An embodiment fuel cap system includes a filler neck connected to a fuel pipe, a fuel cap having a cylindrical shape and able to be coupled to the filler neck by rotation, a sliding rod extending from an upper surface of the fuel cap in a shaft direction at an inside of the fuel cap and rotatable together with the fuel cap, a plunger including an upper end slidably coupled to the sliding rod in the shaft direction and a lower end including a coupling rod, and an inner ring on the filler neck and including a catching groove having an interior circumference on which the coupling rod is selectively engaged, wherein a rotation of the fuel cap is prevented when the coupling rod is engaged on the catching groove and the rotation of the fuel cap is possible when the coupling rod is disengaged from the catching groove.

The fuel storage system includes a fuel tank fill assembly and a fuel tank. The fuel tank fill assembly is configured to conduct fuel to the fuel tank from a fuel-dispensing nozzle and may include corrosion-resistant components. The fuel tank stores the fuel for later use by an engine included in the vehicle.

The present disclosure relates to a fuel filler apparatus/charging port apparatus/hidden handle apparatus for a vehicle. The fuel filler apparatus/charging port apparatus has a fuel filler lid/charging port lid, and the hidden handle apparatus has a hidden door handle. The fuel filler apparatus/charging port apparatus/hidden handle apparatus includes actuation apparatus and actuation apparatus control unit. The actuation apparatus includes motor, where the motor has an open position, a closed position, and an intermediate position between the open position and the closed position, and the motor is configured to drive an actuation component to move between the open position and the closed position. The actuation apparatus control unit receives an opening signal and a closing signal from a body control module, the opening signal causes the actuation component to move to the open position, and the closing signal causes the actuation component to move to the closed position. The actuation apparatus control unit performs closed-loop control of the motor based on a proportional-integral-derivative control algorithm according to a temperature, a voltage, and a position of the motor, to precisely control the fuel filler lid apparatus/charging port lid apparatus/hidden handle apparatus to move between the open position and the closed position.

A vehicle assembly includes, among other things, a fuel inlet conduit configured to receive a fuel dispensing nozzle. The fuel inlet conduit opens to an inlet opening. A guard is configured to move back and forth between a blocking position that prevents insertion of the fuel dispensing nozzle through the inlet opening into the fuel inlet conduit, and an accessing position that permits insertion of the fuel dispensing nozzle through the inlet opening into the fuel inlet conduit.

Methods and systems are provided for indication of a degradation in an EVAP and/or fuel system. In one example, a method for indication of a presence or absence of a degradation in a refueling system may include vacuum pull-down and pressure bleed-up tests being carried out based on a state of submersion of a spud valve in liquid fuel in a fuel tank.

Disclosed is a fuel supply structure for a filler pipe including the hollow circular cylindrical part having the fuel filler port and the connection opening, the first flap mechanism which is disposed on a side of the fuel filler port of the hollow circular cylindrical part and opens the fuel filler port in response to press by a nozzle, the drain through hole for communication between the inside and the outside of the hollow circular cylindrical part, and the drain hole shutting valve for open and shutting the drain through hole. The drain hole shutting valve is provided with the opening/shutter mechanism including the valve member for shutting the drain through hole in response to an opening operation of the first shutter member.

A fuel filler structure of a fuel feeding pipe prevents efficiency of sucking volatile fuel from being decreased during refueling even if a drain hole is formed, and includes: a cylinder that includes an opening and a connecting port; a first flap mechanism that is arranged near the opening of the cylinder and opens the opening when a nozzle is inserted; a drain hole that is formed in the cylinder and communicates inside the cylinder with outside; and a drain hole switching valve that opens and closes the drain hole, wherein the drain hole switching valve has a closing mechanism including a valve body that is pressed by the nozzle when the nozzle is inserted through the opening, so that the drain hole is closed.

A fuel system component used to supply a fuel to a fuel tank or used to discharge the fuel from the fuel tank comprises a first resin layer; and a second resin layer formed in a similar color to that of the first resin layer and configured to include a welding portion that is welded to the first resin layer and an exposed portion that is not adjacent to or in contact with the first resin layer. A belt-like portion is formed on a first resin layer-side surface of the exposed portion to be parallel to a boundary between the welding portion and the exposed portion and is configured to include at least one of a concave and a convex extended intermittently or continuously.

Methods and systems are provided for an adaptor for a capless filler pipe of a fuel tank for leak detection testing of a vehicle. In one example, the system may include a threaded hollow shaft having a top end able to receive a nozzle of a leak detection machine, the hollow shaft inserted through a mouth of a filler pipe of a fuel tank, a gasket arranged on the hollow shaft, and an end cylinder having an elastic piece on the hollow shaft configured to create an airtight seal with the fuel mouth. In this way, the adaptor may restrict gas flow through a defined flow path through the adaptor, and not through any other flow paths during leak detection testing.

The invention relates to a filling system on a motor vehicle, having at least two storage tanks for liquid or gaseous operating materials, comprising a tank closure cover which closes an opening in the body of the motor vehicle and can be brought from a first position that closes the opening into a second position that releases the opening, wherein at least two filling openings of the storage tanks are arranged below the tank closure cover, which are concealed in the first position of the tank closure cover; a filler trough that forms an enclosure of the filling opening, wherein the filler trough closes the opening in the body of the motor vehicle on the vehicle side and is fixed to the body of the motor vehicle; and at least one filler head, wherein the filling openings are formed as a part of the filler head, the filler head defining at least two mouth-hole necks which are combined to form a common component and are integrally connected to each other, each mouth-hole neck forming a filling opening for another storage tank.