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    • 10. 发明申请
    • Internal combustion engine silencer
    • 内燃机消声器
    • US20050224283A1
    • 2005-10-13
    • US10505110
    • 2003-02-19
    • Masayuki YokoiFumihiko Mizuno
    • Masayuki YokoiFumihiko Mizuno
    • F01N1/06F01N1/00F01N1/08
    • F01N1/089F01N1/06F01N1/084F01N1/10F01N3/00F01N13/1872F01N13/1888F01N2260/10F01N2470/02F01N2470/04F01N2470/10F01N2470/18F01N2470/20
    • A muffler for internal combustion engines, in order to achieve a high attenuating effect without reducing the attenuating effect in the high revolution range of the engine, comprising one or more expanding chambers 11 through 13 formed in a muffler 1, an inlet pipe 5 which opens into a expanding chamber 11 and introduces exhaust gas into the muffler 1, and an outlet pipe 6 which opens into other expanding chamber 13 and introduces exhaust gas out of the muffler 1. In the muffler, the exhaust gas discharged through an aperture 5a of this inlet pipe 5 is inverted once or more times in the muffler 1 and is introduced into an aperture 6a of the outlet pipe 6. In a contraflow area L2 in which the flowing direction C of exhaust gas flowing in the expanding chambers 11 through 13 and the flowing direction E of exhaust gas flowing in the outlet pipe 6 are not the same, interference holes 7 composing of a plurality of small holes communicating with the expanding chambers 11 through 13 are bored in the outlet pipe 6. The aperture area of the small holes 7 is kept at not less than 1% but not more than 5% of the surface area of the outlet pipe in the contraflow area L2.
    • 用于内燃机的消音器,以便在不降低发动机的高转速范围内的衰减效果的情况下实现高衰减效果,包括形成在消音器1中的一个或多个扩张室11至13,打开的入口管5 进入膨胀室11并将废气引入消声器1,以及通向另外的膨胀室13的排出管6,并将废气引入消声器1。 在消声器中,通过该入口管5的孔5a排出的废气在消声器1中反转一次或多次,并被引入到出口管6的孔6a中。 在膨胀室11〜13中流动的废气的流动方向C和在出口管6中流动的废气的流动方向E不相同的反流区域L 2中,形成由多个 与扩张室11至13连通的小孔在出口管6中钻孔。 小孔7的开口面积保持在反流区域L 2中的出口管的表面积的1%以上且5%以下。