Patent ID: 7210547
Filing Date: 2007-05-01
Classification: B62K

Abstract:
1. A straddle-type vehicle comprising: a body frame including a pair of upper frames disposed substantially horizontally; a pair of front wheels; a pair of rear wheels; a steering gear including a steering shaft; an engine unit mounted between the front wheels and the rear wheels and below the upper frames and substantially below upper portions of the wheels, said engine unit including an engine body having a front portion overlapping with the front wheels in a side view, and a cylinder assembly, said cylinder assembly having an upper end surface disposed at a portion opposing to and in proximity to the steering shaft, the cylinder assembly including a cylinder head provided with an air-intake port communicating with a combustion chamber, the air-intake port being provided with a valve seat disposed to an opening of the combustion chamber; and an engine air-intake system including a throttle body connected to an upstream side of the air-intake port and an air cleaner connected to an upstream side of the throttle body via an air-intake pipe, said air-intake pipe extending from the throttle body linearly, substantially upward, along the steering shaft, and in a state connected to the air cleaner, a cylindrical clean section is formed in the air cleaner by a cleaner element on an extension of the air-intake pipe.