Abstract: A turbocharger having a turbine, a compressor, and a bearing housing The turbine has a turbine housing, a nozzle ring, and a turbine rotor. The A fastening device a first and second section. The turbine housing and the bearing housing are connected via the fastening device mounted on the flange of the turbine housing by the first section and covers the flange of the bearing housing by the second section. The nozzle ring is installed such that a flange thereof is positioned, relative to a flow channel, on a side of the flow channel opposite the flange of the turbine housing. The structure avoids trenching effects and leakage between the turbine and bearing housing can thus be reduced.

Abstract: A turbocharger, having a turbine and a compressor. The turbine has a turbine housing and a turbine rotor. The compressor has a compressor housing and a compressor rotor coupled to the turbine rotor by a shaft. The turbine and compressor housings are connected to a bearing housing in which the shaft is supported. The turbine and bearing housings are a flange of the turbine housing by a first section and covers a flange of the bearing housing by a second section. A flange of a nozzle ring is clamped between respective flanges of the turbine housing and the housing. Between the flange of the turbine housing and the flange of the nozzle ring, an axial sealing region is formed with scaling surfaces that lie against each other and one sealing surfaces has a contour deviating from a flat contour.