Exhaust device for straddle-type vehicle and straddle-type vehicle
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United States of America Patent
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-
Aug 16, 2011
Grant Date -
Nov 5, 2009
app pub date -
Apr 28, 2009
filing date -
Apr 30, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An exhaust device for a straddle type vehicle allowing a compact design while still satisfying the sound deadening characteristic requirements is provided. The exhaust device for a straddle type vehicle comprising: an exhaust pipe that is connected to an engine; a silencer that is connected to the exhaust pipe wherein the exhaust pipe is provided with a Helmholtz resonator, and the Helmholtz resonator is filled with a sound absorbing material. The Helmholtz resonator is formed with an opening that communicates with the inside of the exhaust pipe. The opening is formed in a place where the sound pressure in the exhaust pipe is high during the operation of the engine.
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