Borgwarner Inc.

Kurtis Henderson

Rajmohan Chandramohanan

David George Grabowska

Michael Bucking

John P Watson

Tilman Bernauer

A number of variations may include a product that may be usable with a turbocharger system and may include a housing that may define a lubrication bore. A bearing assembly may be positioned in the housing. A shaft may extend through, and may be supported by, the bearing assembly. A turbine wheel may be connected to the shaft. An end cap may be connected between the housing and the turbine wheel. The end cap may define a cooling chamber. A spray head may provide an opening between the lubrication bore and the cooling chamber.

Bearing housing

A variable geometry turbocharger is simplified yet able to maintain pulse energy. In a first embodiment, a turbine housing is provided with a pivoting wall which pivots about a point near the entry to the turbine housing. By moving the wall about the pivot point, the effective volume of the turbine housing volute is varied, thus effectively reducing the volume of exhaust gas in the volute, allowing control of exhaust gas flowing to the turbine wheel. In the second embodiment of the invention, a rotating wedge segment within the volute is rotated from a first position to a second position, changing the effective volume of the volute and allowing control of exhaust gas flowing to the turbine wheel.

Simplified variable geometry turbocharger with variable flow volumes

A simplified, low cost, turbine flow controlling device, using a sliding gate, with an actuator to control exhaust flow to multiple volutes, which volutes have perforated transverse divider walls. By moving the sliding gate () from a closed position () through a displacement of 'a' to the next position b; and then from position bthrough a displacement of 'b' to the next position c, each a discreet movement, by a simple actuator, an increasing number of volutes are opened for flow from the exhaust manifold, via the volutes with perforated transverse divider walls, to the turbine wheel, without the attenuation of pulse energy usually seen in VTGs, at a cost lower than that of a VTG.

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Candler, NC, United States of America

Kurtis Henderson