Abstract: A drive train unit for a hybrid vehicle includes an input shaft arranged for rotationally fixed attachment to an output of a transmission, an output shaft, an electric machine with a rotor, a clutch, and an actuating unit operatively connected to the clutch. The actuating unit has an actuator and an actuating bearing, displaceable by the actuator. The clutch may be a separating clutch operatively inserted between the rotor and the input shaft, or a friction clutch operatively inserted between the input shaft and the output shaft. The clutch may be a self-intensifying clutch with a leaf spring adjusted at a set angle relative to a reference plane oriented perpendicular to an axis of rotation such that, in a driving direction of a first clutch component, a first friction element is applied to a second friction element with an additional axial force.

Abstract: A first clamping part and a second clamping part, which are movable relative to one another and to a base. A spring fixed between the first and second clamping parts. The spring applies force to the first and second clamping parts in a direction of the reciprocal movement thereof. A first locking part detachably locks the first and second clamping parts to each other when the spring is tensioned. A second locking part detachably locks the second clamping part to the base. The locking parts intermesh by forming a joint with limited motion.

Abstract: A spring configured to compress, expand, and provide a force is provided that includes a first ring, a second ring, a third ring, a first plurality of rolling elements arranged between the first and second rings, and a second plurality of rolling elements arranged between the first and third rings. When the spring is compressed, the first ring is configured to be elastically deformed in tension in a radially outwardly direction, and the second and third rings are configured to be elastically deformed in compression in a radially inwardly direction.

Abstract: A method actively dampens a start-up resonance of a torsional damper when starting an internal combustion engine. The torsional damper (4) is fixed between an internal combustion engine (1) and a secondary side (5) of a torsional elasticity, and the internal combustion engine (1) is started using a starter generator (3) arranged on a side of the internal combustion engine (1) counter to the torsional elasticity. A counter excitation is applied to a torque generated by the starter generator (3) when the internal combustion engine (1) is started, which counter excitation is modulated on the basis of a parameter of the internal combustion engine (1) which changes when the internal combustion engine (1) is being started.

Abstract: The disclosure proposes a tappet with a housing which is composed of a drive-side and an output-side section. The drive-side section, at its outer end, has a roller and the output-side section, at its outer end, has a contact area for a follower part. The separate sections are axially spaced apart from one another and are connected to one another by a central rod piece.

Abstract: A pulley decoupler for a drive train of a motor vehicle is disclosed for eliminating or reducing rotation-related irregularities transmitted by a crankshaft. The pulley decoupler comprises a pulley hub, an arc spring flange, and a torsional vibration damper flange of a torsional vibration damper. In embodiments, the pulley hub, the arc spring flange, and the torsional vibration damper flange are configured to be non-rotatably mounted on a crankshaft by at least one crankshaft screw. The pulley hub has an outer lateral surface region on which both the torsional vibration damper flange and the arc spring flange are received and on which they are configured to be non-rotatably mounted.

Abstract: An assembly secures the axial position of a sun gear of a planetary gearing stage on a rotor shaft of an electrical machine. The sun gear has an end section that is stepped radially outward on the inner diameter and is axially secured on the rotor shaft by means of at least one securing ring. At least one securing element is provided to secure against the centrifugal forces acting on the securing ring during rotation of the rotor shaft. The securing element is inserted into the end section on the sun gear and is at least partially pushed over the securing ring and radially secures the same.

Abstract: A cage for a ball bearing is optimized for high-speed applications. To reduce weight, the cage is formed by a number of conical blades which collectively form an “X” shape. To add rigidity, a number of gussets are placed between the blades at various circumferential locations. The light weight reduces the centrifugal forces for a given diameter and rotational speed. The rigidity permits the cage to withstand the centrifugal forces without excessive deflection or stress.

Abstract: A sealing device and a sealing arrangement which creates an improved outer seal in front of the sealing lips, for example, wherein the outer seal can be used in a confined space and affords an enhanced sealing effect for a low coefficient of friction and/or ease of fitting

Abstract: A torque converter, including: a cover arranged to receive a rotational torque; an impeller including an impeller shell connected to the cover; a turbine including a turbine shell; a lock-up clutch including a piston plate; an output element arranged to non-rotatably connect to an input shaft of a transmission; and a flow control assembly including a seal plate defining a through-bore. The cover, the flow control assembly, and the piston plate define, at least partly, a release pressure chamber. The cover, the impeller shell, the piston plate, and the flow control assembly define, at least partly, an apply pressure chamber. In a clutch closed mode of the two-pass torque converter: the lock-up clutch is arranged to transmit the rotational torque to the output element; and a fluid in the apply pressure chamber is arranged to flow through the through-bore and into the release pressure chamber.

Abstract: A method for producing bearing components includes providing a first bearing component, a second bearing component, a first production line, and a second production line. The first production line has a first grinding machine, a first honing machine, a first measuring unit, and a first conveyor unit. The second production line has a second grinding machine, a second honing machine, and a second conveyor unit. The method also includes grinding and honing the first bearing component, measuring a first dimension of the first bearing component, grinding and honing the second bearing component, and combining the first bearing component and the second bearing component to form a roller bearing or a slide bearing. The first production line and the second production line are operated in a synchronized manner such that the second grinding machine or the second honing machine is operated under closed-loop control using the first dimension.

Abstract: A method of assembling a clutch includes assembling a wedge chain by connecting a plurality of wedges together with links such that the wedges are movable relative to each other, and wrapping the wedge chain around an inner race. The method further includes connecting an end one of the links to an end one of the wedges to secure the chain to the inner race. The may also include installing the inner race into an outer race such that the wedge chain is radially disposed between the inner and outer races.

Abstract: A torque converter comprises a front cover, an impeller including an impeller shell fixed to the front cover, and a turbine including a turbine shell axially movable to frictionally engage the impeller shell such that the turbine shell forms a piston of a lock-up clutch. A reaction plate is positioned axially between the front cover and the turbine shell. A first pressure chamber is defined axially between the reaction plate and the turbine shell, a second pressure chamber is defined axially between the turbine shell and the impeller shell, and a third pressure chamber is defined axially between the reaction plate and the front cover. An output hub includes a first bore and a second bore radially offset from each other, wherein the first bore is in fluid communication with the first pressure chamber and the second bore is in fluid communication with the third pressure chamber.

Abstract: An electrical motor includes a housing, a stator seated in the housing, wherein the stator includes a plurality of stator teeth which extend in the radial direction toward the rotor, a yoke that connects the stator teeth is arranged in such a way that a plurality of first clearances are formed between the housing and the yoke and a plurality of second clearances are formed between the yoke and a free end of the stator teeth, and a coolant guide in contact with at least one axial lateral surface of the yoke, wherein the stator is in interlocking contact with the inner side of the housing.

Abstract: Planetary roller screw having a threaded spindle, and having a nut element arranged on the threaded spindle, and having planets arranged distributed around the periphery of the threaded spindle, which mesh on one side with the threaded spindle and on the other side with the nut element, which is rotatably mounted in both axial directions in each case by means of a first bearing on a rotationally driven planet carrier which receives the planets and is rotatably mounted on a housing by means of a second bearing. The planet carrier has a sleeve encompassing the nut element, at the axial ends of which a flange respectively having a first bearing seat of the first bearing and a second bearing seat of the second bearing is arranged, the flanges being connected with play to one another by means of the sleeve in a rotationally fixed manner and axially with actuating play.

Abstract: A balance shaft is proposed that includes: i) an unbalance shaft having an unbalance section and an adjacent bearing pin having a cylindrical partial circumference which is oriented towards the shaft imbalance; ii) a bearing ring which surrounds the bearing pin and bears against the cylindrical partial circumference and delimits a free space with a bearing pin back radially opposite thereto; and, iii) a clamping element which is clamped in the free space and clamps the bearing ring radially against the cylindrical partial circumference. The clamping element is intended to secure the bearing ring against axial sliding on both sides on the bearing pin, and the clamping element is connected in an axially interlocking manner to the unbalance shaft on one side and to the bearing ring on the other side.

Abstract: A torque converter comprises a front cover, an impeller including an impeller shell fixed to the front cover, and a turbine including a turbine shell axially movable to frictionally engage the impeller shell such that the turbine shell forms a piston of a lock-up clutch. A reaction plate is positioned axially between the front cover and the turbine shell. A first pressure chamber is defined axially between the reaction plate and the turbine shell, a second pressure chamber is defined axially between the turbine shell and the impeller shell, and a third pressure chamber is defined axially between the reaction plate and the front cover. An output hub includes a first bore and a second bore radially offset from each other, wherein the first bore is in fluid communication with the first pressure chamber and the second bore is in fluid communication with the third pressure chamber.

Abstract: A rolling element for a roller bearing. The rolling element may include a metal substrate having a surface layer. A portion of the surface layer may include a hardened nitrided layer. A diamond-like carbon (DLC) coating may be bonded directly on at least a portion of the hardened nitrided layer.

Abstract: A centrifugal pendulum absorber, including: a first pendulum mass; a second pendulum mass; a center plate axially located between the first pendulum mass and the second pendulum mass, connected to the first pendulum mass and the second pendulum mass, and arranged to receive rotational torque; a first resilient bumper axially located between the first pendulum mass and the second pendulum mass, and connected to the first pendulum mass and the second pendulum mass; and a first radial travel stop connected to the first pendulum mass or to the second pendulum mass, located radially outward of the first resilient bumper, radially aligned with at least a portion of the first resilient bumper, and free of contact with the first resilient bumper when the centrifugal pendulum absorber is at rest.

Abstract: A clutch device for a drive train of a motor vehicle includes a torsional vibration damper with an output side, a disconnect clutch with a clutch component, and a fastening unit releasably connecting the disconnect clutch to the torsional vibration damper. The fastening unit includes a first toothing region fixed on the clutch component, a second toothing region fixed on the output side and positively rotationally connected with the first toothing region, and a clamping element. The clamping element is arranged to preload the first toothing region relative to the second toothing region in a circumferential direction with a preloading force, and preload the output side relative to the clutch component with an axial contact pressure.