Abstract: An opening-closing device for a fuel supply passage includes a tubular passage forming portion having a fuel inlet port, a flap having an engagement portion, and an opening-closing actuating member. The opening-closing actuating member includes a main body and movable portions coupled to the main body. Each movable portion includes a proximal portion, an arm extending in the circumferential direction from the proximal portion, a nozzle detecting portion protruding inward in the radial direction from the arm, and an engaging portion. When the nozzle detecting portions do not receive a pushing force, the engaging portions are engaged with the engagement portion to lock the flap in a closing state in which the flap closes the fuel inlet port. When the nozzle detecting portions receive the pushing force, the engaging portions are disengaged outward in the radial direction from the engagement portion to unlock the flap.

Abstract: A fill limit vent valve includes a float valve, a housing, and a lid. The housing includes a cylindrical outer wall and a tubular portion. The outer wall has a central axis. The tubular portion accommodates the float valve. The lid is placed on the upper end of the tubular portion and has a communicating opening. The housing includes a fuel passage that has an inlet and a discharge port. The discharge port is connected to the communicating opening. A section of the tubular portion that faces the fuel passage is constituted by a curved surface. A guide wall that has at least one guide surface is provided between the fuel passage and the inlet. A straight line on the curved surface that is parallel with the central axis is defined as a generatrix. The guide surface extends along the curved surface while being inclined relative to the generatrix.

Abstract: A fuel shut-off valve includes a housing, a float valve, and a tubular fuel inflow portion. The housing includes a communicating opening that communicates with the outside of the fuel tank, a tubular portion that extends in a vertical direction, and an inlet for liquid fuel located in the tubular portion at a position below the communicating opening. The float valve selectively closes and opens the communicating opening by moving vertically. The fuel inflow portion is provided outside the tubular portion and has a first end having an inflow port for liquid fuel and a second end connected to the inlet. The inflow port is opened at a position that is above the inlet and spaced outward in a radial direction from the tubular portion. The housing includes a discharge port for discharging liquid fuel in the housing.

Abstract: 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.