Patent ID: 8387736

Claim:
In a motorcycle having a vehicle body frame, an engine operatively attached to the vehicle body frame, a seat disposed on the vehicle body frame, and a storage box disposed on the vehicle body frame below the seat, the improvement comprising a fuel supply apparatus comprising: a fuel tank provided behind the storage box and having a fuel pump disposed therein; an intake air routing structure and a fuel injector disposed in front of the storage box, where the fuel supply apparatus is configured and arranged to deliver fuel into the intake air routing structure via the fuel injector during operation of the motorcycle; and fuel supply piping interconnecting the fuel pump and the fuel injector and having a pressure regulator disposed in fluid communication therewith, wherein fuel from the fuel tank is pressure-fed to the fuel injector by the fuel pump via said fuel supply piping, fuel being supplied from the fuel pump to the pressure regulator via a fuel feed pipe of said fuel supply piping, fuel being supplied from the pressure regulator to the fuel injector via a fuel delivery pipe of said fuel supply piping, and excess fuel being returned from the pressure regulator to the fuel tank via a fuel return pipe, wherein the pressure regulator is disposed in front of the storage box; wherein the fuel feed pipe and the fuel return pipe are disposed on one side and another side of the storage box and are interconnected by the pressure regulator; and wherein the fuel feed pipe and the fuel return pipe cooperate to form a substantially U-shape; wherein a rear wheel of the motorcycle is attached to a rear end of a swing arm and supported by the vehicle body frame so as to be swingably movable up and down; and wherein a fuel filter, situated at a middle portion of the fuel feed pipe, is disposed within a swingable range of the rear wheel as viewed in a side view.