A shutoff vent is disclosed. A main body has a first end and a second end. The main body defines a first opening towards the first end, a second opening towards the second end, and a mating port between the first opening and the second opening. The first opening and the second opening are in communication through the mating port to define a gas passageway. A translatable plug is disposed within the main body, and the gas passageway extends past the translatable plug. The translatable plug is configured to reversibly translate towards the second end to sealably obstruct the mating port. In some examples, the translatable plug is configured to translate towards the second end when force is applied to the translatable plug from the first end.

A fuel supply device includes an inlet pipe, a first end of the inlet pipe configured to be connected to an oil supply port and a second end of the inlet pipe configured to be connected to a fuel tank and an air flow path, an upstream side end of the air flow path configured to be open to the outside and a downstream side end of the air flow path configured to be connected to the fuel tank. The air flow path includes a negative pressure valve configured to move a valve body to open a valve port when the pressure in the fuel tank becomes a negative pressure and an air filter disposed upstream of the negative pressure valve.

A fluid tank that includes a housing. The housing includes a bottom wall, a top wall, and a side wall. The side wall couples the bottom wall to the top wall to define a cavity that receives and houses a liquid. A conduit guides liquid from a fluid source into the cavity. The conduit defines an inlet and an outlet. The outlet couples to the side wall. A vent coupled to the housing and to the conduit. The vent defines a vent inlet coupled to the housing and a vent outlet coupled to the conduit. The vent discharges gas from the housing into the conduit.

An object is to enhance the assembly of a breather pipe which is accommodated in a filler pipe. A nozzle guide (10, 10a, 10b) that is arranged within a filler pipe (110) includes: a main body portion (20, 20b) that guides the insertion and removal of a refueling nozzle (150); and a connection member (50, 50a to 50c) that is provided on an outer circumferential surface (27) of the main body portion (20, 20b) and in which an upper end portion (51) of the connection member is located, in a tank direction (TD) extending from a refueling port (FC) toward a fuel tank (FT), on a downstream side with respect to a tip end portion (152) of the refueling nozzle (150), and the connection member (50, 50a to 50c) includes: a connection portion (52, 52a) connected to a breather pipe (120) that is arranged within the filler pipe (110); and a vapor flow path formation portion (55, 55b, 55c) that forms part of a vapor flow path (220) for the fuel vapor that flows in through the breather pipe (120) and the connection portion (52, 52a).

A fuel tank includes a tank main body and a fuel filler neck. A breather hole is provided in an inner surface of the fuel filler neck. A connecting pipe opens to the inside of the fuel filler neck though the breather hole and extends from the fuel filler neck in the radial direction. The inside of the fuel filler neck includes a first vapor-liquid separation chamber therein that is partitioned from the tank main body and connected to the breather hole. Liquid fuel entering the breather channel is reduced.

A fuel tank includes a tank main body configured to reserve a quantity of fuel therein and an oil feed tube fitted to the tank main body to form a fuel feed port. The fuel feed tube has a tip end configured to protrude inwardly of the tank main body, and the tip end is positioned below the upper limit level of the fuel. At a location of the fuel feed tube above the upper limit level, a vent hole is formed to communicate between the interior of the tank main body and the interior of the oil feed tube.

The present disclosure relates to a fuel tank comprising a filling tube opening via an inlet check valve into the fuel tank and comprising a venting device for discharging fuel vapors from the fuel tank. According to the present disclosure, the venting device has at least one venting line, which extends into the interior of the fuel tank and opens with an open end into a gas volume in the region of an upper wall part of the fuel tank, wherein the at least one venting line is guided such that it forms a siphon in the region of a lower wall part, and the inlet check valve has a bypass connection, to which the at least one venting line is connected.

An object is to enhance the assembly of a breather pipe which is accommodated in a filler pipe.

A nozzle guide (10, 10a, 10b) that is arranged within a filler pipe (110) includes: a main body portion (20, 20b) that guides the insertion and removal of a refueling nozzle (150); and a connection member (50, 50a to 50c) that is provided on an outer circumferential surface (27) of the main body portion (20, 20b) and in which an upper end portion (51) of the connection member is located, in a tank direction (TD) extending from a refueling port (FC) toward a fuel tank (FT), on a downstream side with respect to a tip end portion (152) of the refueling nozzle (150), and the connection member (50, 50a to 50c) includes: a connection portion (52, 52a) connected to a breather pipe (120) that is arranged within the filler pipe (110); and a vapor flow path formation portion (55, 55b, 55c) that forms part of a vapor flow path (220) for the fuel vapor that flows in through the breather pipe (120) and the connection portion (52, 52a).

A fuel supply device includes a valve body and a filter unit accommodating an air filter and a valve cap are attached to a tubular portion provided on a side surface of an inlet pipe. When a fuel tank has a negative pressure, the valve body opens and the negative pressure is eliminated by clean atmospheric air introduction. A projection portion is provided on the filter unit side of the valve body. Accordingly, attachment of the valve body into the tubular portion and attachment of the tubular portion and the filter unit are reliably performed, the reliability of valve body opening and closing is improved, and attachment workability is improved.

The invention relates to a filler head (23) for a storage system comprising a body with a main part (31) closed by a cover part, and being configured to receive a distribution nozzle of a fluid and configured to be connected, in a tighten manner, to a filling line and a venting line of a fluid tank, the filler head (23) further comprising a buffer volume (33) so as to reduce the speed of flow (V) coming from the venting line (21), the buffer volume (33) being in one-piece with the main part (31) and is closed by the cover part so as to limit fluid projection from the filler head (23) during refilling.