A method for manufacturing a fuel tank is described herein. The method includes subsequent to molding of a housing of a fuel tank, positioning a strut inside the housing. The method additionally includes snap-fitting a flexible projection of the strut with a corresponding flange section in a first wall of the housing, the flange section surrounding an opening in the first wall of the housing and the flexible projection including a surface overlapping an interior surface of the flange section subsequent to the snap-fitting.

A cap holder (21) that is attached to the inner surface side of a fuel filling door (19) in a state of facing an inner surface of the fuel filling door (19) with an interval in order to hold a cap (11K) removed from a fuel tank (11) and a lock (22) that locks the fuel filling door (19) from the outside in a state where the fuel filling door (19) closes a fuel filling opening (18) are provided on the fuel filling door (19). The lock (22) has a lock lever (22C) that rotationally moves between a locking position where the fuel filing door (19) maintains a state of closing the fuel filling opening (18) and an unlocking position where the fuel filling door (19) allows opening of the fuel filling opening (18). This lock lever (22C) is configured by a long member a base end of which is rotatably attached to the fuel filling door (19) and a leading end of which is allowed to enter a gap between the fuel filling door (19) and the cap holder (21).

One aspect features a fuel cap holder, comprising: a receptacle having a threaded inner surface configured to receive a threaded end of a threaded fuel cap; and at least one mount configured to attach the fuel cap holder to an inner side of a vehicle fuel panel. The at least one mount may comprise at least one through hole configured to receive a screw. The at least one mount may comprise at least one groove configured to engage at least one protuberance of the inner side of the vehicle fuel panel. The at least one groove may comprise a vertical groove configured to engage a vertical protuberance of a hinge side of the inner side of the vehicle fuel panel. The at least one groove may comprise a horizontal groove configured to engage a horizontal protuberance of a bottom side of the inner side of the vehicle fuel panel.

A cap holder (21) that is attached to the inner surface side of a fuel filling door (19) in a state of facing an inner surface of the fuel filling door (19) with an interval in order to hold a cap (11K) removed from a fuel tank (11) and a lock (22) that locks the fuel filling door (19) from the outside in a state where the fuel filling door (19) closes a fuel filling opening (18) are provided on the fuel filling door (19). The lock (22) has a lock lever (22C) that rotationally moves between a locking position where the fuel filing door (19) maintains a state of closing the fuel filling opening (18) and an unlocking position where the fuel filling door (19) allows opening of the fuel filling opening (18). This lock lever (22C) is configured by a long member a base end of which is rotatably attached to the fuel filling door (19) and a leading end of which is allowed to enter a gap between the fuel filling door (19) and the cap holder (21).

A method for manufacturing a fuel tank is described herein. The method includes subsequent to molding of a housing of a fuel tank, positioning a strut inside the housing. The method additionally includes snap-fitting a flexible projection of the strut with a corresponding flange section in a first wall of the housing, the flange section surrounding an opening in the first wall of the housing and the flexible projection including a surface overlapping an interior surface of the flange section subsequent to the snap-fitting.

A closure device for closing a through opening on a vehicle is provided. An interior space with a filling or connection opening being accessible via the through opening, wherein the filling or connection opening is configured and provided for consumable filling on the vehicle, and it being possible for the through opening to be closed by way of a cover element which can be adjusted on the vehicle in a manner which is actuated by external force between at least one closure position for closing the through opening and an open position for opening the through opening. A control electronics system for triggering an adjustment of the cover element being provided with at least one first and second sensor device.

One aspect features a fuel cap holder, comprising: a receptacle having a threaded inner surface configured to receive a threaded end of a threaded fuel cap; and at least one mount configured to attach the fuel cap holder to an inner side of a vehicle fuel panel. The at least one mount may comprise at least one through hole configured to receive a screw. The at least one mount may comprise at least one groove configured to engage at least one protuberance of the inner side of the vehicle fuel panel. The at least one groove may comprise a vertical groove configured to engage a vertical protuberance of a hinge side of the inner side of the vehicle fuel panel. The at least one groove may comprise a horizontal groove configured to engage a horizontal protuberance of a bottom side of the inner side of the vehicle fuel panel.

A closure device for closing a through opening on a vehicle is provided. An interior space with a filling or connection opening being accessible via the through opening, wherein the filling or connection opening is configured and provided for consumable filling on the vehicle, and it being possible for the through opening to be closed by way of a cover element which can be adjusted on the vehicle in a manner which is actuated by external force between at least one closure position for closing the through opening and an open position for opening the through opening. A control electronics system for triggering an adjustment of the cover element being provided with at least one first and second sensor device.