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US 2016/0102678 A1Published application
Heat shield with centering features
AssigneeBorgWarner Inc.
InventorsJerud CRANDALL, Gordon JENKS, Michael THAYER
Life of this patent
Estimating the term…
Abstract
A turbocharger (10) includes a shaft (26) rotatably supported within a bearing housing (28), a turbine wheel (22) connected to the shaft (26), and a heat shield (150, 250) disposed between the turbine wheel (22) and the bearing housing (28). The heat shield (150, 250) includes surface features (80, 180) formed on at least one of a sidewall (57) portion thereof and a flange (63) portion thereof that locate the heat shield (150, 250) relative to the bearing housing (28) such that the heat shield (150, 250) is coaxial with the rotational axis of the shaft (26).
Claims15
A turbocharger (10) comprising
- a shaft (26) rotatably supported within a bearing housing (28),
- a turbine wheel (22) disposed in a turbine housing (14) and connected to the shaft (26), and
- a heat shield (150, 250) including
- a radially extending base (51) having a central opening (52) that receives the shaft (26),
- a radially extending flange (63) that is axially offset from the radially extending base (51), and
- a generally axially-extending sidewall (57) intermediate the base (51) and the flange (63), the sidewall (57) having a first end (58) connected to a radially-outermost end of the base (51), and a second end (59) that is opposed to the first end (58) and connected to a radially-innermost end (65) of the flange (63),
- wherein the heat shield (150, 250) includes surface features (80, 180) formed on at least one of the sidewall (57) and the flange (63) that locate the heat shield (150, 250) relative to the bearing housing (28) such that the heat shield (150, 250) is co-axial with the rotational axis of the shaft (26).
4 more elements
A turbocharger (10) comprising
- a shaft (26) rotatably supported within a bearing housing (28),
- a turbine wheel (22) disposed in a turbine housing (14) and connected to the shaft (26), and
- a heat shield (150) including
- a radially extending base (51) having a central opening (52) that receives the shaft (26),
- a radially extending flange (63) that is axially offset from the radially extending base (51), and
- an axially-extending sidewall (57) intermediate the base (51) and the flange (63), the sidewall (57) having
- a first end (58) connected to a radially-outermost end of the base (51), and a second end (59) that is opposed to the first end (58) and connected to a radially-innermost end (65) of the flange (63),
- wherein the heat shield (150) includes surface features (80) formed on the flange (63) that locate the heat shield (150) relative to the bearing housing (28), the surface features (80) comprising an axially protruding ridge (82) that is formed in the flange (63), the ridge (82) being received within a circumferential groove (23) formed in the bearing housing (28) whereby the heat shield (150) is located relative to the bearing housing (28).
5 more elements
A turbocharger (10) comprising
- a shaft (26) rotatably supported within a bearing housing (28),
- a turbine wheel (22) disposed in a turbine housing (14) and connected to the shaft (26), and
- a heat shield (250) including
- a radially extending base (51) having a central opening (52) that receives the shaft (26),
- a radially extending flange (63) that is axially offset from the radially extending base (51), and
- an axially-extending sidewall (57) intermediate the base (51) and the flange (63), the sidewall (57) having
- a first end (58) connected to a radially-outermost end of the base (51), and a second end (59) that is opposed to the first end (58) and connected to a radially-innermost end (65) of the flange (63),
- wherein the heat shield (250) includes surface features (180) formed on the sidewall (57) that locate the heat shield (250) relative to the bearing housing (28), the surface features (180) including radially inward-extending protrusions (182) that are spaced along a circumference of the sidewall (57), a radially inward-facing surface (60a) of the protrusions (182) abutting a radially outward-facing surface (28b) of the bearing housing (28), whereby the heat shield (250) is located relative to the bearing housing (28).
5 more elements
Dependencies are inferred from the claim text.