Patent ID: 8250868

Claim:
A variable turbine geometry of an exhaust gas turbocharger of a motor vehicle, comprising: a turbine wheel of the exhaust gas turbocharger including inflow cross sections; a fixed guide blade ring including guide blades; and an axially moveable control blade ring including control blades and a cross carrier, wherein an axial relative position of guide blades of the guide blade ring in relation to the control blades of the control blade ring defines the size of inflow cross sections to the turbine wheel of the exhaust gas turbocharger, and wherein the guide blades and the control blades extend in opposite directions to one another as far as to their respective free ends and the control blades are arranged on the cross carrier of the control blade ring, which performs at least one of opening, partially opening and closing as a function of the axial relative position, additional inflow paths for the enlargement or the reduction of the inflow cross sections.