Abstract: An insulated bearing includes an outer ring, a plurality of rolling elements, and an insulating cap. The outer ring has an inner rolling surface and an outer spiral groove, the rolling elements are in rolling contact with the inner rolling surface, and the insulating cap is screwed onto the outer ring. The insulating cap has an inner spiral, complementary to the outer spiral groove. In an example embodiment, the outer spiral groove comprises a cross-section having a shape selected from the group consisting of a rectangle, a triangle, and a trapezoid. In an example embodiment, the outer spiral groove has between 2 and 4 revolutions. In an example embodiment, the outer spiral groove has a width of 4 millimeters or less.

Abstract: A blocking device for the recirculation loop in a fuel cell stack comprises a hydrogen inlet, a recirculation gas inlet, and a purge line. In order to dispense with the need for some valves, a recirculation loop blocking valve is provided which is switched by an upstream hydrogen switching valve, and a purge valve is integrated which is also configured as a pressure relief valve.

Abstract: A central release mechanism, in particular for a hydraulic release system of a clutch system of a motor vehicle, including a central release mechanism housing with an annular central release mechanism piston chamber in which a central release mechanism piston is received axially movably by a hydraulic liquid that can be supplied to the central release mechanism piston chamber. The central release mechanism has at least one central release mechanism piston seal which seals the central release mechanism piston with respect to the central release mechanism piston chamber, and the central release mechanism piston seal is arranged in the central release mechanism housing so as to be axially secured at least on one side by a securing ring, the securing ring being connectable to the central release mechanism housing by means of a bayonet connection.

Abstract: A cage assembly for a bearing includes a first cage half and a second cage half. The first cage half includes a first annular section with a first plurality of circumferentially spaced apertures for receiving a plurality of rolling elements, and a first cylindrical section arranged for positioning the cage assembly on a first shaft. The second cage half includes a second annular section with a second plurality of circumferentially spaced apertures for receiving the plurality of rolling elements, and a second cylindrical section arranged for positioning the cage assembly on a second shaft. In an example embodiment, the first cylindrical section or the second cylindrical section has an aperture for radial flow of a lubricant.

Abstract: A torsional vibration damper includes a rotational axis, an input part mounted about the rotational axis, an output part rotatable about the rotational axis to a limited extent relative to the input part; a spring device opposing rotation of the output part relative to the input part, a first cam mechanism, and a first intermediate element. The first intermediate element is arranged for radial displacement by the first cam mechanism when the output part rotates relative to the input part. The first intermediate element has a first intermediate element first part, and a first intermediate element second part. In an example embodiment, the damper includes a second cam mechanism and a second intermediate element arranged to be radially displaced by the second cam mechanism when the output part rotates relative to the input part. The spring device is arranged between the first intermediate element and the second intermediate element.

Abstract: A torque transfer device is provided, for a powertrain of a motor vehicle, comprising an electric motor having a stator and a rotor rotatable relative thereto. A control system is provided which can output a current pulse to the electric motor, wherein the current pulse effects a rotary motion of the rotor in a first direction of rotation and through a first angle of rotation and thus effects an induced voltage, which is received by the control system to determine the direction of rotation or the rotary position of the rotor in relation to the stator. The rotor is connected to a torsional vibration damper comprising a damper input and a damper output; rotatable in a limited manner in relation to the damper input, against the effect of energy storage elements, and the rotary motion of the rotor causes a relative rotation between the damper input and the damper output.

Abstract: An anti-roll bar assembly comprising a disconnect assembly element defining a first one of a male or female connector, and a shaft defining a second one of a male or female connector is disclosed. The disconnect assembly element and the shaft are fixed to each other via the male and female connectors without the need for any welding connection.

Abstract: A camshaft phaser is provided that includes a rotor, a stator, and a locking cover. The rotor is selectively locked to the stator via a locking assembly arranged within a locking bore of the rotor. Contaminant particles that enter a first locking end of the bore are exited out a second venting end of the bore via a contaminant particle exit pathway.

Abstract: The disclosure relates to a planetary roller screw having: a nut arranged on a threaded spindle and divided crosswise to a spindle axis into two nut parts; planetary rollers arranged between the threaded spindle and the nut distributed over the circumference, the planetary rollers intermeshing with the nut parts and with the threaded spindle; a rotatingly driven planetary roller carrier arranged on the threaded spindle, in pockets of which, arranged distributed over the circumference, the planetary rollers are mounted, held at a distance in the circumferential direction, so as to be rotatable about the planetary roller axis; and a housing in which the planetary roller carrier is rotatably mounted. A pre-loading device is provided in order to adjust an axial pre-load between the housing and the planetary rollers.

Abstract: During operation of a wet-running gearbox, vapours and/or air can arise in a housing of the gearbox, which can increase an internal pressure in the housing and thus can influence the operating safety of the gearbox. The problem addressed by the invention is that of creating a gearing unit, which is distinguished by an advantageous arrangement of a venting device. To this end, a gearing unit 1 for a drive assembly is specified having: a gearing device 4 for converting a drive torque of the drive assembly, the gearing device 4 having an input shaft 8, and the input shaft 8 defining a main axis H; a gearing housing 2 for accommodating the gearing device 4, the gearing housing 2 defining an accommodation space 3 for the gearing device 4; and a venting device 10 for venting the accommodation space 3, the venting device 10 being mounted on the gearing housing 2, wherein the venting device 10 is arranged coaxially with the main axis H and on an axial end face of the input shaft 8.

Abstract: A hybrid powertrain includes an output shaft, a combustion power section for providing a first torque, an electric power section for providing a second torque, and an output transmission for transmitting the first torque between the combustion power section and the output shaft and transmitting the second torque between the electric power section and the output shaft. The combustion power section includes an internal combustion engine with a combustion shaft for outputting the first torque, a generator with a generator shaft for converting the first torque into electric energy, and a variable belt transmission for variably translating the first torque. The belt transmission includes a combustion-side cone pulley pair with a first axially movable pulley arranged on a generator shaft side, an output-side cone pulley pair with a second axially movable pulley, and a belt for variably torque-transmittingly connecting the combustion-side cone pulley pair to the output-side cone pulley pair.

Abstract: A blocking device for a recirculation loop in a fuel cell stack comprises a hydrogen inlet and a recirculation gas inlet. In order to obtain an inexpensive blocking device for the recirculation loop, a recirculation loop blocking valve is provided, which is switched by an upstream hydrogen switching valve.

Abstract: An electric machine arrangement including an electric machine which is designed as a radial flux machine having an inner rotor and which has a stator and a rotor, and a transmission arrangement which can be driven by the rotor. The transmission arrangement being arranged, at least in regions, in a receiving space formed within the rotor. The transmission arrangement has a first sub-transmission designed as a reducing stage for reducing the rotational speed and a second sub-transmission designed as a differential gear.

Abstract: The disclosure relates to a method for operating an internal combustion engine. The internal combustion includes an intake manifold via which a cylinder can be supplied with fresh air, an inlet valve via which, when it is open, the fresh air can flow from the intake pipe into the cylinder, and a variable valve drive by means of which the opening duration or the relative timing of the inlet valve event is variable in relation to a crankshaft position. During a starting of the internal combustion engine, when the intake manifold pressure differs from the intake manifold desired pressure, a filling pilot control of the cylinder is undertaken by the variable valve drive by the fresh air supply being reduced in comparison to the fresh air supply at the intake manifold desired pressure. The disclosure further relates to a control device for an internal combustion engine that enables low-emission operation.

Abstract: A hydraulic assembly for an electrically operatable multi-gear axle drive train of a motor vehicle, including first and second clutch devices for actuating at least one gear selection device of the electrically operatable axle drive train and a central release mechanism having a first central release mechanism piston that is movable relative to a central release mechanism housing, rotationally fixed to a drive train housing, in a translational manner, and a second central release mechanism piston that is movable relative to the central release mechanism housing, rotationally fixed to the drive train housing, in a translational manner. The radially outer lateral surface of the central release mechanism housing has a groove into which a shell-like toothing element with an outer toothing is inserted and secured axially and for torque-transmission. The outer toothing engages into corresponding toothing rotationally fixed to the drive train housing.

Abstract: A method ascertains a characteristic variable of a clutch installed in a drive train of a vehicle for transmitting a transmission torque between a clutch input and a clutch output. A first electric motor is connected to the clutch input and to an internal combustion engine and can assume generator operation, during which it is driven by the internal combustion engine. A second electric motor is connected to the clutch output. The clutch input can have a first rotational speed and the clutch output can have a second rotational speed. The transmission torque during generator operation is ascertained by activating the clutch to adopt a slipping state and in doing so by setting a predefined rotational speed difference between the first and second rotational speed. The clutch input torque present at the clutch input is then ascertained and the transmission torque is determined depending on the clutch input torque.

Abstract: A bearing assembly is disclosed herein that is configured for use in a rubber boot arrangement. The bearing assembly includes an outer ring, an inner ring, a plurality of rolling elements supported between the outer ring and the inner ring, and a cage configured to retain the plurality of rolling elements. A thrust washer is provided that is configured to prevent wear, abrasion, or other damage to the bearing components. The thrust washer can be configured to be directly attached to any of the bearing components, such as the inner ring or the inner sleeve.

Abstract: A main bearing assembly for a wind turbine, which extends along an axis of rotation and has a main bearing unit having a bearing housing, the bearing unit being designed for fastening to an open machine support. The bearing housing is rotationally symmetrical and at least one fastening foot is provided, which is designed as a component which is independent of the bearing housing and is fastened to the bearing housing, and in the installed state the main bearing unit is fastened to the machine support with the aid of the at least one fastening foot.

Abstract: The disclosure relates to a method for controlling a cooling system of a first electrical machine within a drive train of a motor vehicle. The cooling system includes: i) a first closed coolant circuit having a first cooling fluid and a first fluid pump for conveying the first cooling fluid through the first coolant circuit and for cooling at least the first electrical machine, and ii) a control unit which is connected to the first fluid pump in order to control the pump speed.

Abstract: A torque converter assembly and a method of assembling torque converter components is disclosed herein. The torque converter can include a turbine and a secondary component configured to be connected to the turbine. The connection interface between the turbine and the secondary component can be provided solely via deformation of a portion of the turbine, such as an integrally formed flange, such that the turbine and the secondary component are connected with each other.