公开(公告)号：US5293744A

公开(公告)日：1994-03-15

申请号：US919429

申请日：1992-07-23

申请人： Toshiyuki Imagawa ,  Hirohide Sakuma ,  Eihi Nawata

发明人： Toshiyuki Imagawa ,  Hirohide Sakuma ,  Eihi Nawata

IPC分类号： F01N1/08 ,  F01N1/06 ,  F01N1/12 ,  F01N3/28 ,  F01N13/10 ,  F02B27/04 ,  F01N7/10

CPC分类号： F01N13/10 ,  F01N1/06 ,  F01N1/12 ,  F01N3/2882 ,  F01N3/2885 ,  F01N2260/06 ,  F01N2260/16 ,  Y02T10/22

摘要： An exhaust manifold muffler having an exhaust manifold portion 10 and a muffler portion 20 integral with the exhaust manifold portion 10. The exhaust manifold portion 10 includes a plurality of manifold pipes 11 having parallel downstream ends which are spaced from each other and are arranged in a row. Each manifold pipe is connected to a respective cylinder of an internal combustion engine such that exhaust presssure pulsations from the manifold pipes operate as reflected waves opposite in phase, so as to damp the pressure pulsations. The muffler portion 20 has a first muffler chamber 22 and a swirl pipe 29 installed in the first muffler chamber 22. The manifold pipes 11 extend tangentially into the first manifold chamber to produce a swirl in the first muffler chamber 22. Part of the swirl enters an upper inlet end of the swirl pipe. The swirl pipe 29 has a lower outlet end which is located between the downstream ends of the manifold pipes 11. When the recirculated exhaust gas flows out of the swirl pipe 29, it aspirates the exhaust gas from the manifold pipes 11. As a result, the flow resistance of the muffler is small.

摘要翻译： 具有排气歧管部分10和与排气歧管部分10成一体的消声器部分20的排气歧管消声器。排气歧管部分10包括多个歧管管11，它们具有彼此间隔开的平行的下游端， 行。 每个歧管管连接到内燃机的相应气缸，使得来自歧管管的排气压力脉动作为相位相反的反射波起作用，以便抑制压力脉动。 消音器部分20具有安装在第一消声器腔室22中的第一消音器腔室22和旋转管道29。歧管管道11相切地延伸到第一歧管腔室中以在第一消声器腔室22中产生涡流。涡流的一部分进入 涡流管的上入口端。 旋流管29具有位于歧管11的下游端之间的下出口端。当再循环废气从旋流管29流出时，其从歧管11吸出废气。结果， 消音器的流动阻力小。