Cummins Turbo Technologies Limited

David Henry Brown

John Frederick Parker

David Andrew Luck

A variable geometry turbine comprises a turbine wheel () supported in a housing () for rotation about a turbine axis. An annular inlet passage () is defined between first and second radial inlet surfaces, one of said first and second inlet surfaces being defined by a moveable wall member (). A substantially annular array of vanes () is provided which extend across the inlet passageway (); each vane () being fixed to said first inlet surface. Each vane () has first and second major vane surfaces () having a chordal length extending between a radially outer leading vane edge () and a radially inner trailing vane edge (), the first major vane surface () facing generally away from the axis and the second major vane surface () facing generally towards the axis. A rib () extends across at least a substantial portion of the chordal length of at least one of the first and second major vane surfaces () of one or more vanes () of the array.

Variable geometry turbine

A variable geometry turbine comprises a turbine wheel () supported in a housing () for rotation about an axis. A nozzle ring () is moveably mounted within a cavity () provided within the housing for adjustment of the width of an annular inlet passageway () extending radially inwards towards the turbine wheel (). An array of inlet guide vanes () extends between a radial face of the nozzle ring () and an opposing wall of the inlet () defining a radial vane passage. A first circumferential array of apertures () is provided through the radial face, each of which lies substantially within the vane passage. A second circumferential array of apertures () is also provided in said radial face, each of lies substantially upstream or downstream of the first array () of apertures. The inlet () and cavity () are in fluid communication via both the first and second sets of apertures ().

Growing community of inventors

West Yorkshire, United Kingdom

David Henry Brown