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    • 31. 发明授权
    • Automobile exhaust noise silencer
    • 汽车排噪声消声器
    • US06173808B1
    • 2001-01-16
    • US08857071
    • 1997-05-15
    • Kazushige MaedaAkira SasakiTakao KubozukaHaruki Yashiro
    • Kazushige MaedaAkira SasakiTakao KubozukaHaruki Yashiro
    • F01N100
    • F01N1/084F01N1/02F01N1/166F01N1/24F01N2210/04F01N2490/155
    • An expansion chamber, and first and second volume chambers on either side of said expansion chamber, are formed inside a muffler housing. Engine exhaust is led by an inlet tube to the first volume chamber, and an opening facing the expansion chamber is formed in an intermediate part of the inlet tube. Exhaust in the second volume chamber is discharged outside by a tail tube, and an opening is formed facing the expansion chamber in an intermediate part of the tail tube. A valve is provided for leading exhaust from the first volume chamber to the second volume chamber according to a pressure difference between the chambers. This forms two exhaust flowpaths. A resonance system with two degrees of freedom is thereby formed with respect to exhaust discharged via the two openings and the expansion chamber, and a high noise silencing efficiency is obtained.
    • 膨胀室和位于所述膨胀室两侧的第一和第二容积室形成在消声器壳体的内部。 发动机排气通过入口管引导到第一容积室,并且面向膨胀室的开口形成在入口管的中间部分中。 第二容积室中的排气通过尾管排出到外部,并且在尾管的中间部分中形成面向膨胀室的开口。 提供阀,用于根据室之间的压力差将排气从第一容积室引导到第二容积室。 这形成两个排气流路。 因此,通过两个开口和膨胀室排出的排气形成具有两个自由度的共振系统,并获得高噪声消音效率。