Patent ID: 11933312
Assignee: GARRETT TRANSPORTATION I INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  B  H | IPC B  F

Claim 9:
10. A method of manufacturing a turbocharger comprising:
providing a housing and a rotating group; and
supporting the rotating group within the housing, the rotating group including a compressor wheel that cooperates with the housing to define a compressor section of the turbocharger, the rotating group including a turbine wheel that cooperates with the housing to define a turbine section, the turbine wheel including a bleed pressure surface, the turbine wheel including a turbine hub and a plurality of turbine blades that project from the turbine hub, the plurality of turbine blades having a blade tip disposed at a first radius, the turbine hub having an outer radial area disposed at the first radius, the turbine wheel including a bleed pressure member radially extending from the outer radial area of the turbine hub and terminating at a second radius that is greater than the first radius, the bleed pressure member including the bleed pressure surface between the first radius and the second radius, the turbine wheel and the housing cooperating to define a turbine forward space and a turbine back space, the plurality of turbine blades supported for rotation within the turbine forward space, the compressor wheel and the housing cooperating to define a compressor forward space and a compressor back space, the compressor wheel including a plurality of compressor blades supported for movement within the compressor forward space;
housing an electric motor within a motor cavity of the housing, and operatively connecting the electric motor to the rotating group, the electric motor configured for drivingly rotating the rotating group;
fluidly connecting the compressor section to the turbine section via a bleed passage that extends at least partly through the housing, the bleed passage including a bleed inlet that is fluidly connected to the compressor back space to receive a bleed flow of fluid therefrom, the bleed passage including a bleed outlet to the turbine back space, the bleed passage including a segment that extends through the housing and outside the motor cavity to fluidly connect the bleed inlet and the bleed outlet, the bleed passage configured to direct the bleed flow in a downstream direction from the bleed inlet, through the segment, and to the bleed outlet to supply a thrust counterbalance load to the bleed pressure surface.