VARIABLE DISPLACEMENT TURBINE

摘要

A variable displacement radial turbine comprising a plurality of movable nozzle blades (19) rotatably provided between opposed two side wall surfaces (14,15) around an outer periphery of a turbine blade wheel (7) by shaft bodies (20), respectively, and a clearance setting support pin (124,124') extending across between the two side wall surfaces (14,15)in order to maintain a distance between the two side wall surfaces (14,15) at an appropriate value. The support pin (124,124') is disposed at a position closer to a leading edge (19a) of one of the movable nozzle blades (19) than a position of the shaft body (20) of said movable nozzle blade (19) on the side of a pressure surface (19c) of said movable nozzle blade (19) without contacting said movable nozzle blade (19) when it is located at a maximum opening position (A).