| 摘要 |
An exhaust gas control device is provided in an internal combustion engine. In the device, a valve which comprises a valve head and a valve stem is provided in a body the axis of which is inclined at 45 degrees with respect to a horizontal exhaust pipe. The valve is moved up and down in the body by compressed air and a coil spring. When the valve is engaged on a valve seat in the exhaust pipe, the exhaust pipe is closed, so that exhaust gas flows through a by-pass pipe. When the exhaust pipe is opened, exhaust gas flows through the exhaust pipe, thereby improving engine performance.
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