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 closing member includes a pair of flap members, and an urging device urging each flap member to be positioned at a closed position closing a near-side pass-through opening for a fuel filling nozzle. Each flap member includes a turning assembly portion which becomes a center of turning, and an abutment portion relative to the other of the flap members. A far-side pass-through opening for the fuel filling nozzle, and a guide slope face for the fuel filling nozzle, which is a slope face having an opening edge of the far-side pass-through opening as a slope lower end and a vicinity of the near-side pass-through opening as a slope upper end and formed on both sides of a directly underneath position including the directly underneath position of the abutment portion of the flap member located at the closed position, are formed on a far side of the closing member.

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.

A closure system including a filler neck, a guide socket arranged inside the filler neck, a closure cap to be introduced between the filler neck and the guide socket and which is fastenable to the filler neck and an annular seal to be received in an annular groove of the closure cap and which is secured to an inner face of the filler neck. The annular seal is arranged between the filler neck and the guide socket such that a nozzle placed between the filler neck and the guide socket does not reach thereto.

A filler neck for filling fuel into a vehicle tank includes a closure flap mounted for pivot between a closed position closing the filler neck and an open position releasing the filler neck and which is prestressed into the closed position by spring prestressing and is pivotable into the open position from the closed position by a fuel pump nozzle being hooked into a hooking-in position in the filler neck. A liquid outlet opening permits liquid accumulating in the filler neck when the closure flap is closed to drain out of the filler neck. A closure element is prestressed into an open position releasing the liquid outlet opening. The closure element is arranged and designed in such a manner that, by the fuel pump nozzle being hooked into the hooking-in position, the closure element is moved counter to the prestressing into a closure position closing the liquid outlet opening.

A closure of a tank of a motor vehicle for closing a filler neck gas- and fluid-tight, having a closure fastened to a flap, the flap being fastened to a vehicle body of the motor vehicle such that it is movable into an open or closed position, the closure including a seal, which causes the closure to close against the filler neck. The tank closure should be easy for a user to handle and have a relatively simple design and be economical to manufacture. This is achieved in that the seal is electromechanically or pneumatically adjustable with the aid of an actuator.

A fuel filler tube housing assembly constructed in accordance to one example of the present disclosure includes a fuel filler neck and a filler extension tube. The fuel filler neck housing includes a first mounting structure operable to support a check valve. The fuel filler extension tube is fixed to the fuel filler neck housing and has a second mounting structure substantially similar to the first mounting structure and thereby also operable to support the check valve.

A capless fuel system comprises a fuel inlet body, a flapper pivotably mounted within the fuel inlet body, a biasing member associated with the flapper, an axially movable shaft associated with the biasing member, and a tension calibrator associated with the biasing member, whereby tension on the controller spring may be adjusted by the calibrator. The biasing member may be of a variety of biasing elements but is preferably a controller spring. The shaft is reversibly movable from a tensioning position in which the electromechanical driver assembly is deactivated to a tension-lowering position in which the electromechanical driver assembly is activated. The capless fuel system includes a fuel pump nozzle position sensing system. The capless fuel system relies upon a single, multi-function flapper that functions as both the capless fuel system debris cover and a sealing member to prevent evaporative emission leaks.

The lid device for vehicle includes a link member which supports, by linking to a housing, a lid so as to open and close; and a basing member which can move the lid from a fully-closed position to a first reference position which is a partly-open position, by means of biasing force, and which can move the lid from a second reference position which is further in the open direction than the first reference position to a fully-open position, by means of biasing force. The link member includes a first link member and a second link member which are pivotally supported at one end on the rear side of the lid, and pivotally supported at the other end within the housing. The biasing member has a pop-up contact part for switching the lid from the closed position to the first reference position, and a deadlock contact part inner surface for switching between biasing towards the first reference position and biasing toward the fully opening position with the second reference position in between.

A fuel fill opening structure for a fuel tank includes a fuel filler pipe, a fuel fill opening, and a flow guide. The flow guide includes a main guide wall which partitions a fuel introduction region inside the fuel filler pipe into an upper space communicating with a tank main body side and a lower space communicating with the fuel fill opening side, and a partition wall provided to be continuous with the main guide wall and configured to close a space between an upper surface side of the main guide wall and an inner surface of the fuel filler pipe. The main guide wall includes a bent inclined part that is bent and inclined downward from a middle portion in running from the fuel fill opening side toward the tank main body side. The bent inclined part has a shape in which a width thereof becomes smaller when viewed from above as it inclines downward.