| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the number of components of a muffler by achieving a reduction in thickness of the muffler for an engine in order to prevent the muffler from being largely protruded from the side surface of the engine. <P>SOLUTION: This muffler 27 includes a muffler case 43 composed of a first case body 41 and a second case body 42 butted to and fixed to the first case body 41. A first expansion chamber 47, a second expansion chamber 53 and a third expansion chamber 59 are formed in the muffler case 43 by recessed walls formed in the case bodies 41, 42. Throttle portions 56, 63 are formed between the expansion chambers by communication recessed walls formed in the case bodies 41, 42. An exhaust pipe 49 is mounted to the muffler case 43, and a discharge port 64 is formed in the lower end of the muffler case 43. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
