Toyoda Gosei Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Atsushi Sekihara

Yoshinari Hiramatsu

Shinji Shimokawa

Hiroaki Kito

Satoshi Suzuki

Motoyasu Kito

Akihito Hirunagi

Toru Shirasaki

Hitoshi Uchida

Noboru Hosoe

Masashi Yamamoto

Masayuki Kajioka

A fuel supply apparatus comprises a filler neck body including a fuel passage-forming structure configured to form a fuel passage and a fuel vapor port branched off from the fuel passage-forming structure; and a nozzle guide located inside of the filler neck body and formed in a tubular shape. A vapor flow path is formed to be continuous with the fuel vapor port and introduce fuel vapor flowing into the fuel vapor port in a tank direction. The configuration of the fuel supply apparatus enables the fuel vapor circulated from a fuel tank to the fuel supply apparatus to smoothly join with the flow of liquid fuel supplied from a fueling nozzle.

Fuel supply apparatus

A pipe holder for holding a pipe member at a vehicle body comprises a metallic member including a metallic clamp part that grasps and holds a portion of a fueling pipe to which a protection member is attached, and a metallic fixing part with a metallic engagement pawl part; and a resin clamp that, surrounds and holds the fueling pipe in a peripheral direction with the fueling pipe being grasped by the metallic member. The resin clamp comprises: a first resin member including a first clamp part; and a second resin member including a second clamp part facing the first clamp part and a resin fixing part with a resin engagement pawl part. The metallic engagement pawl part and the resin engagement pawl part are overlaid on each other to form an engagement unit. The engagement unit is engaged with an engagement opening of the vehicle body. When the engagement unit and the engagement opening are in engagement, a vertical lower end of a portion of the metallic engagement pawl part inserted into the engagement opening is located below a lower end of the engagement opening.

Pipe holder

The fuel supply device comprises a filler neck provided to include a fuel supply port which a fueling gun is inserted in and configured to form part of a fuel passage from the fuel supply port to a fuel tank, a fuel vapor pipe connected with the fuel tank and with a fuel vapor port and configured to supply a fuel vapor in the fuel tank to an internal passage of the filler neck main body, and a buffer member at least partly placed between a filler neck main body and the fuel vapor port in a neighborhood of a branch portion where the fuel vapor port is branched off from the filler neck main body. The filler neck comprises the filler neck main body including the internal passage and the fuel vapor port branched off from the filler neck main body.

Fuel supply device

A fuel supply apparatus comprises a filler neck body including a hollow fuel passage-forming structure configured to form a fuel passage and a fuel vapor port branched off from the fuel passage-forming structure; and a nozzle guide formed in a tubular shape to introduce a fueling nozzle. The nozzle guide includes a vapor flow path portion configured to introduce fuel vapor flowing into the fuel vapor port in a tank direction. The vapor flow path portion has a slow-down portion configured to slow down the fuel vapor introduced in the tank direction.

A movement permitting section is provided at a nozzle guideat an interior of an inlet pipe. When a stopperreceives pushing force toward a fuel tank side from a refueling nozzle, the movement permitting section deforms so as to permit movement of the stoppertoward a radial direction outer side of the nozzle guideor toward a fuel tank side.

Refueling portion structure

An object is to provide a fuel supply apparatus that is configured to cause fuel vapor generated by vaporization of a fuel circulated in a fuel tank to be smoothly joined with the supplied fuel. The fuel supply apparatus comprises a filler neck body that is configured to include a hollow fuel passage-forming portion arranged to define a fuel passage and a breather port; a nozzle guide that is placed inside of the fuel passage-forming portion and is configured to introduce a fueling nozzle; a guide portion that is configured to introduce an inflow gas flowing in from the breather port, to the fuel passage via an outer circumferential space; and a rib that is provided between the guide portion and a lower end in the first direction of the nozzle guide and is configured to divide the inflow gas introduced through the fuel passage.

A filler pipe is attached to a retainer that holds a fuel nozzle holder. The retainer includes: a first attaching portion attached to an inlet portion of the filler pipe; a holding portion having an engaging hole; and an opening positioned at a first end of the retainer, which is closer to a longitudinal center of the filler pipe than a second end is. The fuel nozzle holder includes: a second attaching portion and including an engaging piece that engages the engaging hole; and a main body extending from the second attaching portion toward the longitudinal center of the filler pipe. The engaging piece is surrounded at three sides by a groove having a U-shape. The engaging piece is connected to the second attaching portion on the main body-side. The holding portion extends toward the longitudinal center of the filler pipe to cover the groove.

Filler pipe and vehicle fuel filler port structure

An object is to provide a fuel supply apparatus that is configured to enhance the strength of a fitting portion of a filler neck body that is fit in a tube. The fuel supply apparatus (FS) comprises a filler neck body () that is configured to include a hollow fuel passage-forming portion () arranged to define a fuel passage (P) which a supplied fuel passes through, and a fitting portion () configured to be fit in a tube () arranged to introduce the supplied fuel to a fuel tank (FT); a nozzle guide () that is placed inside of the fuel passage-forming portion () and is configured to introduce a fueling nozzle (NZ) for supplying the fuel; and a first rib () that is provided at a position opposite to the fitting portion () to be placed between the filler neck body () and the nozzle guide () and to be in contact with an outer circumferential surface of the nozzle guide ().

A fuel supply apparatus for supplying fuel to a fuel tank includes a passage forming member that has a fuel passage connected to the fuel tank, an injection port forming member that is disposed in the fuel passage and fixed to the passage forming member, the injection port forming member having an injection port forming a part of the fuel passage, and an injection port open and close mechanism that is mounted to the injection port forming member and has an open and close member for opening and closing the injection port. A reinforcing member of the passage forming member and a welded portion of the passage forming member and the injection port forming member are arranged in the vicinity of a common plane perpendicular to a center line of the fuel passage.

A fueling device includes a fuel passage-forming member and a flap valve mechanism. The flap valve mechanism includes an opening-forming member attached to one end of the fuel passage-forming member and an opening-closing mechanism to open and close a filler inlet of the opening-forming member. The fuel passage-forming member includes a pipe body containing a resin inner layer in a pipe shape made of a first resin material and a resin outer made of a second resin material, and a welding end formed on an opening end of the pipe body. The opening-forming member includes a cover member that covers the opening end of the pipe body and a welded end formed on an opening end of the cover member and welded to the welding end. The cover member is made of a third resin material welded to either one of the first resin material and the second resin material.

Fueling device and manufacturing method of a fueling device

A filler neck is equipped with a neck main body having a pipe shaped resin inner layer and resin outer layer, and a retainer made of metal mounted so as to cover the edge part of the neck main body. The resin inner layer and the resin outer layer are made of resin materials for which one layer has superior fuel permeability resistance to the other layer. The resin inner layer has a screw part for screwing into a screw part of a fuel cap on the inner wall of the resin inner layer. The retainer has a seal part for sealing between the gasket, and a round cylinder shaped outer circumference protector part. The lower end of the outer circumference protector part is on plane perpendicular to the center axis of the fuel path. The plane includes the screw part.

Growing community of inventors

Kiyosu, Japan

Atsushi Sekihara