In a variable nozzle structure for a turbine, moveable vanes for controlling variable cross section nozzles which lead to a turbine wheel are actuated by a drive unit which comprises an actuator for causing a linear motion to a rod member, a lever arm member which is pivotally supported by a part of the turbine casing and is connected to the rod member at its one end so as to be able to rotate about its pivot point with respect to a turbine casing when the rod member is driven linearly, a crank arm member which is integrally connected to a pin shaft whic...
A variable nozzle structure for a turbine comprising a turbine wheel, a turbine scroll passage defined in a turbine casing around the outer periphery of the turbine wheel, a plurality of fixed vanes arranged along the outer periphery of the turbine wheel, a plurality of moveable vanes arranged adjacent the fixed vanes so as to define a plurality of variable nozzles between the fixed vanes and the moveable vanes, and a drive means for driving the moveable vanes in mutual synchronization, wherein the drive means comprises: an actuator for causing a linear ...
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