Patent ID: 9556880
Date: 2017-01-31
CPC Classifications: F01D,F04D,F05D

Claim:
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; and a 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.