Fuel supply apparatus

A fuel supply apparatus, comprising:

• a filler neck body including an inner circumferential surface that forms a fuel passage which a supplied fuel passes through, and a fuel vapor port branched off from the fuel pas sage-forming structure;
• and
• a nozzle guide located inside of the filler neck body and formed in a tubular shape to introduce a fueling nozzle that is inserted into a main body opening of the filler neck body and that is provided to supply the fuel, in a longitudinal direction of the filler neck body from the main body opening of the filler neck body toward a fuel tank, wherein
• a vapor flow path is formed to be continuous with the fuel vapor port and introduce fuel vapor flowing into the fuel vapor port in the longitudinal direction of the filler neck body,
• two ribs protruded outward and lengths of the two ribs extend along the longitudinal direction of the filler neck body with the fuel vapor port placed therebetween and a vapor guide structure provided on an opposite side to the fuel vapor port and configured to connect with the two ribs are provided on an outer surface of the nozzle guide,
• the vapor flow path is formed by the two ribs, the vapor guide structure, part of the outer surface of the nozzle guide provided to connect the two ribs with the restriction portion, and part of an inner surface of the filler neck body and is configured to communicate with the fuel vapor port, and
• heights of the two ribs from the outer surface of the nozzle guide are equal to a distance from the outer surface of the nozzle guide to the inner surface of the filler neck.