Patent ID: 11913373
Assignee: nan
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 10:
11. A variable capacity turbocharger comprising:
a housing;
a turbine impeller at least partially located in the housing;
a scroll flow path located in the housing and encircling the turbine impeller;
a first nozzle ring and a second nozzle ring facing each other in the housing;
a nozzle flow path located between the first nozzle ring and the second nozzle ring and fluidly coupling the scroll flow path to the turbine impeller;
a gap formed between the first nozzle ring and the housing, wherein the gap is located on an opposite side of the first nozzle ring to the nozzle flow path and is connected to the scroll flow path;
a bearing hole located in the first nozzle ring and including an opening adjacent to the gap; and
a nozzle vane located in the nozzle flow path,
wherein the bearing hole includes:
a second opening facing the nozzle flow path;
a large diameter portion into which a rotation shaft of the nozzle vane is inserted via the second opening; and
a small diameter portion including the opening adjacent to the gap and having a smaller diameter than the rotation shaft of the nozzle vane,
wherein a stepped diameter surface is formed between the large diameter portion and the small diameter portion, and
wherein a length of the rotation shaft in an axial direction of the bearing hole is less than a length of the large diameter portion in the axial direction.