Borgwarner Inc.

Jair Reyes

Rajendra Vemula

Guenther Guth

An adjustment ring () is configured to facilitate vane () position adjustment in a variable turbine geometry turbocharger (), and is formed of an assembly of one or more first ring portions () that are formed of a first material, and one or more second ring portions () that are formed of a second material. The first material has different material properties than the second material. In some embodiments, high-wear portions of the adjustment ring () can selectively and cost-effectively be formed of wear-resistant material while remaining portions are formed of a conventional material. A cost-effective method of manufacturing multi-piece adjustment rings () is described.

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Spartanburg, SC, United States of America

Jair Reyes