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1. 发明授权

US5025890A Engine exhaust apparatus 失效
标题翻译：发动机排气装置
公开(公告)号：US5025890A
公开(公告)日：1991-06-25
申请号：US483230
申请日：1990-02-23
申请人： Nobuyasu Hisashige , Fukuichi Yokogawa , Makoto Shinhama
发明人： Nobuyasu Hisashige , Fukuichi Yokogawa , Makoto Shinhama
IPC分类号： F01N1/04 , F01N1/02 , F01N1/08 , F01N1/10
CPC分类号： F01N1/084 , F01N1/02 , F01N1/10 , F01N2490/155
摘要： An engine exhaust including a silencer which has a cylindrical shell, a front and a rear end plate which are provided to close both ends of the cylindrical shell, and at least three partition walls to divide an inside space of the silencer into a plurality of chambers, i.e. at least a first chamber, a second chamber, a third chamber and a fourth chamber. An inlet pipe which bypasses at least the first and the second chambers, and connects the front end and the third chamber. The inlet pipe has a plurality of small holes which face toward the first and the second chambers. The small holes facing the second chamber are surrounded by a sound absorber. An outlet pipe bypasses at least the second, the third and the fourth chambers and connects the first chamber and the rear end plate. The outlet pipe has a plurality of small holes which face toward the third and the fourth chambers. The small holes facing the fourth chamber are surrounded by a sound absorber.
摘要翻译：一种包括消音器的发动机排气装置，其具有圆筒形外壳，设置成封闭所述圆筒形壳体的两端的前端板和后端板以及至少三个分隔壁，以将所述消声器的内部空间分成多个室，即至少第一室，第二室，第三室和第四室。入口管，其至少旁通第一和第二室，并连接前端和第三室。入口管具有面向第一和第二室的多个小孔。面对第二个室的小孔被吸声器包围。出口管至少旁通第二室，第三室和第四室，并连接第一室和后端板。出口管具有朝向第三室和第四室的多个小孔。面向第四室的小孔被吸声器包围。

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