| 摘要 |
PROBLEM TO BE SOLVED: To provide a resonator structure in an exhaust system for an internal combustion engine capable of reducing exhaust noise of a specific frequency without receiving restriction due to a resonance chamber space and allowing simple setting of the specific frequency of which noise is to be reduced and to improve durability and assemblability. SOLUTION: A resonance pipe consists of an outer tube 8 covering an outer circumference of an exhaust pipe in a resonance chamber 5R. The outer tube 8 is installed on the outer circumference of the exhaust pipe 6 by reducing diameter of one opening edge part, another opening edge part defines the resonance chamber 5R and is fixed to an inner plate 4 penetrating through the exhaust pipe 6. Communication holes 61, 81 are formed on circumference walls of the outer tube 8 and the exhaust pipe 6 enclosed by the outer tube 8 respectively. COPYRIGHT: (C)2005,JPO&NCIPI
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