channel for supplying a liquid into a tank and an auxiliary channel for evacuating gas from the tank. The main channel includes a tubular main body including a first end receiving a filler spout and a second end discharging the liquid into the tank. The auxiliary channel includes a first section and a second section, the first section being a channel integrally molded with the tubular main body, and the second section being formed by a feature on an exterior of the main body cooperating with a separately formed part.

Some embodiments include a mobile fueling system. The mobile fueling system includes a fueling lid configured to cover a fueling compartment opening, and a recessed fueling compartment having the fueling compartment opening. The recessed fueling compartment includes one or more compartment walls having at least one recessed wall portion that is recessed a predetermined distance away from the fueling compartment opening, with the one or more compartment walls defining an interior compartment volume. The recessed fueling compartment further includes a fueling port configured to couple the recessed fueling compartment to a fuel storage tank, and a gas inlet in at least one of the one or more compartment walls of the recessed fueling compartment. The gas inlet is configured to introduce a gas into the interior compartment volume. Other embodiments of related systems and methods are also disclosed.

A drainage portion extending from one to the other of a bottom wall of a recess and a lid is provided at least above a hydrogen filling port in the recess when the lid is in a closed state. Therefore, water, which has entered the recess from a gap (parting) when the lid is in a closed state, reaches an upper surface of the drainage portion and flows along the upper surface of the drainage portion, and then, the water flows down from the drainage portion while avoiding the hydrogen filling port. Accordingly, it is possible to suppress the water having entered the recess while the lid is in a closed state from adhering to the hydrogen filling port.

An automatic opening and closing device for a fuel inlet of a vehicle may include a cap cover mounted at the fuel inlet of the vehicle, a fuel cap pivotably mounted at the cap cover and configured to selectively open or close the fuel inlet by being pivoted inside the fuel inlet, and a fuel cap operating mechanism mounted in the fuel inlet and configured, when the fuel door is closed, to pivot the fuel cap by being pressed by the fuel door to close the fuel inlet, and, when the fuel door is opened, pivot the fuel cap to open the fuel inlet according to release of pressing by the fuel door.

A funnel insert for a filler tube of a fuel tank for a motor vehicle, the funnel insert being arranged in an end region of the filler tube intended to receive a fuel nozzle, and there being a space between the outside of the funnel insert and the inside of the filler tube, in which space a fluid barrier is arranged. According to the invention, the fluid barrier is in the form of a sealing body arranged on the outer circumference of the funnel insert, which sealing body comprises a sealing lip resting on the inside of the filler tube in portions or circumferentially, and consists of a material having a higher flexibility than the material of the funnel insert.

An opening-closing device for a fuel supply passage includes a tubular passage forming portion having a fuel inlet port, a flap having an engagement portion, and an opening-closing actuating member. The opening-closing actuating member includes a main body and movable portions coupled to the main body. Each movable portion includes a proximal portion, an arm extending in the circumferential direction from the proximal portion, a nozzle detecting portion protruding inward in the radial direction from the arm, and an engaging portion. When the nozzle detecting portions do not receive a pushing force, the engaging portions are engaged with the engagement portion to lock the flap in a closing state in which the flap closes the fuel inlet port. When the nozzle detecting portions receive the pushing force, the engaging portions are disengaged outward in the radial direction from the engagement portion to unlock the flap.

A fueling device mounted on a vehicle, includes: a flow path forming member forming a flow path extending from a fueling port to a fuel tank of the vehicle; and a stay joined to a vehicle body, wherein the stay supports an outer end portion of the flow path forming member.