A torque fluctuation inhibiting device includes first and second rotatable rotors, a centrifugal element and a cam mechanism. The first rotor includes an accommodation portion. The second rotor is rotatable with and relative to the first rotor. The centrifugal element is disposed in the accommodation portion to be radially movable, and receives a centrifugal force generated by rotation of the first or second rotor. The cam mechanism receives the centrifugal force acting on the centrifugal element, and converts the centrifugal force into a circumferential force directed to reduce rotational phase difference between the first and second rotors. The cam mechanism includes a cam surface provided on the centrifugal element, and a cam follower which contacts the cam surface. The cam follower transmits a force therethrough between the centrifugal element and the second rotor. The centrifugal element is radially moved while rolling on an inner wall surface of the accommodation portion.

A torque converter includes a pump shell having pump blades; a turbine shell having a support portion supporting turbine blades, wherein the turbine blades are driven by the pump blades via a fluid to rotate about a rotational axis. The turbine shell further has a flange portion extending outward at the radially outside of the support portion and is integrally formed with the support portion. The torque converter further comprises a vibration damping device, the mass of which is mounted on the flange portion and configured to be movable relative to the flange portion and apply a torque to the turbine shell, thereby damping the torque vibration on the turbine shell. In addition, the invention also discloses a vehicle comprising the torque converter.

An assembly for a hybrid drivetrain of a motor vehicle, having a first torque transmission device and a second torque transmission device connected thereto so as to transmit torque. The first torque transmission device is arranged to be axially spaced apart from the second torque transmission device and the second torque transmission device has a smaller radial extension than the first torque transmission device. An installation space for a drivetrain device is defined radially above the second torque transmission device such that said drivetrain device is delimited axially by the first torque transmission device. A spacer device is arranged between the two torque transmission devices in the torque transmission path for axial spacing and is designed such that an axially definable minimum spacing between the defined installation space and the first torque transmission device is maintained and has a balancing device for compensating for imbalance of the assembly.

A torsional vibration damper for a drive train includes an axis of rotation, a multi-flange damper for damping torsional vibrations, a torque limiter unit for limiting a maximum transmissible torque, an outer hub connecting the multi-flange damper to the torque limiter unit for torque transmission, and an inner hub for connection to a transmission input shaft. The multi-flange damper has a plurality of flanges. The torque limiter unit is arranged radially inside the multi-flange damper and includes an inner plate and an outer plate. The outer hub is arranged radially between the multi-flange damper and the torque limiter unit and the inner hub is arranged radially inside the torque limiter unit. The outer hub includes an external toothing engaged with each of the plurality of flanges and an internal toothing engaged with the outer plate.

A tunable mass damper assembly is attachable to a rotor blade. The tunable mass damper assembly comprises a base configured to be attached to the rotor blade and a pendulum mass structure movably attached to the base and configured to move relative to the base in accordance with a rotational speed of the rotor blade about a rotor axis. The pendulum mass structure is configured to reduce vibratory forces of the rotor blade induced by a rotation of the rotor blade about the rotor axis. An entirety of the pendulum mass structure being configured to be contained within and enclosed by the rotor blade.

A vibration damping device which is able to damp vibration of a rotating body in a high-speed range and to certainly accelerate the rotating body to the high-speed range is provided. A vibration damping device 1 damping vibration of a rotating body 100 includes an automatic balancer 2 which is configured to cancel out imbalance of the rotating body 100 when the rotating body rotates 100; a liquid damper 4 which is coaxially rotatable with the rotating body 100 and includes a collision member 23 provided in a casing 20 in which liquid 22 is sealed, the liquid colliding with the collision member 23 when the liquid 22 moves in a circumferential direction; and a relative rotation unit 5 which is configured to cause the liquid damper 4 to rotate relative to the rotating body 100.

The invention relates to a torsional vibration damper, in particular a dual-turbine damper, for a drivetrain of a motor vehicle, preferably for a drivetrain of a motor vehicle having a hydrodynamic torque converter, having a first damper and a second damper connected to the latter in series, where the two dampers are situated essentially on a common circumference or essentially in a common plane of the torsional vibration damper, there being a damper intermediate mass connected between the two dampers connected in series, and a centrifugal pendulum device provided on the damper intermediate mass.

A pendulum damping device incorporated into a drive train of a motor vehicle, notably into a clutch, includes a support capable of rotational movement about an axis of rotation, a pendulum assembly of which the movement with respect to the support is guided by at least one rolling member, and an end-stop damping system borne directly by the pendulum assembly and able at least to damp the coming of said pendulum assembly into a position of abutment against the support of said pendulum assembly during the radial fall and/or saturation of this said pendulum assembly. The pendulum assembly also includes at least one radial protuberance designed to pass at least partially through an opening made in the end-stop damping system.

A method for operating a multi-cylinder internal combustion engine in which every active cylinder operates in a four-stroke mode and every deactivated cylinder filled with an approximately completed gas filling is compressed and expanded during the four-stroke operation of the activated cylinder. In a method in which excitations of a crankshaft speed are minimized, a limited number of even-numbered cylinders of a multi-cylinder internal combustion engine (2) having a maximum even number of cylinders (20, 21, 22, 23, 24, 25) are deactivated sequentially, the limited even number of cylinders being smaller than the maximum even number of cylinders (20, 21, 22, 23, 24, 25) of the multi-cylinder internal combustion engine (2).

A vehicle transmission system component including a first subassembly having an input and an output, between which a torque can be transmitted. A second subassembly forms a pendulum-type damping device, and disposed outside the path of the torque transmitted by the first subassembly. The first and the second subassemblies are connected to one another by at least one connecting element capable of being elastically deformed circumferentially.