Borgwarner Inc.

Nathan McArdle

Sean Rylance

Paul Murphy

Tristram Palmer-White

A turbocharger includes a turbine housing defining a turbine housing interior, a turbine wheel disposed within the turbine housing interior, a shaft coupled to and rotatable by the turbine wheel, a compressor housing defining a compressor housing interior and a flow path, and a compressor wheel disposed within the compressor housing interior and coupled to the shaft. The compressor wheel has a hub coupled to the shaft, and a plurality of impeller blades extending radially from the hub. The plurality of impeller blades define an inducer end having an inducer diameter, and an exducer end having an exducer diameter greater than the inducer diameter. The inducer diameter and the exducer diameter establish a compressor trim. The compressor wheel also has a compressor wheel shroud disposed about the plurality of impeller blades. The compressor wheel shroud encloses the plurality of impeller blades to define a shroud interior.

Compressor wheel, method of making the same, and turbocharger including the same

A turbocharger () includes a compressor section and a cast turbine section. The turbine section includes a turbine wheel (), and a turbine housing () that defines a gas inlet (), a gas outlet (), a volute () disposed between the gas inlet () and the gas outlet (). The turbine housing () also includes vanes () that protrude integrally from, and have a fixed orientation relative to, an inner surface of the turbine housing (). The turbine wheel () is disposed in the turbine housing () between the volute () and the gas outlet (), and the vanes () are disposed in the turbine housing () between the turbine wheel () and the volute (). A method of casting the turbine housing () and the vanes () together as a single piece is described.

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Baildon, United Kingdom

Nathan McArdle