Exhaust turbine equipped with exhaust control valve

An exhaust gas turbine driven by exhaust gas emitted from an engine and being equipped with an exhaust gas control valve for closing and opening an exhaust gas bypass passage through which the exhaust gas emitted from the engine bypasses the exhaust gas turbine and flows into an exhaust waste gas outlet passage, the exhaust gas control valve comprising:

• a support axis shaft for supporting a valve body which controls an opening of the exhaust gas bypass passage, the support axis shaft being rotation-freely or swing-freely supported in a turbine casing of the exhaust gas turbine;
• an arm which is provided with a connecting part at an end part thereof for connecting the support axis shaft to an actuator, and rotates or swings the support axis shaft around an axis of the support axis shaft by reciprocating rotational movements or swing movements that are transferred from the actuator;
• and
• a weight equipped at an end part opposite to where the connecting part is provided, with respect to the axis of the support axis shaft,
• wherein a center of the valve body of the exhaust gas control valve is located at a predetermined distance apart from the connecting part via which running gears or moving parts of the exhaust gas control valve are operated, in the direction of the axis of the support axis shaft;
• and, the center of gravity of the weight in the direction of the axis is placed at a position between the connecting part and the valve body center.