Back to results
US 12,680,467 B2Granted
Variable capacity turbocharger
OwnerTakao Asakawainventor
Life of this patent
Estimating the term…
Abstract
An example turbocharger includes a turbine blade wheel, a housing including a flow path through which gas received from an inlet flows, and a variable capacity assembly disposed in the housing and configured to receive the gas from the flow path and guide the gas to the turbine blade wheel. The housing includes a housing contact surface that is in contact with the variable capacity assembly in an axial direction of a rotation axis of the turbine blade wheel. The variable capacity assembly includes an assembly contact surface that is in contact with the housing contact surface in the axial direction. At least one of the housing contact surface and the assembly contact surface includes a high friction surface.
Claims18
A turbocharger comprising:
- a turbine blade wheel;
- a rotating shaft to which the turbine blade wheel is fixed;
- a first housing including a flow path through which gas received from an inlet flows;
- a second housing rotatably supporting the rotating shaft;
- a variable capacity assembly disposed in the first housing and configured to receive the gas from the flow path and to guide the gas to the turbine blade wheel;
- an annular intermediate plate contacting the variable capacity assembly in an axial direction of the rotating shaft;
- and
- a biasing member located between the intermediate plate and the second housing, the biasing member configured to apply a biasing force to the intermediate plate so as to press the intermediate plate against the variable capacity assembly,
- wherein the first housing includes a housing contact surface that is in contact with the variable capacity assembly in the axial direction,
- wherein the variable capacity assembly includes an assembly contact surface that is in contact with the housing contact surface in the axial direction,
- wherein the intermediate plate includes:
- a first contact surface in contact with the variable capacity assembly in the axial direction;
- and
- a second contact surface that is located on a side opposite to the first contact surface in the axial direction, and in contact with the biasing member in the axial direction,
- wherein each of the first contact surface and the second contact surface includes a high friction surface, and
- wherein an entire surface of the first contact surface is the high friction surface.
13 more elements
A turbocharger comprising:
- a turbine blade wheel;
- a rotating shaft to which the turbine blade wheel is fixed;
- a housing including:
- a flow path through which gas received from an inlet flows;
- and
- a connection flow path through which a gas passes from the flow path into the turbine blade wheel;
- and
- a variable capacity assembly disposed in the housing and configured to receive the gas from the flow path and to guide the gas to the turbine blade wheel, the variable capacity assembly including:
- a nozzle vane located in the connection flow path;
- a nozzle ring rotatably supporting the nozzle vane;
- and
- a drive ring rotating the nozzle vane and contacting the nozzle ring,
- wherein the housing includes a housing contact surface in contact with the variable capacity assembly in an axial direction of the rotating shaft,
- wherein the nozzle ring includes:
- a nozzle ring contact surface in contact with the housing contact surface and located between the housing contact surface and the drive ring in the axial direction;
- and
- an outer peripheral surface that faces an inner peripheral surface of the housing and that is separated from the inner peripheral surface of the housing in a radial direction of the rotating shaft,
- wherein an entire surface of the nozzle ring contact surface has a high friction surface, and
- wherein a surface roughness of the high friction surface is greater than a surface roughness of the outer peripheral surface of the nozzle ring.
16 more elements
A turbocharger comprising:
- a turbine blade wheel;
- a rotating shaft to which the turbine blade wheel is fixed;
- a housing including a connection flow path through which gas passes, wherein the gas flows from the connection flow path into the turbine blade wheel;
- a nozzle vane located in the connection flow path;
- a nozzle ring rotatably supporting the nozzle vane;
- a heat shielding plate located next to the nozzle ring in an axial direction of the rotating shaft;
- and
- a biasing member configured to apply a biasing force to the heat shielding plate so as to press the heat shielding plate against the nozzle ring,
- wherein the heat shielding plate includes:
- a first contact surface contacting the nozzle ring in the axial direction;
- and
- a second contact surface located on a side opposite to the first contact surface in the axial direction, and contacting the biasing member,
- wherein each of the first contact surface and the second contact surface includes a high friction surface, and
- wherein an entire surface of the first contact surface includes the high friction surface.
11 more elements
A turbocharger comprising:
- a turbine blade wheel;
- a rotating shaft to which the turbine blade wheel is fixed;
- a housing including a connection flow path through which gas passes, wherein the gas flows from the connection flow path into the turbine blade wheel;
- a nozzle vane located in the connection flow path;
- a nozzle ring rotatably supporting the nozzle vane;
- a heat shielding plate located next to the nozzle ring in an axial direction of the rotating shaft;
- and
- a biasing member configured to apply a biasing force to the heat shielding plate so as to press the heat shielding plate against the nozzle ring,
- wherein the heat shielding plate has a ring-shape and comprises:
- a first contact surface contacting the nozzle ring in the axial direction;
- a second contact surface located on a side opposite to the first contact surface in the axial direction, and contacting the biasing member;
- and
- an outer peripheral surface facing the housing,
- wherein each of the first contact surface and the second contact surface includes a high friction surface, and
- wherein the high friction surface has a ring shape along the outer peripheral surface of the heat shielding plate.
12 more elements
Dependencies are inferred from the claim text.