| 摘要 |
PURPOSE: A muffler device for a vehicle is provided to reduce emission noises of combustion gas and noxious gas without influencing the engine output. CONSTITUTION: A muffler device(100) comprises a housing(10) having an internal space; a gas inlet(20) communicated to the interior of the housing and which allows for introduction of burnt gas; a porous iron plate(30) connected to the gas inlet, which is constituted by a plurality of circular iron plates having different diameters, wherein each of the circular iron plates has a plurality of through holes; the first inlet metal mesh(40) disposed in the periphery of the porous iron plate, which allows for escape of the gas passed through the porous iron plate; the second inlet metal mesh(50) disposed in the periphery of the first inlet metal mesh, which allows for escape of the gas passed through the first inlet metal mesh; a plurality of rotating blades(60) arranged from the first and second inlet metal meshes along the direction opposite to the direction of the gas inlet, wherein each of the rotating blades has a bent portion for collision of the gas emitted from the first and second inlet metal meshes; the first outlet metal mesh(81) disposed from the rotating blade along the direction opposite to the direction of the gas inlet; the second outlet metal mesh(82) having a diameter smaller than the diameter of the first outlet metal mesh, which allows for escape of the gas passed through the first outlet metal mesh; the third outlet metal mesh(83) having a diameter smaller than the diameter of the second outlet metal mesh, which allows for escape of the gas passed through the second outlet metal mesh; and a gas outlet(90) disposed in the side opposite to the gas inlet of the housing in such a manner that the gas passed through the third outlet metal mesh is discharged through the gas outlet.
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