| 摘要 |
<p>A waste gate valve device is configured so that the waste gate valve (100) is fully closed when the valve body of the waste gate valve (100) has been moved from the exhaust outlet path (18s) side to the exhaust bypass path (5) side and brought into contact with the seat surface (12a) of a valve seat section (12) formed around the exhaust bypass path (5). In order to reduce the area of the path for the exhaust gas, a protrusion (2) having a given height is formed on the side of the valve body (1) of the waste gate valve (100) which makes contact with the seat surface (12a).</p> |
