Patent ID: 8844666
Filing Date: 2014-09-30
Classification: B62J

Abstract:
1. A motorcycle comprising: a vehicle body frame including a head pipe configured to axially support a steering shaft, a main frame extending rearwardly and downwardly from the head pipe, and a down tube extending downwardly from the head pipe; an internal combustion engine supported by the vehicle body frame, including a crankcase, a cylinder, and a cylinder head, and a head cover, the cylinder extending upwardly from the crankcase; a fuel tank arranged on an upper side of the main frame; and an air-intake apparatus configured to supply air to the internal combustion engine, wherein an evaporable fuel storage container, configured to store evaporating fuel generated in the fuel tank of the motorcycle and supply the evaporating fuel to the air-intake apparatus when the internal combustion engine is in operation, is arranged in a space on a lower side of the fuel tank and on a front or on an upper side of the cylinder of the internal combustion engine on an upper rear of the down tube, wherein an air-exhaust pipe connected to a front portion of the cylinder head of the internal combustion engine extends forward and then is curved and extends rearwardly, a muffler is mounted on a rear end of the air-exhaust pipe; and the evaporable fuel storage container is arranged on an upper side of a curved portion of the air-exhaust pipe, and the motorcycle further comprising: a charge piping connecting the fuel tank and the evaporable fuel storage container and configured to feed the evaporating fuel from the fuel tank to the evaporable fuel storage container; a purge piping connecting the evaporable fuel storage container and the air-intake apparatus of the internal combustion engine, allowing the evaporating fuel stored in the evaporable fuel storage container to be sucked into the internal combustion engine by the intake air negative pressure and performing a fuel treatment; and a drain piping communicating the evaporable fuel storage container with the atmospheric air, wherein the evaporable fuel storage container is mounted with a longitudinal axis thereof oriented in the vehicle width direction, the charge piping and the purge piping are connected to one side thereof, and the drain piping is connected on the other side thereof, and at least part of the evaporable fuel storage container on the side of the drain piping is overlapped with the down tube in a front view.