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    • 83. 发明专利
    • MUFFLER
    • JPS572412A
    • 1982-01-07
    • JP7609280
    • 1980-06-06
    • FUJI HEAVY IND LTD
    • KANASHIKI SUSUMU
    • F01N1/20F01N1/22
    • PURPOSE:To reduce the pulsation of gas flow and heighten the effect of silencing etc., by providing a film in an expansion chamber so that the film is vibrated by the pulsation. CONSTITUTION:The exhaust gas of an internal combustion engine or the like enters into an expansion chamber 15 through a pipe 19. The pulsating flow of the exhaust gas vibrates a film 14 which is provided in the expansion chamber 15 and has a small hole 20. As a result, the pulsation of the exhaust gas is damped. The exhaust gas is conducted to the outside through an exhaust port 18. Since the pulsation of the exhaust gas which flows through a muffler is damped, silencing is effectively caused. When such a pulsation damper is provided downstream to a carburetor in an intake pipe, the damper is useful to not only damp intake pulsation but also accelerate atomization.