Abstract: A compressor wheel arrangement for an electrically powered turbocharger, which can be connected with a rotor shaft of the turbocharger, having a compressor wheel made of a first metallic material, a shaft made of a second metallic material, which is tightly connected with the compressor wheel, at least one permanent magnet, which is non-rotatably arranged on the section of the shaft, in a ring-shaped area around a section of the shaft that extends behind the compressor wheel, between a casing and the shaft.

Abstract: Disclosed is a compressor. The compressor has a shaft with a compressor wheel attached to the shaft. The compressor also as an electric motor configured to drive the shaft, and also has an axial air bearing having a spring plate and a cover plate that are attached to a carrier with clips. The clips may be provided as sheet metal strips having a bent end section that is bent over by more than 90° in the shape of a hook.

Abstract: A compressor wheel arrangement for an electrically powered turbocharger, which can be connected with a rotor shaft of the turbocharger, having a compressor wheel made of a first metallic material, a shaft made of a second metallic material, which is tightly connected with the compressor wheel, at least one permanent magnet, which is non-rotatably arranged on the section of the shaft, in a ring-shaped area around a section of the shaft that extends behind the compressor wheel, between a casing and the shaft.

Abstract: A method for the maintenance or extension of the range of functions of a self-propelled machine, in particular a tandem roller, single-drum roller, rubber-wheeled roller, refuse compactor, road finisher, road milling machine, recycler or stabilizer, comprising the steps: generating a code which can be identified at a short distance by a control device of the machine either automatically by the control device after a maintenance interval has expired, or after a request by an operator for an extension of the range of functions, wherein the code contains information about at least one machine state that changes in the course of operation of the machine, identifying the code by a mobile terminal, transmitting the information contained in the code to a central server, transmitting a release code from the server to the mobile terminal, transmitting the release code to the control device of the machine, enabling the maintenance interval or the extension of the range of functions.

Abstract: A turbine arrangement for controlling a gas flow, in particular for a fuel cell (2) or for an internal combustion engine (3), and a charging device having such a turbine arrangement, is described, in which the gas flow supplied by an inlet (10) can be controlled by an adjustable slide bushing (48) covering an entry opening (43) to form a turbine wheel (38) arranged in a turbine housing (30) between a closed position and an open position, such that, in the closed position, the gas flow is throttled and, in the at least partially open position, a controllable proportion of the gas flow drives the turbine wheel (38) arranged on a shaft (22) of an electric engine (18) functioning as a generator for recuperating energy, wherein the slide bushing (48) releases a wall opening (64) in the turbine housing (30) above a predetermined value of the gas flow, such that a bypass channel emerges in order to guide gas flow past the turbine wheel (38) directly to an outlet opening (24).

Abstract: A turbine arrangement for controlling a gas flow, in particular for a fuel cell (2) or for an internal combustion engine (3), and a charging device having such a turbine arrangement, is described, in which the gas flow supplied by an inlet (10) can be controlled by an adjustable slide bushing (48) covering an entry opening (43) to form a turbine wheel (38) arranged in a turbine housing (30) between a closed position and an open position, such that, in the closed position, the gas flow is throttled and, in the at least partially open position, a controllable proportion of the gas flow drives the turbine wheel (38) arranged on a shaft (22) of an electric engine (18) functioning as a generator for recuperating energy, wherein the slide bushing (48) releases a wall opening (64) in the turbine housing (30) above a predetermined value of the gas flow, such that a bypass channel emerges in order to guide gas flow past the turbine wheel (38) directly to an outlet opening (24).

Abstract: A method for producing a coil of a compressor (1) which can be electrically driven, a coil which is produced in accordance with this method, and a stator and a compressor which can be electrically driven. The production process for the coil includes the steps of: producing (100) a first winding (101) of the coil (12), producing (200) a second winding (102) of the coil (12), and compacting (300) the first winding (101) and the second winding (102) by virtue of an external action of force. A cross-sectional area (111, 112, 111?, 112?) of a wire of the first winding (101) and of the second winding (102) is deformed.

Abstract: A charging apparatus (20) for a combustion engine, having a compressor (1) which has a compressor housing (2) in which a compressor wheel (3) is arranged, the compressor wheel being mounted on one end (4) of a rotor shaft (5), and which has a compressor housing rear wall (6); and having an electric motor (7) which has a stator winding (12) which surrounds a magnet (11), which is arranged on the rotor shaft (5), on the outside. The stator winding (12) is an iron-free stator winding, and the electric motor (7) is a brushless DC motor.

Abstract: A supercharging device for an internal combustion engine, in particular for a vehicle, with a compressor having a compressor housing and having a compressor space in which a compressor wheel is arranged, an electric motor having a rotor and a stator, a motor housing having a motor space for accommodating the rotor and the stator, and a fluid-conducting connection from the compressor space into the motor space in order to permit pressure equalization between the compressor space and the motor space.

Abstract: A supercharging apparatus (20) for a combustion engine (21) having an electrically drivable compressor (1), which has a compressor housing (2) in which a compressor wheel (3) is arranged, which compressor wheel is fastened on one end (4) of a rotor shaft (5), and which has a compressor housing rear wall (6), which is arranged behind the compressor wheel (3) and closes the compressor housing (2); an electric motor (7); and a stator winding (12), which has a line (21) formed from a multiplicity of litz wires (22, 23, 24). The litz wires (22, 23, 24) of the line (21) have a first degree of twisting in an end winding region (25) of the stator winding (12) and have a second degree of twisting in a magnetically active section (I, II, III, IV). The first degree of twisting is higher than the second degree of twisting.

Abstract: An air feed device (1) for a fuel cell, having a shaft (2); a compressor wheel (4) fastened to one of the ends (5, 20) of the shaft (2), a bearing arrangement (6, 7, 8) arranged in a bearing housing (9) for mounting the shaft (2), and an electric motor (10) for driving the shaft (2), which electric motor is arranged in the bearing housing (9). The shaft (2) has two shaft bearing portions (11, 12) and a magnet portion (13) arranged between the shaft bearing portions (11, 12), forming the rotor of the electric motor (10). The shaft bearing portions (11, 12) and the magnet portion (13) are centered relative to one another by means of a centering arrangement (12A, 13F) which engages on an outer edge (A), the shaft bearing portions (11, 12) and the magnet portion (13) bearing in each case axially against one another.

Abstract: An exhaust-gas turbocharger (1) having a turbine (2) which has a turbine wheel (3) surrounded by an inflow duct (4), and having a VTG cartridge (5), which VTG cartridge has a disk (6) and a vane bearing ring (7), which delimit the inflow duct (4), and which VTG cartridge has a multiplicity of vanes (8) which are arranged in the inflow duct (4) and which are mounted in the vane bearing ring (7) by way of rotatable vane shafts (9), which vane shafts are connected to vane levers (10), the lever heads (11) of which engage into associated grooves (12) in an adjusting ring (13) which surrounds the vane bearing ring (7) on the outside. At least one min-flow stop (25, 26) has, on an outer surface (31), a laser-cut portion (32).

Abstract: An exhaust-gas turbocharger (1) having a turbine (2) which has a turbine wheel (3) surrounded by an inflow duct (4), and having a VTG cartridge (5), which VTG cartridge has a disc (6) and a vane bearing ring (7), which delimit the inflow duct (4), and which VTG cartridge has a multiplicity of vanes (8) which are arranged in the inflow duct (4) and which are mounted in the vane bearing ring (7) by way of rotatable vane shafts (9), which vane shafts are connected to vane levers (10), the lever heads (11) of which engage into associated grooves (12) in an adjusting ring (13) which surrounds the vane bearing ring (7) on the outside; and having a radial bearing between the adjusting ring (13) and the vane bearing ring (7). Two min-flow stops (25, 26) are arranged, with a selectable angular spacing (?) with respect to one another, on the vane bearing ring (7).

Abstract: A bearing arrangement (28) having at least one radial air bearing (1) and/or having an axial air bearing (15?). The radial air bearing (1) has an inner annular bearing plate (7) and a spring plate (10) which surrounds the bearing plate (7) at the outside. The bearing plate and spring plate being formed as a single-piece component.

Abstract: A supercharging device for an internal combustion engine, in particular for a vehicle, with a compressor having a compressor housing and having a compressor space in which a compressor wheel is arranged, an electric motor having a rotor and a stator, a motor housing having a motor space for accommodating the rotor and the stator, and a connection from the compressor space into the motor space in order to permit pressure equalization between the compressor space and the motor space.

Abstract: An exhaust-gas turbocharger (1) having a turbine (2), which has a turbine wheel (3) surrounded by an intake duct (4), and having a VTG cartridge (5), which has a disk (6) and a vane bearing ring (7), which delimit the intake duct (4), and which has a plurality of vanes (8), which are arranged in the intake duct (4) and are mounted in the vane bearing ring (7) by way of rotatable vane shafts (9), which are connected to vane levers (10), the lever heads (11) of which engage into associated grooves (12) in a unison ring (13), which surrounds the vane bearing ring (7) on the outside, and which has an adjusting lever (14) which is operatively connected to an adjusting shaft (15) in order to transmit an adjusting torque to the unison ring (13). The adjusting lever (14) is of planar configuration.

Abstract: A VTG cartridge (1, 2) of an exhaust-gas turbocharger (2), with a blade bearing ring (3), and a disk (4), which is spaced apart from the blade bearing ring (3) and together with the latter delimits a hot-gas passage (5). The disk (4) is constructed from at least two layers (6, 7, 6?, 7?), which bear loosely against one another in the assembled state of the disk (4).

Abstract: A variable turbine geometry (VTG) exhaust-gas turbocharger in which guide vanes are adjusted by means of a unison ring, the structure of which has a simpler and thus more cost-effective design. The number of components is reduced, for example for rollers on pins as are provided in the case of known bearings. A very beneficial relationship between friction radius and rolling radius in the given installation space is obtained.

Abstract: An exhaust-gas turbocharger (1) having a turbine (2), with a turbine wheel (3) surrounded by an intake duct (4), and a VTG cartridge (5), with a washer (6) and a vane bearing ring (7), which delimit the intake duct (4), and with a plurality of vanes (8), arranged in the intake duct (4) and mounted in the vane bearing ring (7) by way of rotatable vane shafts (9), which are connected to vane levers (10), the lever heads (11) of which engage into associated grooves (12) in a unison ring (13), which surrounds the vane bearing ring (7); and having a radial bearing between the unison ring (13) and the vane bearing ring (7). The vane levers (10) for forming the radial bearing are in the form of cam levers, the lever heads (11) of which are supported in the grooves (12).

Abstract: A turbocharger (1) with variable turbine geometry (VTG) having a guide grate (18) which surrounds a turbine wheel (4) radially at the outside, which has an adjusting ring (5) operatively connected to the guide blades (7) via associated blade levers (20) which are fastened to blade shafts (8) at one of the ends thereof. Each blade lever (20) has a lever head (23) which can be placed in engagement with an associated engagement recess (24), which has a base wall (26), of the adjusting ring (5), and which has a stop (25) at least for setting the minimum throughflow through the nozzle cross sections formed by the guide blades (7). The stop is a first support point (25) on the base wall (26), wherein, in the minimum throughflow position, the lever head (23) makes contact, via a wall surface (27) facing toward the base wall (26), with said first support point.