| 摘要 |
In order to provide an exhaust pressure control valve that can exhaust gas using the entire cross-section area of an exhaust gas conduit when the exhaust pressure control valve is completely opened, an exhaust pressure control valve (9) is attached to a gas conduit (7) which has a first cross-section and through which exhaust gas from an engine flows, and the exhaust pressure control valve is disposed upstream of a muffler (4) or downstream from the muffler (4). The exhaust pressure control valve (9) is provided with: a housing (95A) that has a second cross-section having a larger surface area than the first cross-section, and that is connected to the gas conduit so that exhaust gas flows therethrough; a valve shaft (96) that is supported by the housing in a direction orthogonal to the flow direction at a position in the second cross-section which does not overlap the first cross-section when viewed from the flow direction; and a valve body (92) that is connected to the valve shaft and that regulates the flow rate of the exhaust gas flowing through the gas conduit. |
