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Title:
VEHICLE
Document Type and Number:
Japanese Patent JP2010196545
Kind Code:
A
Abstract:

To provide a vehicle capable of achieving a good balance between enhancement of silencing effect against noises and engine performance in a case of the rotational speed of an engine ranging from a medium rotation speed zone to a high rotation speed zone.

The motorcycle 1 (vehicle) includes a silencer 18 connected to a connection pipe 16. The silencer 18 includes an outer cylinder portion 21, a front side pipe 23 connected to a connection pipe 16, and arranged inside the silencer 18, and having a release port 23d for releasing exhaust gas into the outer cylinder portion 21, a rear side pipe 25 having an introduction port 25a for introducing the exhaust gas released from the front side pipe 23, and arranged such that the release port 23d of the front side pipe 23 and at least a portion of the introduction port 25a are opposed to each other, and a resonator 26 provided between the rear side pipe 25 and the outer cylinder portion 21 in a region beyond a flowing route 51 of the exhaust gas from the front side pipe 23 within the outer cylinder portion 21 to the rear side pipe 25.


Inventors:
TERAJIMA YASUTO
YAMAMOTO TAKEHITO
Application Number:
JP2009040716A
Publication Date:
September 09, 2010
Filing Date:
February 24, 2009
Export Citation:
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Assignee:
YAMAHA MOTOR CO LTD
International Classes:
F01N1/02; B62M7/02; F01N1/04; F01N1/08; F01N13/08
Attorney, Agent or Firm:
Hirokazu Miyazono



 
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