Patent ID: 8550204

Claim:
An exhaust device of a vehicle provided with a V-engine having a front cylinder and a rear cylinder, comprising: a muffler arranged in a rear part of the vehicle; a front cylinder exhaust pipe connected to a front surface of the front cylinder; a rear cylinder exhaust pipe connected to a rear surface of the rear cylinder; a collecting pipe collecting the front cylinder exhaust pipe and the rear cylinder exhaust pipe; and a downstream exhaust pipe reaching from the collecting pipe to the muffler, wherein: a total length of the front cylinder exhaust pipe and a total length of the rear cylinder exhaust pipe are substantially the same; the collecting pipe is arranged on a side of a rear part of the engine in the lateral direction of the vehicle; the front cylinder exhaust pipe has a front exhaust pipe curved portion changing direction from forward to rearward; the front exhaust pipe curved portion is positioned in a vicinity of a front side of the engine; the rear cylinder exhaust pipe has, in order from an exhaust upstream side, a first rear exhaust pipe curved portion changing direction from rearward to forward, and a second rear exhaust pipe curved portion changing direction from forward to rearward; the first rear exhaust pipe curved portion is positioned in a vicinity of a rear side of the engine, and the second rear exhaust pipe curved portion is positioned at the side of the rear part of the crankcase of the engine, the front cylinder exhaust pipe has a front exhaust pipe straight portion that is formed in a straight line and is connected to the collecting pipe, the rear cylinder exhaust pipe has a rear exhaust pipe straight portion that is formed in a straight line and is connected to the collecting pipe, and the front exhaust pipe straight portion and the rear exhaust pipe straight portion respectively have a length of at least 100 mm.