| 摘要 |
A muffler including a long outlet pipe 20 having an exhaust gas inlet pipe portion 21, a return pipe portion 22, an exhaust gas outlet pipe portion 23, and two turnaround pipes 24, 25 for connecting the three pipe portions 21, 22, 23 together in series. These pipe portions 21, 22, 23 are arranged in parallel with one another along a longitudinal direction of a shell 2, and in such a manner that longitudinal axes 21L, 22L, 23L of the pipe portions are positioned at respective vertices of a triangle.
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