Abstract: A radial compressor having an impeller having a housing with a radially outer and a radially inner insertion section a main flow channel for suppling a medium towards the impeller, a circulation chamber radially outside of the main flow channel separated from the main flow channel by a contour wall and connected to the insertion section via struts. The main flow channel is delimited by the contour wall and by a first segment of the insertion section. The struts engage with a second segment of the insertion section. The second segment of the insertion section engages with a downstream end of the first segment of the insertion section. The upstream end of the first segment of the insertion section protrudes freely in the direction of the contour wall. The first segment of the insertion section has a constant thickness.

Abstract: A turbo machine, having a housing and, an impeller received in the housing. The housing has at least two housing parts connected to one another via a flange connection. A first housing part of the housing parts has threaded bores for connecting screws. A second housing part of the housing parts connected to one another has through-bores for the connecting screws. The second housing part lies against the first housing part with a first face and screw heads of the connecting screws lie against an opposite second face of the second housing part. The through-bores of the second housing part on and adjacent to the second face have a smaller cross-sectional area than on and adjacent to the first face.

Abstract: A turbocharger having a housing and a stator. The housing and/or the stator has an inner and an outer housing component. An inner section of the housing component lies directly against and covers a lateral section of the housing component. The lateral section and the inner section are formed such that they form a positive-locking connection, which fixes the inner housing component and the outer housing component against positional change along a longitudinal axis of the turbocharger and/or against a rotation about this longitudinal axis. The inner housing component and/or the outer housing component is at least partly produced by additive manufacturing.

Abstract: An auxetic material or auxetic structures in an exhaust gas turbocharger having a shaft and at least one compressor wheel arranged on the shaft, a turbine wheel and a housing in which the shaft, the compressor wheel, and the turbine wheel are arranged. At least one part of the housing includes an auxetic material with a negative Poisson's ratio.

Abstract: A burst protection device is provided for a radial turbocharger having a turbine housing completely enclosing a turbine wheel rotatably arranged in the turbine housing, and turbine housing inner wall. The burst protection device is annularly arranged in the radial turbocharger about a central axis (A) in a circumferential direction on the turbine housing inner wall, so as to at least partly engage about the turbine wheel. The burst protection device defines at least one recess/hollow space. The at least one recess/hollow space is configured such that kinetic energy of fragments of the turbine wheel produced upon bursting of the turbine wheel is absorbed by the burst protection device based on plastic deformation of the at least one recess/hollow space, a first one of the at least one recess/hollow space being unilaterally open in a direction of the turbine housing.

Abstract: A radial compressor, with a compressor rotor, a compressor housing having a radially outer and a radially inner insert section, a main flow channel for supplying a medium toward the compressor rotor, a circulation chamber arranged radially outside of the main flow channel, which is separated from the main flow channel by a contour wall connected with the main flow channel via circulation openings to the insert section via struts extending into the circulation chamber. The main flow channel is bordered by the contour wall, and upstream from the contour wall by an upstream portion of the insert section. A suction element is arranged upstream from the compressor housing, whose radially outer portion adjoins the spiral housing section, and whose radially inner portion adjoins the upstream portion of the insert section. Adjoining surfaces of the suction element and the insert section lie on a cylindrical surface.

Abstract: A radial compressor having an impeller having a housing with a radially outer and a radially inner insertion section a main flow channel for suppling a medium towards the impeller, a circulation chamber radially outside of the main flow channel separated from the main flow channel by a contour wall and connected to the insertion section via struts. The main flow channel is delimited by the contour wall and by a first segment of the insertion section. The struts engage with a second segment of the insertion section. The second segment of the insertion section engages with a downstream end of the first segment of the insertion section. The upstream end of the first segment of the insertion section protrudes freely in the direction of the contour wall. The first segment of the insertion section has a constant thickness.