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US 10,329,948 B2Granted
Stamped variable geometry turbocharger lever using retention collar
AssigneeBorgWarner Inc.
InventorsRyan Howell, Eli Morgan, Donald Michael Kennedy
Life of this patent
Estimating the term…
Abstract
A pivot shaft assembly for a turbocharger with variable turbine geometry (VTG) is provided. The pivot shaft assembly may include a pivot shaft, a pivot fork extending from the pivot shaft, a VTG lever disposed on the pivot shaft, and a retention collar axially coupled to the pivot shaft such that the VTG lever is axially aligned with the retention collar and the pivot shaft.
Claims12
A pivot shaft assembly for a turbocharger with variable turbine geometry (VTG), comprising:
- a pivot shaft;
- a pivot fork extending from the pivot shaft;
- a VTG lever disposed on the pivot shaft;
- and
- a retention collar axially coupled to the pivot shaft such that the VTG lever is axially aligned with the retention collar and the pivot shaft;
- wherein the VTG lever is made by a process of stamping;
- and
- wherein the retention collar includes a radially outermost portion that is rigidly coupled to the VTG lever by welding or clinching.
5 more elements
A method of manufacturing a pivot shaft assembly for a turbocharger having variable turbine geometry (VTG), comprising:
- providing a pivot shaft, the shaft having an axis;
- stamping a VTG lever sized to axially receive the pivot shaft;
- providing a retention collar sized to axially receive the pivot shaft, the retention collar having a radially outermost portion;
- and
- securing the VTG lever onto the pivot shaft using the retention collar;
- and
- rigidly coupling the radially outermost portion of the retention collar to the VTG lever by welding or clinching.
4 more elements
Dependencies are inferred from the claim text.