| 摘要 |
A motorcycle exhaust system includes a catalytic converter ( 43 ) disposed within an exhaust passage ( 37 ) for discharging exhaust gas (G) from a multi-cylinder combustion engine (E) and operable to purify the exhaust gas (G). An upstream end of the catalytic converter ( 43 ) has different regions (S 1 and S 2 ) communicated with upstream exhaust passage portions ( 37 a and 37 a), respectively, and a downstream end of the catalytic converter ( 43 ) is communicated with downstream exhaust passage portions ( 37 b and 37 b) in a number equal to or smaller than the number of the upstream exhaust passage portions ( 37 a and 37 a). Also, the catalytic converter ( 43 ) has a partition wall ( 43 c) extending in a direction of flow of the exhaust gas (G) for allowing the exhaust gas (G) from the upstream exhaust passage portions ( 37 a and 37 a) to flow through the catalytic converter ( 43 ) without being mixed together.
|
