| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust system silencing structure for a marine internal combustion engine, having high silencing effect at low cost.SOLUTION: In an exhaust system silencing structure for a marine internal combustion engine provided with engines 1A, 1B, the exhaust system silencing structure comprises: a controller 10 controlling rotation phases of the engines 1A, 1B; and a bypass passage 20 connecting exhaust pipes 2A, 2B of the engines 1A, 1B and having a length matching with a period of an exhaust pulsation frequency at a predetermined internal combustion engine rotation speed. |
