Abstract: A clutch unit for a powertrain of a motor vehicle is disclosed, comprising a torque input component acting as a drive element, a torque output component acting as an output element, being connectable so as to transmit a torque to the torque input component via a clutch that can be shifted using friction elements, and with a torsional vibration damper having two masses damped relative to one another to reduce rotational irregularities, which is arranged between the torque input component and the torque output component, at least one of the two masses of the torsional vibration damper being simultaneously designed as a support for a friction partner. The disclosure further relates to a hybrid module comprising a first drive machine, the output shaft of which can be connected to an output shaft of a second drive machine or a transmission input shaft via such a clutch unit.

Abstract: A wire harness, including: a plurality of wire groups that each include a plurality of wires; a plurality of tubular first flexible shields that each encase a different one wire group of the plurality of wire groups; a tube that is made of a metal and into which drawn-out portions of the wires, which are drawn out from the first flexible shields, are inserted; and a tubular second flexible shield that bunches together and encases the drawn-out portions of the wires at positions thereof that are outside of the tube, and is electrically connected to the first flexible shields and the tube.

Abstract: A power take off includes a housing, an input mechanism that is supported in the housing and is adapted to be rotatably driven by a source of rotational energy, and an output mechanism that is supported in the housing and is rotatably driven by the input mechanism, the output mechanism being adapted to rotatably drive a rotatably driven accessory. The power take off further includes a two piece damping assembly that minimizes the transmission of torque transients from the input mechanism to the output mechanism. The two piece damping assembly may be an input cluster gear assembly that includes a first gear portion and a second gear portion that are supported for rotational movement relative to one another. The two piece damping assembly may also be part of a clutch assembly for selectively the output mechanism to be rotatably driven by the input mechanism.

Abstract: An isolator is provided for use with an engine and in particular an engine that is assisted or started by MGU (Motor-Generator Unit) or a motor through an endless drive member. It comprises a double acting spring system for isolating crankshaft pulley from torsion vibration at the crankshaft, and in extreme conditions, such as during engine startup and accelerations or decelerations of the engine crankshaft relative to the pulley and when isolator operates in an “engine-driven” mode with the engine crankshaft is driven by the belt.

Abstract: A damping dental post key configured to implant a dental root post for restoration of a tooth is described. The dental post key includes a body for handling and a post carrier having a key shape with respect to a head portion of the dental root post. During implantation of the dental post, rotation of the body compresses a set of springs in contact with the post carrier reducing a reaction force to a tooth root. In this way a limited force will be applied and a root fracture can be prevented. Further, the dental post key can be configured to have a fixed movement in a counterclockwise direction to remove the dental post and a free quarter-cycle movement with effort in a clockwise direction.

Abstract: An isolator is provided for use with an engine and in particular an engine that is assisted or started by MGU (Motor-Generator Unit) or a motor through an endless drive member. It comprises a double acting spring system for isolating crankshaft pulley from torsion vibration at the crankshaft, and in extreme conditions, such as during engine startup and accelerations or decelerations of the engine crankshaft relative to the pulley and when isolator operates in an “engine-driven” mode with the engine crankshaft is driven by the belt.

Abstract: This device comprises two coaxial elements mounted rotatably with respect to a spring, and two seats for positioning the spring. Each seat comprises a dorsal pivot projection configured in two coaxial elements. The pivot projection is delimited by a cylinder portion whose section is a first circular arc whose tangent forms an angle ? with the axis of the spring. The section of each receptacle is formed by a second circular arc, having the same center and radius of curvature as the first circular arc, the tangent of which forms with the axis of the spring an angle ? greater than ?. The pivot axes are parallel to one another at a distance L, and are included in a plane located at a distance R from the rotation axis. The maximum deflection angle of the device is ?. ? is within the range [arctg(L/2R)??/8 to arctg(L/2R+?].

Abstract: A power transmission device includes an input rotary member having a pressing portion, and an output rotary member having a receiving portion to be pressed by the pressing portion. The input rotary member forces the output rotary member to rotate when resilient members disposed between the input rotary member and the output rotary member are deformed by predetermined amounts.

Abstract: A power take off (PTO) gear including: an input flange including an outwardly extending protrusion; a ring gear; and a piston including an inwardly extending protrusion and a circumferential end. The PTO gear includes first and second cover plates fixedly secured to the ring gear; at least one elastic element engaged with the flange and the first and second cover plates; and a chamber bounded by the circumferential end of the piston and material forming the ring gear and sealed in first and second axial directions by the first and second cover plates, respectively. For first torque applied to the flange, the flange is arranged to rotate with respect to the ring gear such that: the inwardly and outwardly extending protrusions contacts; the flange displaces the circumferentially curved piston; and the circumferential end of the curved piston displaces fluid disposed in the chamber to dampen motion of the flange.

Abstract: A torsion damping device (10), in particular for a motor vehicle transmission, wherein the damping device (10) comprises at least two pendulum oscillators, a first washer (24A) having at least one first pendulum oscillator (P1) and a second washer (24B) having at least one second pendulum oscillator (P2).

Abstract: A torque transmission device for a drive train of a motor vehicle driven by an internal combustion engine. The device includes an input part and an output part having a common axis of rotation around which the input part and the output part are jointly rotatable relative to one another, and a spring damper arrangement that has at least one energy storage device. A friction device is effective between the input part and the output part and is arranged radially outside the at least one energy storage device, in order to provide a torque transmission device having a construction that is optimized with respect to the installation space.

Abstract: The torsion angle between a first rotation member and a second rotation member can be increased to lower the rigidity of a resilient member, thereby enhancing the attenuation property of torsional vibration. The torsional vibration damping apparatus 1 comprises a pair of disc plates 4, 5 having the rotation torque from an internal combustion engine transmitted thereto, input gears 9, 10 rotatably supported on the disc plates 4, 5, an output gear 13 provided to be relatively rotatable with respect to the disc plates 4, 5 and held in mesh with the input gears 9, 10, a boss member 7 splined to an input shaft 8 of a power transmission train, and a coil spring 14 having one end portion fastened to the input gear 9 and the other end portion fastened to the input gear 10.

Abstract: Disclosed is a torsional vibration attenuation apparatus including a driving rotation member and a driven rotation member which can be twisted in an enlarged torsion angle range with a non-linear torsional property, thereby preventing an excessively large torque from being transmitted from driving member to the driven member. The torsional vibration attenuation apparatus includes a boss, a cam member having a cam surface formed in an elliptical shape and provided on the outer peripheral portion of the boss to be integrally rotated with the boss, and a pair of arm members each provided between the cam member and a coil spring and having one end held in contact with the can surface and the other end held in engagement with a spring seat of the coil spring.

Abstract: A rotary joint (10; 110) includes an output member (12; 112) rotatable about a first axis of rotation (x1), a first actuator device (14) arranged to generate a rotary motion about the first axis (x1), an input member (16; 116) driven by the first actuator device (14; 114) about the first axis (x1), elastic elements (20, 64; 120) between the input member (16; 116) and the output member (12; 112) and configured such that the transmission of the torque takes place via the elastic elements (20, 64; 120). A second actuator device (22; 122) is arranged to change the stiffness of the rotary joint (10; 110).

Abstract: An Elastic Coupling (1) has a pair of bodies (2,3) that can rotate about a common axis and are mutually associated by a plurality of springs (7). Each spring has an end associated with the other body; the ends of the springs are associated with the bodies by floating engagement means (8). The floating engagement means arc provided by mating spherical surfaces between the spring and the seats (6) and allows to recover the misalignment cased by the variation of the distance between the seats, limiting the stresses and allowing the spring to work exclusively in an axial direction, without warping, contrary to conventional spring couplings, wherein the springs are inserted in simple cylindrical seats and must necessarily warp.

Abstract: A device for connecting a generator to a belt drive of an internal combustion engine is provided, which includes a belt pulley (1) that is guided so that it can rotate relative to a hub (2) set on a shaft (3). At least one spring element is arranged between the belt pulley (1) and the hub (2) and connects the belt pulley (1) and the hub (2) to each other elastically for transferring rotational motion and here sets a relative rotation between the belt pulley (1) and the hub (2) corresponding to an effective torsional stiffness. The at least one spring element is placed with a defined movement play (s) with respect to the belt pulley (1) and/or the hub (2), in order to allow relative rotation through the movement play (s) in a first region (I) with a low torsional stiffness, while, in a second region (2), a high torsional stiffness can be generated by the at least one spring element.

Abstract: A drive coupling has an inner plate positioned within an inner periphery of an outer plate. The inner plate includes a plurality of outwardly-extending projections. The inner periphery of the outer plate includes a plurality of recesses. A plurality of short heavy-duty compression springs are arranged to compress in a substantially-straight linear direction between respective projections of the inner plate and the respective side wall of the recess of the outer plate. The springs are further retained by spring travel limiting guides which protrude from the outer plate. The inner plate and an associated central shaft are positively supported by bushings and/or bearings which reside in outer retaining plates. These bushings and/or bearings retain the inner and outer plates in a fixed non-yielding radial and axial position. Bolts are used to hold the outer drive plate and the external retaining plates together.

Abstract: A hybrid vehicle has a power system with a torsional coupling. The power system includes a battery system for receiving, storing and providing electrical power, an internal combustion engine configured to provide rotational power through a flywheel, a first motor-generator, a second motor-generator, a control system, and a torsional coupling. The torsional coupling may absorb rotational shock caused by angular or rotational speed differences between the engine and the first motor-generator. The torsional coupling includes a driven plate assembly, a cover assembly and an interconnecting plate assembly. The interconnecting plate assembly may include a plurality of shock absorbing elements that absorb shock and vibration between the engine and the motor-generator.

Abstract: A system for absorbing vibration created by operation of an engine of the present invention includes a first plate driven by an engine shaft and a torque transmitting device for transferring torque from the engine shaft to a transmission input shaft. The system includes a first vibration absorber and a second vibration absorber. The first vibration absorber includes at least one selectively moveable mass. The second vibration absorber includes at least one biasing member and generally opposing ends. The first vibration absorber is configured to absorb vibrations created at a first harmonic of the engine and the second vibration absorber is configured to absorb vibrations created at multiple harmonics of the engine.

Abstract: An assembly for improving a connection between splined assemblies generally includes first and second assemblies each having at least one spline thereon, an integral fastening assembly for axially fastening the first assembly with respect to the second assembly, and a biasing assembly for asserting a force to oppositely rotationally dispose the first and second assemblies with respect to one another. In an embodiment, the first and second assemblies are annular plates. A method for improving a connection between splined assemblies generally includes asserting a bias upon first and second assemblies such that are oppositely rotationally disposed with respect to one another. In the above method, the first assembly and the second assembly each have at least one spline, an integral fastening assembly for axially securing the first and second assemblies, and a biasing assembly. In an embodiment of the above method, the first and second assemblies are annular plates.

Abstract: An internal combustion engine comprises a turbo-compound and the known Föttinger-coupling is replaced by a torsion vibration damper. The Föttinger-coupling, which is used to transmit power, has high losses in power when it is necessary to have a differential rotational speed between the input side and the output side, i.e., the appearance of a slip. The losses are not used in a torsion vibration damper which has at least the same quality as a Föttinger-coupling.

Abstract: A torsional vibration damping device (1), in particular for a motor vehicle clutch, said device comprising a disc (60) and a support (80) mounted mobile in rotation relative to each other about a common main axis, and linked in rotation via circumferential elastic members (90) damping torsional vibrations, said elastic members being interposed between the disc (60) and the support (80) and maintained in position circumferentially via lugs (65) of the disc (60) and lugs (82,84) of the support (80) whereon are supported the elastic members (90) and radially via a guide ring (100) passing through the elastic members (90) and integral with the disc (60). Said device is characterised in that the lugs (82,84) of the support (80) are mounted on either side of a section of the ring (100) and the lugs (65) of the disc (60) can move freely at the angle between the lugs (82,84) of the support (80).