Cummins Inc.

Cummins Turbo Technologies Limited

Timothy James William Proctor

John Frederick Parker

Glenn L Baker

John Bywater

Gary Beshears

John Michael Bywater

A variable geometry turbine comprising: a housing; a turbine wheel supported in the housing for rotation; an annular inlet passage defined between respective inlet surfaces defined by an annular nozzle ring and a facing annular shroud; the nozzle ring can vary the size of the inlet passage; a circumferential array of inlet vanes; the shroud covering the opening of a shroud cavity defined by the housing inlet passage and inboard of the shroud, and defining a circumferential array of slots, the slots and shroud cavity being configured to receive said vanes accommodating movement of the nozzle ring; wherein the annular shroud comprises an outer flange, the outer flange defining a circumferential groove for receiving a retaining ring for securing the shroud in the opening of the shroud cavity and defined on an inboard side by a flange wall; wherein an annular flange rim extends axially inboard from said flange wall.

Variable geometry turbine

A piston ring for sealing gas flow past a sliding cylinder is provided at the interface of the turbine and bearing housings, and is axially close to the turbine inlet. A V-band or similar connection joins the turbine and bearing housings but it is axially further away from the turbine inlet. The piston ring is provided with a spacer element between it and the bearing housing that is at least partially thermally decoupled from the bearing housing.

Gas sealing arrangement for a variable geometry turbocharger

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Columbus, IN, United States of America

Timothy James William Proctor