Abstract: The invention relates to a shaft-hub connection (1), particularly for mounting a rotor wheel on a shaft (10). The shaft-hub connection (1) comprises a shaft (10), a hub (20) and a filler material (30). The shaft (10) comprises an end section (11) on one end. A receiving region (21) is arranged in the hub (20). The end section (11) is arranged in the receiving region (21), with an intermediate layer of the filler material (30) positioned inbetween. The filler material (30) forms undercuts in the axial and rotational direction, in relation to the end section (11) and in relation to the receiving region (21), so as to create a positive embodiment of the shaft-hub connnection (1).

Abstract: The invention relates to a shaft-hub connection (1), particularly for mounting a rotor wheel on a shaft (10). The shaft-hub connection (1) comprises a shaft (10), a hub (20) and a filler material (30). The shaft (10) comprises an end section (11) on one end. A receiving region (21) is arranged in the hub (20). The end section (11) is arranged in the receiving region (21), with an intermediate layer of the filler material (30) positioned inbetween. The filler material (30) forms undercuts in the axial and rotational direction, in relation to the end section (11) and in relation to the receiving region (21), so as to create a positive embodiment of the shaft-hub connnection (1).

Abstract: An exhaust gas turbocharger for an internal combustion engine may include a rotor with a turbine wheel of a turbine, a compressor wheel of a compressor and a shaft. The shaft may be connected to the turbine wheel and to the compressor wheel in a rotationally fixed manner. A bearing cartridge may be included for mounting the rotor in a housing. The bearing cartridge may have an inner sleeve arranged on the shaft axially between the turbine wheel and the compressor wheel with respect to an axis of rotation and an outer sleeve arranged coaxial thereto. The outer sleeve may be rotatably mounted on the inner sleeve via at least one rolling body. At least two damping rings may be included which are coaxially arranged on the outer sleeve axially spaced from one another and supported on a respective bearing section of the housing.

Abstract: An exhaust gas turbocharger may include a rotor mounted in a bearing housing via a rolling bearing. The rolling bearing may include an outer shell, an inner shell and rolling bodies running therebetween. At least one annular and vibrational noise absorbing diaphragm spring element may be arranged between the outer shell of the rolling bearing and the bearing housing. The diaphragm spring element may mount the rotor in radial direction and axial direction in a vibration-insulating manner with respect to the bearing housing.

Abstract: The turbocharger according to the invention has a rotor with a compressor wheel as well as a turbine wheel that is connected in a rotationally-fixed manner to the compressor wheel by means of a common shaft. The compressor wheel and the shaft are form-fittingly tensioned with one another, wherein respectively at least one or two torque-transmitting contact surfaces, which lie one atop the other, between components force-fittingly tensioned with one another, is provided with a friction-increasing coating.

Abstract: An exhaust gas turbocharger for an internal combustion engine may include a rotor with a turbine wheel of a turbine, a compressor wheel of a compressor and a shaft. The shaft may be connected to the turbine wheel and to the compressor wheel in a rotationally fixed manner. A bearing cartridge may be included for mounting the rotor in a housing. The bearing cartridge may have an inner sleeve arranged on the shaft axially between the turbine wheel and the compressor wheel with respect to an axis of rotation and an outer sleeve arranged coaxial thereto. The outer sleeve may be rotatably mounted on the inner sleeve via at least one rolling body. At least two damping rings may be included which are coaxially arranged on the outer sleeve axially spaced from one another and supported on a respective bearing section of the housing.

Abstract: An exhaust gas turbocharger may include a rotor mounted in a bearing housing via a rolling bearing. The rolling bearing may include an outer shell, an inner shell and rolling bodies running therebetween. At least one annular and vibrational noise absorbing diaphragm spring element may be arranged between the outer shell of the rolling bearing and the bearing housing. The diaphragm spring element may mount the rotor in radial direction and axial direction in a vibration-insulating manner with respect to the bearing housing.

Abstract: An electromagnetic pressure regulating valve has a valve portion for conducting and regulating the pressure of an operating medium, such as oil, a magnet portion for actuating the valve portion for regulating the pressure of the operating medium and having a magnet housing, in which a magnet core is located that as needed exerts magnetic force on an armature, located in the magnet housing, a spring with a spring force generating a pressure activation threshold to be overcome upon regulation and located between the armature and an adjusting ball that is located in a pole piece of the magnet housing, and the spring has regions of different diameter.

Abstract: Delivery units are already known which have a drive rotor and an output rotor driven by the drive rotor, which are supported in a housing, interact in a meshing manner through a spur toothing in each case and draw fluid through at least one inlet and push said fluid out through an outlet, wherein the inlet and the outlet are separated from each other by two separating webs. In order to control the flow rate through the delivery unit, a rotational speed control, a bypass control, or, for gases, a suction throttling, for example, can be carried out. A rotational speed control is energy efficient, but very expensive, because an electric motor must be used, the rotational speed of which can be controlled. In the bypass control, the fluid is delivered from the outlet through a bypass back to the inlet, which however is energetically unfavorable and connected to hydraulic losses.

Abstract: The turbocharger according to the invention has a rotor with a compressor wheel as well as a turbine wheel that is connected in a rotationally-fixed manner to the compressor wheel by means of a common shaft. The compressor wheel and the shaft are form-fittingly tensioned with one another, wherein respectively at least one or two torque-transmitting contact surfaces, which lie one atop the other, between components force-fittingly tensioned with one another, is provided with a friction-increasing coating.

Abstract: An electromagnetic pressure regulating valve has a valve portion for conducting and regulating the pressure of an operating medium, such as oil, a magnet portion for actuating the valve portion for regulating the pressure of the operating medium and having a magnet housing, in which a magnet core is located that as needed exerts magnetic force on an armature, located in the magnet housing, a spring with a spring force generating a pressure activation threshold to be overcome upon regulation and located between the armature and an adjusting ball that is located in a pole piece of the magnet housing, and the spring has regions of different diameter.