Back to results
US 12,612,872 B2Granted
Turbocharger with nozzle ring positioning assembly
OwnerKenichi Segawa, Kengo Ikedainventors
Life of this patent
Estimating the term…
Abstract
A turbocharger includes a turbine impeller, a housing, a nozzle ring housed in the housing and located radially outside the turbine impeller, nozzle vanes supported by the nozzle ring, a first elastic member configured to bias the nozzle ring in an axial direction relative to the housing, a positioning assembly that includes a second elastic member configured to bias the nozzle ring so as to restrain the nozzle ring in a circumferential direction relative to the housing.
Claims20
A turbocharger comprising:
- a turbine impeller fixed to a shaft;
- a housing that houses the turbine impeller and the shaft and rotatably supports the shaft;
- a nozzle ring housed in the housing and located radially outside the turbine impeller;
- a plurality of nozzle vanes supported by the nozzle ring, and located along a circumferential direction of the nozzle ring;
- a first elastic member configured to bias the nozzle ring in an axial direction of the shaft relative to the housing;
- and
- a positioning assembly that includes:
- a first engagement portion formed in the nozzle ring and including:
- a first inner surface;
- and
- a second inner surface that faces the first inner surface in the circumferential direction;
- a positioning pin located on the housing and extending in the axial direction, the positioning pin contacting the first inner surface of the first engagement portion so as to position the housing and the nozzle ring, wherein a gap is defined between the positioning pin and the second inner surface;
- and
- a second elastic member configured to bias the nozzle ring to maintain contact between the positioning pin and the first inner surface, thereby restrain the nozzle ring in the circumferential direction relative to the housing.
11 more elements
A turbocharger comprising:
- a turbine impeller fixed to a shaft;
- a housing that houses the turbine impeller and the shaft and rotatably supports the shaft;
- a nozzle ring housed in the housing and located radially outside the turbine impeller;
- a plurality of nozzle vanes supported by the nozzle ring, and located along a circumferential direction of the nozzle ring;
- a first elastic member configured to bias the nozzle ring in an axial direction of the shaft relative to the housing;
- and
- a positioning assembly that includes a second elastic member configured to bias the nozzle ring so as to restrain the nozzle ring in a circumferential direction relative to the housing,
- wherein the positioning assembly comprises:
- a positioning pin located on the housing;
- and
- a first engagement portion includes a notch or a hole formed on the nozzle ring,
- wherein the second elastic member is attached to the housing that is located side by side with the positioning pin in the circumferential direction, and
- wherein the second elastic member is configured to bias the nozzle ring in a biasing direction intersecting an axial direction and a radial direction of the nozzle ring.
10 more elements
A turbocharger comprising:
- a turbine impeller fixed to a shaft;
- a housing that houses the turbine impeller and the shaft and rotatably supports the shaft;
- a nozzle ring housed in the housing and located radially outside the turbine impeller;
- a plurality of nozzle vanes supported by the nozzle ring, and located along a circumferential direction of the nozzle ring;
- a first elastic member configured to bias the nozzle ring in an axial direction of the shaft relative to the housing;
- and
- a positioning assembly that includes a second elastic member configured to bias the nozzle ring so as to restrain the nozzle ring in a circumferential direction relative to the housing,
- wherein the positioning assembly includes:
- a positioning pin provided on the housing and extending in the axial direction of the nozzle ring;
- and
- a common engagement portion provided on the nozzle ring, that engages with both of the positioning pin and the second elastic member, and
- wherein the second elastic member is located adjacent to the positioning pin in the circumferential direction at the common engagement portion, and biases the nozzle ring in a biasing direction intersecting both the axial direction and a radial direction of the nozzle ring.
9 more elements
A turbocharger comprising:
- a turbine impeller fixed to a shaft;
- a nozzle ring located radially outside the turbine impeller;
- a housing that houses the turbine impeller and the nozzle ring;
- a vane supported by the nozzle ring;
- a positioning assembly that includes:
- an elastic body configured to bias the nozzle ring so as to restrain the nozzle ring in a circumferential direction of the nozzle ring relative to the housing;
- and
- a positioning pin extending in an axial direction of the shaft;
- and
- a pin engagement portion engaging with the positioning pin to position the nozzle ring in the circumferential direction relative to the housing,
- wherein the elastic body is located side by side with the positioning pin in a circumferential direction of the nozzle ring.
8 more elements
Dependencies are inferred from the claim text.