Abstract: An internal combustion engine, in particular gas engine, with multiple cylinders, wherein in the cylinders a mixture of charge air and a gaseous fuel can be combusted, with a first turbocharger, in which exclusively the charge air can be compressed, and with a second turbocharger, in which exclusively the gaseous fuel can be compressed.

Abstract: A radial compressor impeller, having a hub-like main body, whose flow-guiding surface has a contour that increases in size in the radial direction from a flow inlet end in the direction of a flow outlet end, moving blades arranged on the hub-like main body, namely first moving blades and second moving blades. The first moving blades are formed longer than the second moving blades. Between each two adjacent first moving blades a second moving blade each is arranged. Third moving blades, which are formed shorter than the second moving blades are arranged between each adjacent first and second moving blade.

Abstract: A turbocharger, has a turbine for expanding a first medium and a compressor for compressing a second medium. The turbine includes a turbine housing and a turbine rotor. The compressor includes a compressor housing and a compressor rotor coupled to the turbine rotor via a shaft. A bearing housing is arranged between the compressor and turbine housings in which the shaft is mounted. The turbine and bearing housings are connected via a fastening device mounted on a flange of the turbine housing with a first section and a second section that covers a flange of the bearing housing at least in sections. The fastening device is contoured curved on a surface of the second section facing the flange of the bearing housing.

Abstract: A turbo compressor of an exhaust gas recirculation of an internal combustion engine, with a compressor housing, a compressor rotor, a shaft that is coupled to the compressor rotor and mounted in the compressor housing, a piston ring seal to prevent an exhaust gas blow-by flow in the direction of bearings, and a labyrinth seal, which seen in the direction of the exhaust gas blow-by flow, is positioned upstream of the piston ring seal.

Abstract: A turbine for a turbocharger, for expanding a medium, with a turbine rotor, having a turbine housing with an insert piece, which runs radially outside of the adjoining blades of the turbine rotor. The insert piece at an upstream end, includes a first flange and a second flange at a downstream end. The insert piece, in a middle section, which extends between the first flange and the second flange, has an approximately constant thickness.

Abstract: A method for working a housing of a turbocharger, namely a bearing housing or a compressor housing or a turbine housing of the turbocharger has the following steps: providing the housing to be worked, filling at least one hollow space of the housing to be worked with an incompressible fluid; and building-up a fluid pressure in the respective hollow space filled with the incompressible fluid, at least locally deforming plastically a housing portion of the housing limiting the respective hollow space of the housing at least in portions.

Abstract: A turbocharger, with a turbine and compressor housing connected to a bearing housing. An inflow housing of the turbine and bearing housing are connected via a fastening device mounted to a flange of the inflow housing with a first section and partially overlaps a flange of the bearing housing with a second section. Between the inflow housing and the bearing housing, flanges of a nozzle ring and of a sealing cover are clamped. Adjoining surfaces contacting one another in a region of a first, second, and/or a third contact clamping region are hardened.

Abstract: A method for working a housing of a turbocharger, namely a bearing housing or a compressor housing or a turbine housing of the turbocharger has the following steps: providing the housing to be worked, filling at least one hollow space of the housing to be worked with an incompressible fluid; and building-up a fluid pressure in the respective hollow space filled with the incompressible fluid, at least locally deforming plastically a housing portion of the housing limiting the respective hollow space of the housing at least in portions.

Abstract: A turbo compressor of an exhaust gas recirculation of an internal combustion engine, with a compressor housing, a compressor rotor, a shaft that is coupled to the compressor rotor and mounted in the compressor housing, a piston ring seal to prevent an exhaust gas blow-by flow in the direction of bearings, and a labyrinth seal, which seen in the direction of the exhaust gas blow-by flow, is positioned upstream of the piston ring seal.

Abstract: A radial compressor with a compressor rotor having moving blades and a compressor housing receiving a diffuser. The diffuser (13) delimits at least in sections a flow passage leading away from the moving blades of the compressor rotor and exclusively has support blades.

Abstract: A turbo compressor, with a shaft mounted in a housing to drive a compressor rotor and an electric motor, which drives the shaft. Bearings, via which the shaft is mounted in the housing, are designed as sliding bearings.

Abstract: An exhaust gas recirculation blower of an internal combustion engine, with a stator and a rotor. Assemblies of the stator and the rotor, which serve for conducting exhaust gas, consist of a material that is corrosion-resistant and erosion-resistant when exposed to an acidic atmosphere.

Abstract: A turbine for a turbocharger, for expanding a medium, with a turbine rotor, having a turbine housing with an insert piece, which runs radially outside of the adjoining blades of the turbine rotor. The insert piece at an upstream end, includes a first flange and a second flange at a downstream end. The insert piece, in a middle section, which extends between the first flange and the second flange, has an approximately constant thickness.

Abstract: An internal combustion engine, in particular gas engine, with multiple cylinders, wherein in the cylinders a mixture of charge air and a gaseous fuel can be combusted, with a first turbocharger, in which exclusively the charge air can be compressed, and with a second turbocharger, in which exclusively the gaseous fuel can be compressed.

Abstract: A turbocharger, with a turbine and compressor housing connected to a bearing housing. An inflow housing of the turbine and bearing housing are connected via a fastening device mounted to a flange of the inflow housing with a first section and partially overlaps a flange of the bearing housing with a second section. Between the inflow housing and the bearing housing, flanges of a nozzle ring and of a sealing cover are clamped. Adjoining surfaces contacting one another in a region of a first, second, and/or a third contact clamping region are hardened.

Abstract: A turbocharger, has a turbine for expanding a first medium and a compressor for compressing a second medium. The turbine includes a turbine housing and a turbine rotor. The compressor includes a compressor housing and a compressor rotor coupled to the turbine rotor via a shaft. A bearing housing is arranged between the compressor and turbine housings in which the shaft is mounted. The turbine and bearing housings are connected via a fastening device mounted on a flange of the turbine housing with a first section and a second section that covers a flange of the bearing housing at least in sections. The fastening device is contoured curved on a surface of the second section facing the flange of the bearing housing.