Valve assembly for a turbine of an exhaust gas turbocharger and turbine for an exhaust gas turbocharger

Abstract

Valve assembly (10) for opening and closing at least one opening of a turbine of an exhaust gas turbocharger of an internal combustion engine through which exhaust gas flows, comprising a valve element (12) movable between at least one closed position for closing the opening and at least one open position for opening the opening, comprising a lever (14) formed separately from the valve element (12) and connected to the valve element (12), by means of which the valve element (12) is movable between the closed position and the open position, characterized by at least one support element (34) arranged between at least one partial region (T1) of the valve element (12) formed from a first material and at least one partial region (T2) of the lever (14) formed from a second material and formed from a metallic third material different from the first material and the second material.via which the sub-areas (T1, T2) can be supported against each other or are supported against each other, and the third metallic material is tungsten carbide.

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