Methods and systems are provided for a fuel system including a fuel filler pipe, an anti-siphoning device, and a fuel tank. In one example, a manufacturing method may include internally welding an anti-siphon device to a fuel filler pipe, applying a metal coating to the welded device and pipe including the internal welds, and externally welding the coated pipe including the device to a fuel tank. The metal coating to the filler pipe, the device and the internal welds may be applied by an electroless plating process but the electroless plating may not be applied to the external welds.

The mounting structure of a fuel device is for mounting the fuel device, which includes a plurality of components, on a baffle plate for suppressing waving of liquid fuel stored in a fuel tank. One of the components of the fuel device is integrally formed, as a mounting portion, with the baffle plate. The remaining components of the fuel device are mounted, as a mounted portion, on the mounting portion of the baffle plate.

The present disclosure is directed to a fuel tank with internal support structures and external reinforcements to minimize deformations due to pressure variations, such as may arise from diurnal temperature variations. Uncontrolled contraction of fuel tanks may result in undesirable reductions of tank volume, and uncontrolled expansion of fuel tanks may result in unwanted collision of fuel tanks with other vehicle components. The fuel tank of the present disclosure may find utility in applications where regular venting of fuel tanks is not practical, such as in hybrid vehicles.

The present disclosure is directed to a fuel tank with an internal support structure and external reinforcements to minimize deformations due to pressure variations, such as may arise from diurnal temperature variations. Uncontrolled contraction of fuel tanks may result in undesirable reductions of tank volume, and uncontrolled expansion of fuel tanks may result in unwanted collision of fuel tanks with other vehicle components. The fuel tank of the present disclosure may find utility in applications where regular venting of fuel tanks is not practical, such as in hybrid vehicles.

A ventilation nipple configured to ventilate a tank component that is composed of a plastic material, a tank device that includes such a ventilation nipple, and a method for producing such a tank device. The ventilation nipple includes a ventilation opening and a flange body arranged in an annular manner around the ventilation opening. The flange body has a first annular collar and a second annular collar each configured for connection via a weld connection to the tank component. The first annular collar and the second annular collar are arranged coaxially with respect to each other and also with respect to the ventilation opening. The first annular collar and the second annular collar define an annular hollow space configured to receive a sealing agent and/or an adhesive between the first annular collar and the second annular collar.

A method for installing filler tube includes the steps of: preparing a fuel tank including an opening; preparing an intervening member including a cylindrical member body and an annular member flange; preparing a filler tube including a cylindrical tube body and an annular tube flange; arranging the intervening member so that not only the member body is arranged in the interior of the fuel tank through the opening but also the member flange locks to a front-side peripheral face of the opening of the fuel tank; and welding not only the front-side peripheral with the tube flange but also the member flange with the tube flange by arranging a hot plate in a facing space between the front-side peripheral face and the tube flange and then warming the front-side peripheral face, the member flange and the tube flange.

The ventilation device (4) for a vehicle liquid tank, comprises: a membrane (20) impermeable to a predetermined liquid and permeable to a vapor likely to be produced by this liquid, and at least one pipe (52) suitable for discharging liquid found on the membrane from the device. The or each pipe has an end contiguous with the membrane, the rest of the or each pipe extending at an altitude lower than this end when a main axis of the device is vertical.

A filler tube for a fuel tank, having a tube portion made of plastic material and a tubular adapter, which is connected to the tube portion, for coupling the filler tube to the fuel tank, wherein a lateral surface of the adapter is integrally bonded, in particular welded, to a lateral surface of the tube portion, wherein the adapter and the tube portion overlap in the region of the integrally bonded connection.

The invention relates to a fuel container (1) of thermoplastic plastics material having an upper base (2) and a lower base (3) which are supported against each other by means of at least one column-like support element (4), wherein the support element (4) is connected in a positive-locking manner and/or materially engaging manner to a wall (6) of the upper base on the one hand and to a wall (6) of the lower base on the other hand in such a manner that it can absorb tensile forces and/or pressure forces, wherein the support element (4) is constructed in several pieces and the support element is divided longitudinally and comprises at least two segments (8) which complement each other in cross-section and which form a common support face at the end side.

An oil filler port of the capless oil feeder includes: an oil filler port main body made of a resin, a breather tube portion made of the resin, and a flap valve. The oil filler port main body has a tubular shape and includes a nozzle insertion port for inserting an oil filler nozzle at one end and a fuel feed port for supplying fuel to a filler tube at the other end. The breather tube portion is formed integrally on an outer side of a peripheral surface of the oil filler port main body and connected to a breather tube. The flap valve is foamed to be insertable from the fuel feed port, and is disposed inside the oil filler port main body to close the nozzle insertion port and is opened by insertion of the oil filler nozzle.