Axial thrust loading mitigation in a turbocharger
AssigneeFord Global Technologies, LLC
InventorsHarold Huimin Sun, Leon Hu, Dave R. Hanna, Jianwen James Yi, Eric Warren Curtis
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Abstract
Methods and systems are provided for a turbocharger system to reduce and balance axial thrust load on the turbine shaft and the associated bearing system and sealing. In one example, a partial back plate compressor may be used in combination with an axial turbine to reduce axial thrust load and to improve turbocharger transient response time. In another example, a regenerative turbocharger system with back-to-back turbo pump may be used to reduce and balance axial thrust load.
Claims5
A regenerative turbocharger system of an internal combustion engine, comprising:
- a partial back plate compressor;
- a back-to-back hydraulic turbine comprising two turbine rotors coupled back-to-back;
- a turbine;
- a back-to-back turbo pump;
- a common turbine shaft, the back-to-back hydraulic turbine, the partial back plate compressor, the back-to-back turbo pump, and the turbine each mounted on the common turbine shaft;
- and
- a seal positioned between a housing of the back-to-back hydraulic turbine and the common turbine shaft at a location spaced away from a high pressure area adjacent to a plurality of back-to-back rotary blades and an inlet in the back-to-back hydraulic turbine.
Dependencies are inferred from the claim text.