Abstract: A guide vane for a variable turbine geometry and a turbine assembly provided with same are described. The guide vane has an outer face that is at least partly concave in design. The inner face opposite the outer face may also be at least partly concave in design. This gives the guide vane a good functional capability when arranged in a vane ring of a turbine, since an overflow through the gap between the guide vane and the neighboring walls is reduced.

Abstract: Example embodiments relate to a turbocharger for a combustion machine, having a bearing housing, in which a rotor shaft is mounted so as to be rotatable about a rotor axis of rotation. An exhaust-gas turbine with a turbine wheel is arranged rotationally conjointly on the rotor shaft and which has an impeller blade arrangement with multiple turbine blades, and with a turbine housing is mechanically fixed to the bearing housing and which surrounds the turbine wheel With respect to a meridional view of the exhaust-gas turbine, the turbine housing and the turbine wheel are designed and adapted to one another such that the following condition is satisfied: L cover L axTip > 1 - Tip clr R in × 3 ? ? 4 × 1 ( 1 - R out R in ) .

Abstract: A guide vane for a variable turbine geometry and a turbine assembly provided with same are described. The guide vane has an outer face that is at least partly concave in design. The inner face opposite the outer face may also be at least partly concave in design. This gives the guide vane a good functional capability when arranged in a vane ring of a turbine, since an overflow through the gap between the guide vane and the neighboring walls is reduced.

Abstract: Example embodiments relate to a turbocharger for a combustion machine, having a bearing housing, in which a rotor shaft is mounted so as to be rotatable about a rotor axis of rotation. An exhaust-gas turbine with a turbine wheel is arranged rotationally conjointly on the rotor shaft and which has an impeller blade arrangement with multiple turbine blades, and with a turbine housing is mechanically fixed to the bearing housing and which surrounds the turbine wheel With respect to a meridional view of the exhaust-gas turbine, the turbine housing and the turbine wheel are designed and adapted to one another such that the following condition is satisfied: L cover L axTip > 1 - Tip clr R in × 3 ? ? 4 × 1 ( 1 - R out R in ) .