Abstract: The rotary device includes an impeller, a first housing, a second housing, an annular flow path positioned radially outside the impeller, a plurality of vanes arranged in the annular flow path, a ring plate positioned between the plurality of vanes and the second housing and supporting the plurality of vanes, the plurality of vanes being fixed to the ring plate, the ring plate including a positioning surface facing radially inward and contacting the second housing from a radially outer side, and an elastic body arranged between the ring plate and the second housing and pressing the ring plate and the plurality of vanes in the axial direction, the positioning surface being located radially inside the elastic body or being located at the same position as a radially inner end of the elastic body in a radial direction.

Abstract: A rotation device includes an impeller, a plurality of vanes that are arranged along a circumferential direction in an area radially outside the impeller and that protrude in an axial direction, a first wall surface that faces a protruding end of each of the plurality of vanes in the axial direction, and an inclined surface that is formed on at least one of the first wall surface and the protruding ends of the plurality of vanes and that is inclined with respect to a radial direction of the impeller.

Abstract: A variable capacity turbocharger includes: a turbine impeller; a turbine housing accommodating the turbine impeller; a nozzle flow passage located around the turbine impeller; a variable nozzle assembly having a nozzle vane located in the nozzle flow passage, and a drive mechanism configured to drive the nozzle vane; a bearing of the turbine impeller; a bearing housing accommodating the bearing; a biasing part configured to bias the variable nozzle assembly in an axial direction of the turbine impeller so as to be pressed against a part of the turbine housing; and a pin that extends from the bearing housing. The variable nozzle assembly includes a pin insertion part, which allows for insertion of a distal end of the pin. The distal end of the pin is inserted into the pin insertion part to restrict a rotational position of the variable nozzle assembly.

Abstract: A turbine includes a turbine wheel, a housing having a flow path for a gas, a variable geometry device to guide the gas from the flow path to the turbine wheel, and a biasing member. The variable geometry device includes one or more nozzle vane member, each having a nozzle vane, a nozzle shaft and a nozzle link plate. The biasing member is in contact with the nozzle link plate of the nozzle vane member.

Abstract: A turbine includes a turbine wheel, a housing having a flow path for a gas, a variable geometry device to guide the gas from the flow path to the turbine wheel, and a biasing member. The variable geometry device includes one or more nozzle vane member, each having a nozzle vane, a nozzle shaft and a nozzle link plate. The biasing member is in contact with the nozzle link plate of the nozzle vane member.

Abstract: Provided is a turbine including: a housing including: an accommodating space that accommodates a turbine impeller; a turbine scroll flow passage arranged on a radially outer side with respect to the turbine impeller; a communicating flow passage that allows communication between the turbine scroll flow passage and the accommodating space; and a discharge flow passage continuous with the accommodating space in a rotation axis direction of the turbine impeller; a vane member that includes a plurality of vane portions opposed to a first inner wall portion facing the communicating flow passage from a side opposite to the discharge flow passage, and is provided in the communicating flow passage; and an elastic member sandwiched by a second inner wall portion facing the communicating flow passage from the discharge flow passage side, and the vane member.

Abstract: A variable capacity turbocharger includes a turbine impeller, a gas inlet passage fluidly coupled to the turbine impeller, a nozzle vane located in the gas inlet passage, a drive assembly that rotates the nozzle vane, a drive chamber accommodating the drive assembly and including a region configured to store liquid in the drive chamber, and a liquid passage fluidly coupled with the drive chamber and configured to discharge the liquid from the drive chamber. A surface of the liquid passage has a greater surface roughness than the region of the drive chamber.

Abstract: A turbine includes a turbine wheel, a housing having a flow path for a gas, a variable geometry device to guide the gas from the flow path to the turbine wheel, and a biasing member. The variable geometry device includes one or more nozzle vane member, each having a nozzle vane, a nozzle shaft and a nozzle link plate. The biasing member is in contact with the nozzle link plate of the nozzle vane member, to urge the nozzle vane member against a contact surface of the turbine.

Abstract: A variable capacity turbocharger includes a turbine impeller, a gas inlet passage fluidly coupled to the turbine impeller, a nozzle vane located in the gas inlet passage, a drive assembly that rotates the nozzle vane, a drive chamber accommodating the drive assembly and including a region configured to store liquid in the drive chamber, and a liquid passage fluidly coupled with the drive chamber and configured to discharge the liquid from the drive chamber. A surface of the liquid passage has a greater surface roughness than the region of the drive chamber.