VARIABLE TURBINE/COMPRESSOR GEOMETRY
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United States of America Patent
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Issued Date -
Sep 25, 2014
app pub date -
Mar 2, 2012
filing date -
May 13, 2011
priority date (Note) -
Abandoned
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Abstract
A variable turbine/compressor geometry for an exhaust gas turbocharger of an internal combustion engine includes a blade bearing ring having guide blades rotatably mounted therein and a cover disc which is arranged on the face end of the guide blades. At least one gas guide channel may run through at least one guide blade. The gas guide channel including, adjacent to a profile lug, a least one inlet opening, and on at least one of a face end directed towards the cover disc and a bottom side directed towards the blade bearing ring includes an outlet opening. The gas guide channel may be configured to generate a friction-reducing air cushion during operation on at least one of the face end and the bottom side.
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