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US 11,891,909 B2Granted
System and method for an electric turbocharger
AssigneeTransportation IP Holdings, LLC
InventorsAdam Felton, Christopher Homison, Louis Kobielski
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for electric turbochargers. In one example, a turbocharger comprises a shaft coupling a compressor wheel to a turbine wheel, an electric machine including a stator encircling the shaft between the compressor wheel and the turbine wheel, and an oil supply passage formed in a housing of the electric machine and fluidly coupled to a first oil nozzle oriented toward the shaft.
Claims19
A turbocharger system, comprising:
- a shaft coupling a compressor wheel to a turbine wheel;
- an electric machine including a stator encircling the shaft between the compressor wheel and the turbine wheel;
- and
- an oil supply passage formed in a housing of the electric machine and fluidly coupled to a first oil nozzle, the first oil nozzle spraying a jet of oil against an exterior surface of the shaft.
1 more element
A turbocharger system, comprising:
- a shaft coupling a compressor wheel to a turbine wheel;
- an electric machine including a stator encircling the shaft between the compressor wheel and the turbine wheel;
- an oil supply passage formed in a housing of the electric machine and fluidly coupled to a first oil nozzle oriented toward the shaft;
- and
- the housing of the electric machine defining a buffer air passage extending between the compressor wheel and a chamber at the turbine wheel, wherein while the chamber is pressurized, a seal plate defining a wall of the chamber is biased toward the turbine wheel.
2 more elements
A system, comprising:
- a turbocharger including a compressor, a turbine, and a compressor bearing carrier;
- an electric machine within the turbocharger including a housing and a rotor extending through each of the housing and the compressor bearing carrier;
- and
- an oil supply passage formed through each of the housing and the compressor bearing carrier, the oil supply passage carrying oil which flows against an exterior surface of the rotor.
1 more element
A method, comprising:
- flowing oil through an oil supply passage of an electric turbocharger to an oil nozzle arranged within the electric turbocharger, and
- spraying the oil from the oil nozzle against surfaces of a shaft extending through an electric machine of the electric turbocharger and coupling to each of a compressor wheel and a turbine wheel.
Dependencies are inferred from the claim text.