| 摘要 |
A marine propulsion device comprising an engine including an exhaust outlet, a lower unit including a high-speed exhaust outlet and a rotatably mounted propeller driven by the engine, a generally vertical conduit communicating with the high-speed exhaust outlet, a wall surrounding the conduit and defining a water jacket between the wall and the conduit, the water jacket including a lower portion filled with water, a forward portion, and an exhaust gas inlet located above the level of the water and communicating with the engine exhaust outlet, and an adaptor connecting the engine to the lower unit, the adaptor including a first passage communicating between the engine exhaust outlet and the conduit, a port located forwardly of the passage and communicating with the forward portion of the water jacket at a point above the level of the water in the water jacket, a low-speed exhaust cutlet located rearwardly of the first passage, and a second passage extending interiorly of the adaptor and communicating between the port and the low-speed exhaust outlet. |
