Abstract: A control device for an exhaust gas turbocharger includes a closing device with a closing element and an element lever, pivoting around an axis. The closing element is designed to open and close a first flow cross-section formed by a partition wall between two spiral channels in the exhaust gas-conducting section. Additionally, there is a second flow cross-section associated with a bypass duct designed to direct flow around a turbine wheel. The closing element comprises two parts: one for the first flow cross-section and another for the second flow cross-section. The element lever features an arm that fits into a cavity in the closing element. This cavity has an inner surface, and the arm's outer surface matches the cavity's shape but with differing dimensions. The arm's peripheral surface includes multiple distinct sections, enhancing the engagement with the closing element's cavity.

Abstract: A control device of an exhaust gas-conducting section of a turbocharger includes a pivotable closing device with a closing element and an element lever. A first element portion thereof opens and closes a first flow cross-section of a flow connection and a second element portion opens and closes a second flow cross-section of a bypass duct of the exhaust gas-conducting section. The element lever includes a lever end portion engaging into a cavity of the closing element. A holding element is fixedly connected to the closing element. The lever end portion includes a first contact surface and, axially spaced apart, a second contact surface. The first contact surface includes an axially-extending first partial surface and a radially-extending second partial surface connected to one another by a third partial surface. The partial surfaces are designed to be able to effect contact with the closing element.

Abstract: The present invention relates to a waste gate component for a turbo charger comprising an alloy comprising about 30 to about 42 wt.-% Ni, about 15 to about 28 wt.-% Cr, about 1 to about 5 wt.-% Cr, about 1 to about 4 wt.-% Ti, and at least about 20 wt.-% Fe, and to processes for preparing such a waste gate component.