Abstract: The disclosure relates to a rolling bearing for a medical or cosmetic instrument including a bearing inner ring revolving around an axis of rotation; and a stationary bearing outer ring, which concentrically encloses the bearing inner ring; wherein a bearing gap is formed between the bearing inner ring and the bearing outer ring and a plurality of rolling bodies is arranged in succession in circumferentially in the bearing gap, the bearing inner ring being mounted in the bearing outer ring; and wherein the rolling bodies are arranged rolling on the bearing inner ring and the bearing outer ring, the bearing gap being covered in the axial direction by a cover disk, which forms a radial gap with the bearing inner ring extending in the axial direction, the radial gap has a gap length and a gap height, the gap length being at least 25% of the rolling body height.

Abstract: The disclosure relates to a rolling bearing for a medical or cosmetic instrument having a bearing inner ring revolving around an axis of rotation and a stationary bearing outer ring, which concentrically encloses the bearing inner ring; wherein in the radial direction to the axis of rotation, a bearing gap is formed between the bearing inner ring and the bearing outer ring and a plurality of rolling bodies is arranged in succession in the circumferential direction in the bearing gap, via which the bearing inner ring is mounted in the bearing outer ring; wherein the rolling bodies are arranged rolling on the bearing inner ring and the bearing outer ring and have a rolling body height in the radial direction; and the bearing gap is covered in the axial direction by a cover disk, which is fastened on the bearing outer ring or on a housing accommodating the bearing outer ring or is integrally formed with the housing or the bearing outer ring, and which jointly with the bearing inner ring forms a radial gap ext

Abstract: A motor vehicle drive train, comprising a drive engine including a drive shaft and generating an exhaust stream; a power turbine configured to convert exhaust energy into drive power and capable to drive the drive shaft or an assembly downstream of the driveshaft in the drive power flow with drive power of the drive turbine; a hydrodynamic retarder including a driven bladed primary wheel and a bladed secondary wheel that is stationary or driven in the opposite direction of the primary wheel, the primary wheel and the secondary wheel forming a working chamber that can be filled with a working medium capable of braking the primary wheel hydrodynamically by torque transmission from the primary wheel to the secondary wheel by way of a working medium circuit; and a mechanical disconnect clutch capable of disengaging the power turbine and the primary wheel of the hydrodynamic retarder from the drive power flow.

Abstract: A method for control of a pressurized air supply system for a motor vehicle. In a supply condition, the air compressor is driven by the drive motor and connected to a compressed air system of the motor vehicle such that compressed air is supplied to the compressed air system. In a non-supply condition, the compressor is not driven and/or connected to the compressed air system. The switching of the supply or non-supply condition results from a comparison of at least one switch pressure value with a pressure in the compressed air system and the topography of the stretch of road on which the vehicle is travelling, which includes the profile of the path which the vehicle must cover within a period of time and/or path distance to a given destination.

Abstract: A hydrodynamic machine, and especially a hydrodynamic coupling, for a turbine compound system includes (a) a bladed primary wheel and a bladed secondary wheel which together form an operating space which is filled or can be filled with operating medium, and (b) a housing which encloses the primary wheel and the secondary wheel and which is manufactured from sheet metal. The housing is manufactured from at least two separate sheet metal components which are placed on the primary wheel and/or the secondary wheel, are aligned with each other at a joint abutment location, and are welded together. In the area of the welded joint abutment, a relief which is open toward the joint abutment is provided and which extends along the joint abutment in the surface of the primary wheel and/or the secondary wheel.

Abstract: A method for regulating a compressed air supply system of a motor vehicle, the system having a driving engine for driving the motor vehicle, which can be switched via a switchable hydrodynamic coupling to a driven connection with an air compressor, so that the air compressor feeds a compressed air system via an air delivery side.

Abstract: A turbo-compound system having a crankshaft driven by an internal combustion engine; having an exhaust gas turbine arranged in the flow of exhaust gas of the internal combustion engine; having a hydrodynamic coupling, having a primary impeller and a secondary impeller, together forming a working chamber which may be filled or is filled with a working medium, which is arranged in a driven connection between the crankshaft and the exhaust gas turbine in such a way that, when the working chamber of the hydrodynamic coupling is filled, for the exhaust gas turbine driven by the exhaust-gas flow, drive power is transmitted from the exhaust gas turbine to the crankshaft.

Abstract: The invention relates to a hydrodynamic coupling comprising an impeller (1), which propels a drive machine and a turbine wheel (2), which propels a drive machine. The turbine wheel and its rotationally fixed coupling shell (4) form a coupling housing (5). A centrifugal force valve (6) comprising a valve body (6.1) that is actuated using centrifugal force, is located in the outer peripheral region of the coupling housing, said valve being mounted in an outlet (7) for working medium from the working chamber, in such a way that the valve body essentially or completely seals the outlet when the centrifugal force valve is closed and releases said outlet when the valve is open, allowing the working medium to flow out. The valve body of the centrifugal force valve is supplied with working medium exclusively on its radial inner face and its radial outer face is subjected exclusively to the action of an elastic, mechanical pressure element (6.2), which acts in the closing direction of the centrifugal force valve.

Abstract: The invention relates to a propulsion power transmission device having a first interface (1) and a second interface (2). According to the invention, a hydrodynamic clutch is mounted in the driving connection between the first interface and the second interface and a first gear train (4) and a second gear train (5) are mounted parallel to each other in the driving connection, in series with the hydrodynamic clutch, the second gear train (5) causing a reversal in the direction of rotation in relation to the first gear train (4) at one of the two interfaces (1, 2). The propulsion power transmission device of the invention is characterized by the following features: the hydrodynamic clutch has two separate working chambers (3.1, 3.2), which can be independently filled with and drained of a working medium in order to transfer torque from one bladed primary wheel (3.3, 3.4) to at least one bladed secondary wheel (3.

Abstract: The invention relates to a method for regulating the maximum speed of a working machine (12), in particular an air compressor in a vehicle. Said working machine is driven by means of a motor (10), using a hydrodynamic coupling (11), which comprises a working chamber (3) that is partially or fully filled with a working medium for transmitting a torque from a drive side (11.1) equipped with an impeller (1) to a driven side (11.2) equipped with a turbine wheel (2).

Abstract: The invention relates to a hydrodynamic coupling, especially for a turbocompound system, comprising: a pump wheel; a turbine wheel which forms in combination with a pump wheel a working chamber which can be filled with a working medium. The hydrodynamic coupling in accordance with the invention is characterized in that a mechanical locking device is provided for connecting the pump wheel and the turbine wheel in a torsionally rigid manner, which locking device is in connection with a section of the coupling guiding a working medium such that it closes under a predetermined degree of filling of the working chamber.

Abstract: A hydrodynamic machine, and especially a hydrodynamic coupling, for a turbine compound system includes (a) a bladed primary wheel and a bladed secondary wheel which together form an operating space which is filled or can be filled with operating medium, and (b) a housing which encloses the primary wheel and the secondary wheel and which is manufactured from sheet metal. The housing is manufactured from at least two separate sheet metal components which are placed on the primary wheel and/or the secondary wheel, are aligned with each other at a joint abutment location and are welded together. In the area of the welded joint abutment, a relief which is open toward the joint abutment is provided and which extends along the joint abutment in the surface of the primary wheel and/or the secondary wheel.

Abstract: The invention relates to a method for optimizing engine braking in a drive unit, particularly used for motor vehicles, comprising an internal combustion engine consisting of a crankshaft, and an exhaust gas turbine which is connected to a crankshaft via a transfer device. A hydrodynamic coupling is arranged in the transfer device.

Abstract: The invention concerns a hydrodynamic coupling or a hydrodynamic brake with the following features: having an impeller and a turbine wheel, which together form a toroidal working chamber; the impeller sits on a driveshaft, and the turbine wheel sits on a driven shaft; having a housing, which encloses the impeller and, together with the impeller, forms a retaining space, which is conductively connected to the working chamber; having an inlet and an outlet for the filling and emptying of the working chamber; the driveshaft supports a dynamic pressure pump, which projects into the retaining space and which can be placed in rotation around the driveshaft (20); the dynamic pressure pump has an inlet in its radial outer region and is connected to the outlet by its radial inner region; a connection that is resistant to rotation can be produced and/or released again selectively between the dynamic pressure pump and the driveshaft.

Abstract: The invention relates to a hydrodynamic coupling comprising an impeller (1), which propels a drive machine and a turbine wheel (2), which propels a drive machine. The turbine wheel and its rotationally fixed coupling shell (4) form a coupling housing (5). A centrifugal force valve (6) comprising a valve body (6.1) that is actuated using centrifugal force, is located in the outer peripheral region of the coupling housing, said valve being mounted in an outlet (7) for working medium from the working chamber, in such a way that the valve body essentially or completely seals the outlet releases said outlet when the valve is open, allowing the working medium to flow out. The valve body of the centrifugal force valve is supplied with working medium exclusively on its radial inner face and its radial outer face is subjected exclusively to the action of an elastic, mechanical pressure element (6.2), which acts in the closing direction of the centrifugal force valve.

Abstract: The invention relates to a method for control of a pressurised air supply system for a motor vehicle (10), said system comprising a drive motor (1) for driving the motor vehicle, which drives an air compressor (3) by means of a drive connection (2), or said drive connection for driving the air compressor may be switched on. Said method comprises the following method steps: in a supply condition, the air compressor is driven by the drive motor and connected with the air supply side (3.

Abstract: The invention relates to a turbo-compound system having a crankshaft driven by an internal combustion engine; having an exhaust gas turbine arranged in the flow of exhaust gas of the internal combustion engine; having a hydrodynamic coupling, comprising a primary impeller and a secondary impeller, together forming a working chamber which may be filled or is filled with a working medium, which is arranged in a driven connection between the crankshaft and the exhaust gas turbine in such a way that, when the working chamber of the hydrodynamic coupling is filled, for the exhaust gas turbine driven by the exhaust-gas flow, drive power is transmitted from the exhaust gas turbine to the crankshaft. The turbo-compound system according to the invention is characterized in that a switching means is provided for reversing the direction of rotation of the primary impeller or of the secondary impeller of the hydrodynamic coupling.

Abstract: The invention relates to a propulsion power transmission device having a first interface (1) and a second interface (2). According to the invention, a hydrodynamic clutch is mounted in the driving connection between the first interface and the second interface and a first gear train (4) and a second gear train (5) are mounted parallel to each other in the driving connection, in series with the hydrodynamic clutch, the second gear train (5) causing a reversal in the direction of rotation in relation to the first gear train (4) at one of the two interfaces (1, 2). The propulsion power transmission device of the invention is characterized by the following features: the hydrodynamic clutch has two separate working chambers (3.1, 3.2), which can be independently filled with and drained of a working medium in order to transfer torque from one bladed primary wheel (3.3, 3.4) to at least one bladed secondary wheel (3.

Abstract: The invention relates to a method for optimizing engine braking in a drive unit, particularly used for motor vehicles, comprising an internal combustion engine consisting of a crankshaft, and an exhaust gas turbine which is connected to a crankshaft via a transfer device. A hydrodynamic coupling is arranged in the transfer device.

Abstract: A hydrodynamic machine with a turbo coupling comprising primary and secondary wheels together forming a torus shaped workspace, which can be filled with a working medium. A temperature-sensing device installed in a component, which rotates when the machine is operating, and sending a temperature —dependant signal. A stationary monitoring device connected to the temperature sensor in a remote query connection, and having means for creating a temperature measurement correction depending on the heating rate progression of the sensed temperature.