Patent ID: 8210297

Claim:
A vehicle comprising: a vehicle body frame having a predetermined length and width and having a central axis defining a central plane; a pair of left and right front wheels supported on a front part of said vehicle body frame and a pair of left and right rear wheels supported on a rear part of said vehicle body frame; a seat supported on said vehicle body frame so as to be located between said pair of left and right front wheels and said pair of left and right rear wheels with respect to a front-back direction of the vehicle; a steering shaft which steers said pair of left and right front wheels; an engine unit supported on said vehicle body frame and arranged rearward of said steering shaft with respect to the front-back direction of the vehicle, said engine unit including a crankcase, a cylinder extending from said crankcase, and a transmission case which is provided to a side of said crankcase in a widthwise direction of the vehicle and houses a transmission; an air intake duct communicating air to said cylinder, said air intake duct including an air intake port receiving air from the ambient environment; said air intake duct positioned to one side of said steering shaft with respect to said central plane; a transmission air intake for communicating air from the ambient environment to said transmission case; and a transmission air exhaust duct which has an exhaust port exhausting air from inside said transmission case, said transmission air exhaust duct provided to one side of said steering shaft with respect to said central plane opposite said air intake duct.