Turbine bearing and seal assembly for a turbocharger
AssigneeElectro-Motive Diesel, Inc.
InventorsGary R. Svihla, Raji Rexavier, Joshua D. Schueler
Life of this patent
Estimating the term…
Abstract
A turbine bearing and seal assembly is disclosed. The turbine bearing and seal assembly may have a turbine cartridge. The turbine cartridge may have a compressor end and a turbine end opposite the compressor end. The turbine bearing and seal assembly may also have a bearing attached to the turbine cartridge. The bearing may be disposed between the compressor end and the turbine end. The turbine bearing and seal assembly may further have a seal collar attachable to a shaft. The seal collar may be disposed within the turbine cartridge adjacent the turbine end.
Claims14
A turbine bearing and seal assembly, comprising:
- a turbine cartridge having a compressor end and a turbine end opposite the compressor end;
- a bearing aligned with the turbine cartridge, the bearing being disposed between the compressor end and the turbine end;
- and
- a seal collar attachable to a shaft, the seal collar being disposed within the turbine cartridge, the seal collar extending from a front end disposed adjacent the turbine end to a rear end disposed between the turbine end and the compressor end, the seal collar including:
- a step seal disposed adjacent the front end, the step seal having a conical outer surface;
- and
- a labyrinth seal disposed adjacent the rear end.
A turbocharger, comprising:
- a turbine housing;
- a turbine wheel disposed within the turbine housing and configured to be rotated by exhaust received from an engine;
- a compressor housing;
- a shaft attached to the turbine wheel, the shaft extending from the turbine housing to the compressor housing;
- a compressor impeller disposed within the compressor housing, the compressor impeller being disposed on the shaft and configured to be driven by the turbine wheel;
- a bearing housing disposed coaxially with the shaft;
- a turbine cartridge disposed within the bearing housing, the turbine cartridge including:
- a compressor end;
- a turbine end opposite the compressor end;
- a first cartridge bore extending from the compressor end to a first distal end within the turbine cartridge, the first cartridge bore having a conical inner surface;
- a second cartridge bore extending from the turbine end to a second distal end within the turbine cartridge, the second cartridge bore having a conical shape;
- and
- a third cartridge bore disposed between the first cartridge bore and the second cartridge bore, the third cartridge bore having a cylindrical shape;
- a bearing disposed within the third cartridge bore of the turbine cartridge, the bearing being configured to support the shaft;
- and
- a seal collar attached to the shaft, the seal collar being disposed within the turbine cartridge, the seal collar extending from a front end disposed adjacent the turbine end to a rear end disposed between the turbine end and the compressor end, the seal collar including:
- a step seal disposed adjacent the front end, the step seal having a conical outer surface;
- and
- a labyrinth seal disposed adjacent the rear end.
Dependencies are inferred from the claim text.