Abstract: A bearing bush of a turbocharger for radially mounting a shaft of the turbocharger. The bearing bush on an inner surface facing the shaft to be mounted, which forms a running surface of the bearing bush, has a microstructuring of multiple cup-shaped recesses at least in sections. The recesses have a maximum depth.

Abstract: A radial compressor of an exhaust gas turbocharger, with a rotating impeller, a fixed housing; a main flow passage defined by the housing for feeding a medium to be compressed towards the impeller; a secondary flow chamber arranged radially outside the main flow passage, which is separated from the main flow passage by a contour wall and is connected to the main flow passage via a secondary flow opening; struts extending in the secondary flow chamber, via which the contour wall is connected to the housing. The struts are curved having a first connecting section of the contour wall that extends in the radial direction and a second connecting section on the housing that extends in the axial direction.

Abstract: A turbocharger, having a turbine and a compressor. The turbine comprises a turbine housing and a turbine rotor with turbine blades. Radially outer edges of the rotor blades and a portion of the turbine housing or a stator-side component connected to the turbine housing define a turbine-side gap. The compressor comprises a compressor housing and a compressor rotor with compressor blades. Radially outer edges of the compressor blades and a portion of the compressor housing facing the compressor blades or a stator-side component connected to the compressor housing define a compressor-side gap. The portion of the turbine housing facing the turbine rotor blades or the stator-side component connected to the turbine housing and/or the portion of the compressor housing facing the compressor rotor blades or the stator-side component connected to the compressor housing comprises a running-in structure comprising hollow spaces.

Abstract: A radial compressor, with a rotor-side impeller, a stator-side housing, an inflow passage via which medium to be compressed can be fed to the impeller in the axial direction, a diffuser via which compressed medium can be conducted in the radial direction away from the impeller in the direction of a spiral housing section of the housing The diffuser radially outside in a transition region to the spiral housing section has an enlarging flow cross section.

Abstract: A radial compressor of an exhaust gas turbocharger, with a rotating impeller, a fixed housing; a main flow passage defined by the housing for feeding a medium to be compressed towards the impeller; a secondary flow chamber arranged radially outside the main flow passage, which is separated from the main flow passage by a contour wall and is connected to the main flow passage via a secondary flow opening; struts extending in the secondary flow chamber, via which the contour wall is connected to the housing. The struts are curved having a first connecting section of the contour wall that extends in the radial direction and a second connecting section on the housing that extends in the axial direction.

Abstract: A radial compressor, with a rotor-side impeller, a stator-side housing, an inflow passage via which medium to be compressed can be fed to the impeller in the axial direction, a diffuser via which compressed medium can be conducted in the radial direction away from the impeller in the direction of a spiral housing section of the housing The diffuser radially outside in a transition region to the spiral housing section has an enlarging flow cross section.

Abstract: A radial compressor, in particular radial compressor of an exhaust gas turbocharger, with an impeller, a stationary housings, a main flow passage defined by the housing for feeding a medium to be compressed in the direction of the impeller, and a secondary flow chamber arranged radially outside the main flow passage, which is delimited from the main flow passage by a contour wall and which is connected to the main flow passage via a secondary flow opening in the region of the impeller. Seen in the meridian section, the secondary flow opening, via which the secondary flow chamber is connected to the main flow passage in the region of the impeller, is set obliquely or inclined relative to a radial direction.

Abstract: A bearing bush of a turbocharger for radially mounting a shaft of the turbocharger. The bearing bush on an inner surface facing the shaft to be mounted, which forms a running surface of the bearing bush, has a microstructuring of multiple cup-shaped recesses at least in sections. The recesses have a maximum depth.

Abstract: A radial compressor having a compressor rotor with blades; a compressor housing, a diffuser having guide vanes. The diffuser delimits a flow duct in radial direction. The guide vanes of have a flow inlet edge, a flow outlet edge, and flow-conducting sides. The guide vanes project into the flow duct that is delimited by the diffuser. The guide vanes merge into a support body subject to forming a curvature region that is defined on the flow side. In each position of the curvature region, i.e. in the region of the flow inlet edge, in the region of the flow outlet edge and in regions between the flow inlet edge and the flow outlet edge a curvature radius that is defined on the flow side is formed in each case.