A turbine assembly for a turbocharger can include a C-shaped seal that includes an inner diameter, an outer diameter, an axis aligned parallel to a rotational axis of a turbine wheel, a lower lip that contacts a lower axial face of an outer surface of a shroud component along an annular portion of t
A turbine assembly for a turbocharger can include a C-shaped seal that includes an inner diameter, an outer diameter, an axis aligned parallel to a rotational axis of a turbine wheel, a lower lip that contacts a lower axial face of an outer surface of a shroud component along an annular portion of the shroud component, an upper lip that contacts a lower axial face of an inner surface of a turbine housing, and a wall portion that extends between the lower lip and the upper lip. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.
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1. A turbine assembly for a turbocharger comprising: a turbine wheel that comprises a base, a nose, blades, and a rotational axis that extends from the base to the nose;a turbocharger shaft operatively coupled to the turbine wheel;an annular component that comprises an opening that receives at least
1. A turbine assembly for a turbocharger comprising: a turbine wheel that comprises a base, a nose, blades, and a rotational axis that extends from the base to the nose;a turbocharger shaft operatively coupled to the turbine wheel;an annular component that comprises an opening that receives at least a portion of the turbine wheel;a shroud component that comprises an axis aligned with the rotational axis of the turbine wheel and an annular portion and a cylindrical portion that comprise an outer surface and an inner shroud surface wherein the outer surface comprises a lower axial face and an upper axial face;mounts that extend from the annular component to locations at the shroud component wherein the mounts form an axial clearance between the annular component and the shroud component;a turbine housing that comprises an axis aligned with the rotational axis of the turbine wheel, a lower axial face, an upper axial face and an inner surface that extends between the lower axial face and the upper axial face;vanes wherein each of the vanes comprises an axial post that comprise a common post radius that is less than respective radii of the locations of the mounts at the shroud component as measured from the axis of the shroud component; anda C-shaped seal that comprises an inner diameter, an outer diameter, an axis aligned parallel to the rotational axis of the turbine wheel, a lower lip that contacts the lower axial face of the outer surface of the shroud component along the annular portion of the shroud component, an upper lip that contacts the lower axial face of the inner surface of the turbine housing, and a wall portion that extends between the lower lip and the upper lip, wherein at least the lower lip of the C-shaped seal comprises a lip radius that is approximately the common post radius or greater. 2. The turbine assembly of claim 1 wherein the wall portion comprises a radiused portion (rb), an upper length that extends from an upper end of the radiused portion (rb) to the upper lip, and a lower length that extends from a lower end of the radiused portion (rb) to the lower lip. 3. The turbine assembly of claim 2 wherein the upper length and the lower length are straight lengths. 4. The turbine assembly of claim 2 wherein the radiused portion (rb) comprises a mid-point that defines the inner diameter of the C-shaped seal. 5. The turbine assembly of claim 1 wherein the C-shaped seal comprises a free-standing axial dimension between the lower lip and the upper lip. 6. The turbine assembly of claim 5 wherein the C-shaped seal comprises a compressed axial dimension between the lower lip and the upper lip that is less than the free-standing axial dimension. 7. The turbine assembly of claim 1 wherein the lower lip comprises a lower lip diameter and the upper lip comprise an upper lip diameter. 8. The turbine assembly of claim 7 wherein the locations of the mounts at the shroud component comprise a common mount diameter. 9. The turbine assembly of claim 8 wherein the inner diameter of the C-shaped seal is greater than an outer diameter of the cylindrical portion of the shroud component, wherein the lip diameters are greater than the inner diameter of the C-shaped seal and wherein the common mount diameter is greater than the lip diameters. 10. The turbine assembly of claim 9 wherein the C-shaped seal directs contact forces axially between the shroud component and the turbine housing. 11. The turbine assembly of claim 10 wherein the shroud component directs forces due to contact with the lower lip of the C-shaped seal to the mounts. 12. The turbine assembly of claim 1 wherein each of the vanes comprises a planar upper surface disposed approximately parallel to a lower surface of the annular portion of the shroud component. 13. The turbine assembly of claim 1 wherein the C-shaped seal comprises an elongated C-shape defined by a width to height ratio greater than or equal to 1. 14. The turbine assembly of claim 13 wherein the width to height ratio is greater than or equal to 1.1. 15. The turbine assembly of claim 13 wherein the width to height ratio is greater than or equal to 1.8. 16. The turbine assembly of claim 1 wherein the C-shaped seal comprises an open side and a closed side wherein the open side faces radially outward. 17. A method comprising: providing a C-shaped seal that comprises a width to height ratio greater than or equal to 1, an inner diameter and an outer diameter wherein the C-shaped seal comprises a wall portion defined by a radius of curvature and wherein the wall portion comprises an upper length that extends from an upper end of the wall portion to an upper lip and a lower length that extends from a lower end of the wall portion to a lower lip;providing a cartridge that comprises an axis, a shroud component, mounts and vanes wherein the shroud component comprises an annular portion and a cylindrical portion and wherein the mounts comprise mount radii measured from the axis, and wherein each of the vanes comprises an axial post that comprise a common post radius measured from the axis that is less than the mount radii;fitting the C-shaped seal on to the shroud component to seat the C-shaped seal about the cylindrical portion and in contact with the annular portion to form a sub-assembly; andinserting the sub-assembly into a turbine housing to contact the C-shaped seal with an axial face of the turbine housing wherein the axial face extends from an inner radius to an outer radius at a volute and wherein at least the lower lip of the C-shaped seal comprises a lip radius that is approximately the common post radius or greater. 18. A turbocharger assembly comprising: a compressor wheel disposed in a compressor housing;a center housing that comprises a bore and a bearing system disposed in the bore, the compressor housing attached to the center housing;a shaft and turbine wheel assembly that comprises a shaft portion, a turbine wheel portion, and a rotational axis wherein the compressor wheel is attached to the shaft portion and the shaft portion is rotatably supported by the bearing system disposed in the bore of the center housing;a variable geometry cartridge positioned with respect to the center housing wherein the variable geometry cartridge comprises a shroud component that comprises an axis aligned with the rotational axis of the turbine wheel, an inner shroud surface, a lower axial face, an upper axial face and an outer surface that extends between the lower axial face and the upper axial face and wherein the variable geometry cartridge comprises mounts and vanes wherein each of the vanes comprises an axial post that comprise a common post radius that is less than respective radii of the locations of the mounts at the shroud component as measured from the axis of the shroud component;a turbine housing attached to the center housing wherein the turbine housing comprises an axis aligned with the rotational axis of the turbine wheel, a lower axial face, an upper axial face and an inner surface that extends between the lower axial face and the upper axial face; anda C-shaped seal that comprises an inner diameter, an outer diameter, an axis aligned parallel to the rotational axis of the turbine wheel, a lower lip that contacts the lower axial face of the shroud component, an upper lip that contacts the lower axial face of the turbine housing, and a wall portion that extends between the lower lip and the upper lip, wherein at least the lower lip of the C-shaped seal comprises a lip radius that is approximately the common post radius or greater.
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이 특허에 인용된 특허 (4)
Bruestle Claus (Heimsheim DEX), Exhaust gas turbocharger on an internal-combustion engine.
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