Patent ID: 9702264
Date: 2017-07-11
CPC Classifications: F01D

Claim:
1. A variable nozzle unit configured to adjust a passage area for an exhaust gas to be supplied to a turbine impeller in a variable geometry system turbocharger, comprising: a base ring arranged coaxial with the turbine impeller in a turbine housing in the variable geometry system turbocharger, and including a plurality of support holes penetratingly formed at intervals in a circumferential direction of the base ring; a plurality of variable nozzles arranged on the base ring at intervals, each variable nozzle being rotatable around its axis in parallel with an axis of the turbine impeller and being integrally provided with a nozzle shaft on a lateral surface thereof, the nozzle shaft being rotatably supported by the corresponding support hole in the base ring; and a link mechanism arranged on one side of the base ring and configured to synchronously rotate the plurality of variable nozzles in forward and reverse directions, wherein the link mechanism comprises: