A torque transmission arrangement for a powertrain of a motor vehicle includes an input and an output. A torque path runs from the input to the output. A torsional vibration damping unit is positioned first, followed by a gear unit, along the torque path between the input and the output. A first slip arrangement and/or a second slip arrangement for generating a speed slip are/is provided in the torque path between the input and the output for vibration damping.

A torque fluctuation inhibiting device is disclosed. The torque fluctuation inhibiting device includes an input member, an elastic member, a mass body and a centrifugal element. The input member includes a pair of input plates disposed in axial alignment. The input member is disposed to be rotatable. The elastic member is held by the pair of input plates. The mass body is disposed to be rotated with the input member and be rotatable relative to the input member. The centrifugal element is disposed to be radially movable by a centrifugal force acting thereon in rotation of the input member. The centrifugal element is disposed between the pair of input plates.

A torque fluctuation inhibiting device is disclosed. The torque fluctuation inhibiting device includes an elastic member, an input member, a mass body and a centrifugal element. The input member is a member to which a torque is inputted through the elastic member. The input member is disposed to be rotatable. The mass body is disposed to be rotated with the input member and be rotatable relative to the input member. The centrifugal element is disposed radially outside the elastic member. The centrifugal element is disposed to be radially movable by a centrifugal force acting thereon in rotation of the input member.

An overload clutch in a drivetrain having a shaft-hub connection between an input part and an output part is disclosed. The overload clutch includes a press fit including a first contact surface and a second contact surface, wherein at least one of the first contact surface and the second contact surface is coated with a soft metal. For homogenizing a surface pressure of the first and second contact surfaces, an oversize allowance between components forming a shaft and a hub is selected prior to joining the shaft and the hub such that during the joining a yield point of the soft metal is reached or exceeded.

A drive train for a motor vehicle includes an internal combustion engine, a starting device, and a vibration isolation device. The internal combustion engine has a main order of vibration and an excitation frequency predetermined by a predetermined operating principle and a predetermined number of cylinders. The starting device is for starting the internal combustion engine and has an electric machine with a torque characteristic over a speed (n). The vibration isolation device is designed for the main order of vibration of the internal combustion engine. The vibration isolation device has a resonance characteristic below an idling speed (nL) of the internal combustion engine in a resonance range occurring in a first speed range (n2). The resonance range is shifted into a second, lower speed range (n1) when the electric machine is coupled. The electric machine is arranged to supply a torque effective beyond the second, lower speed range (n1).

The present disclosure relates to a tuning system for modulating stiffness of a gearbox 102 and a pinion 502. The tuning system comprises one or more incremental masses 606 adapted to be attached to a non-drive end (NDE) side 504 of the pinion 502 of the gearbox 102 to allow modulation of resonant frequency of the pinion 502, and a plurality of tie rods 104 coupled between a base plate 106 of the gearbox 102 and split axial line 108 casing of the gearbox 102, wherein the plurality of tie rods 104 are adapted to modulate effective stiffness of the gearbox casing in a specific direction.

The present disclosure relates to a tuning system for modulating stiffness of a gearbox 102 and a pinion 502. The tuning system comprises one or more incremental masses 606 adapted to be attached to a non-drive end (NDE) side 504 of the pinion 502 of the gearbox 102 to allow modulation of resonant frequency of the pinion 502, and a plurality of tie rods 104 coupled between a base plate 106 of the gearbox 102 and split axial line 108 casing of the gearbox 102, wherein the plurality of tie rods 104 are adapted to modulate effective stiffness of the gearbox casing in a specific direction.

A drive device for a motor vehicle, having a first drive assembly, a second drive assembly that can be coupled to the first drive assembly with a fixed transmission ratio by an intermediate clutch, as well as a driven shaft that can be coupled to the first drive assembly and to the second drive assembly. Here, the first drive assembly is directly coupled or can be coupled to a third drive assembly, and that the driven shaft can be coupled to the second drive assembly, on the one hand, by way of a first shift clutch and a first transmission stage, and, on the other hand, by way of a second shift clutch, which is coupled to the second drive assembly parallel to the first shift clutch, and a second transmission stage.

A torque-sensing and transmitting device is provided. The device includes a transmission body, two vibration-damping members, two inner casings, two outer casings, a first circuit board module, and a battery module. The two inner casings are disposed on a shaft of the transmission body, and a vibration-damping member is disposed between the inner casing and the shaft. The first circuit board module is disposed in one of the two inner casings, and the first circuit board module is covered by a vibration-damping layer. The battery module is disposed on the other inner casing, and the battery module is covered by a vibration-damping layer. With the configuration of the vibration-damping member and the vibration-damping layer, this device solves the problem of the first circuit board module and the battery module being damaged due to vibration.

The present invention relates to a lock-up device for a torque converter which has a simple structure compared to the prior art, which reduces manufacturing costs, and which may reduce a size of the entire torque converter by minimizing an installation space of a dynamic damper.