Abstract: A torsion damping device for a vehicle drivetrain includes: a first rotary element, a second rotary element, an elastic device, a friction device including an actuating washer mounted to rotate as one with a friction washer and including an actuating tab interposed circumferentially between a first end of a spring and the first rotary element so as to allow relative rotation between the actuating washer and the second rotary element when the first end of the spring is compressed by the first rotary element in the direction of a second end of the spring opposite to the first end.

Abstract: The present damper device includes a large hysteresis mechanism, generating a large hysteresis torque, and a hysteresis inhibiting mechanism.

Abstract: A damper device is disclosed. The damper device includes first and second side plates opposed in an axial direction, a hub flange, elastic members, a first friction member, and an oil supply portion. The first and second side plates has an annular shape. The hub flange, including a boss portion and a flange portion, is rotatable relative to the first and second side plates. The flange portion is disposed between the first and second side plates in the axial direction. The elastic members elastically couple the hub flange and both the first and second side plates in a rotational direction. The first friction member is disposed between the first side plate and the flange portion in the axial direction, and generates friction resistance when the first side plate and the hub flange rotate. The oil supply portion supplies lubricating oil from the second side plate to the first friction member.

Abstract: A damper assembly includes a driven plate, an intermediate plate, and elastic drive elements. The intermediate plate includes a radially outer base wall and opposite side walls. The elastic drive elements are interposed, between tabs of the driven plate and tabs of the intermediate plate to permit relative rotational movement therebetween. The elastic drive elements reside in cavities defined, in part, by a substantially annular radially inwardly facing surface of the intermediate plate. A first region of the radially inwardly facing surface in closest proximity to the elastic drive elements has a first radius. A second region of the radially inwardly facing surface axially interposed between the first region and the first side wall has a second radius that is greater than the first radius.

Abstract: A hydrokinetic torque coupling device for a motor vehicle comprises an impeller wheel intended to be coupled to a crankshaft and adapted to hydrokinetically rotate a turbine wheel. The impeller wheel rotationally coupled to a cover at least partially accommodating the impeller wheel, the turbine wheel and the reactor. The turbine wheel is axially moves between an engaged position in which the turbine wheel and the impeller wheel are axially moved closer to each other and rotationally coupled together, and a disengaged position in which the turbine wheel and the impeller wheel are axially moved away from each other and rotationally uncoupled. The device comprises a bracing member axially extending between the turbine wheel and a part of the cover, with the bracing member being adapted to limit the axial motion of the turbine wheel toward the above-mentioned part of the cover, opposite the turbine wheel.

Abstract: A torque converter is provided. The torque converter includes an impeller and a stator. The stator includes a thrust assembly connected to both the stator and the impeller. The thrust assembly includes an axial thrust surface for axially contacting an axial surface of a radially extending wall of the impeller. A method of forming a torque converter is also provided. The method includes connecting a thrust assembly to a stator and connecting an impeller to the thrust assembly.

Abstract: In a positive torsion angle region in which a torque is transmitted from an engine side, a small hysteresis torque is generated at all times. Therefore, torsional vibrations of a small amplitude occurring during idle operation can be effectively attenuated by the small hysteresis torque, without switching to a large hysteresis torque, for example, during idle operation of the engine. As a result, the driver can be prevented from feeling uncomfortable due to switching to a large hysteresis torque during idle operation, and drivability can therefore be improved.

Abstract: A torsional vibration damper of a hydrokinetic torque coupling device, comprises a driven plate rotatable about a rotation axis, an intermediate plate rotatably mounted about the driven plate coaxially with the rotation axis, a back plate rotatably mounted about the intermediate plate coaxially with the rotation axis, a plurality of circumferentially acting elastic members interposed between the driven plate and the intermediate plate, and a damper retainer plate non-moveably secured to the back plate coaxially with the rotation axis. The damper retainer plate is operatively connected to the elastic members. The driven plate, the intermediate plate and the back plate are aligned with each other along a radial axis perpendicular to said rotation axis.

Abstract: Providing a vehicle damper device enabling acquisition of hysteresis torque with a simple structure. When the stoppers 96 and 97 are actuated and the relative rotation is regulated between the plates 90, 92 and the disc plate 56, a slip occurs between the plates 90, 92 and the hub member 58. As a result, a friction force is generated between the plates 90, 92 and the hub member 58, and a hysteresis torque is generated based on this friction force. Since this configuration can be achieved by simply providing the plates 90, 92, the clip 94, and the stoppers 96, 97, the hysteresis torque can be acquired with a simple configuration without a significant design change.

Abstract: A torque fluctuation absorber includes a disc fixed to a flywheel, a hub fixed to a transmission, first and second side plates fixed to the disc, a damper member, first and second control plates provided at axial both sides of the hub, the first and second control plates being riveted by a stopper pin, a first hysteresis mechanism including first and second low friction members and generating a small hysteresis, and a second hysteresis mechanism including first and second high friction members and generating a large hysteresis. The hub includes a flange portion having a through-hole into which the stopper pin is inserted. A relative rotational angle between the control plates and the hub is defined by a clearance formed between the through-hole and the hub. The first hysteresis mechanism is activated when the relative rotational angle is defined within the clearance.

Abstract: A clutch disc includes a hub having a flange portion extended in a radial direction and a boss portion connected to a driven shaft, a side plate arranged coaxially with and relatively rotatable with the hub, a friction member connected to an external periphery of the side plate and frictionally engaged with a drive shaft, an accommodation window formed on an external periphery portion of the hub and on the side plate, the accommodation window on the hub and the accommodation window on the side plate being positioned facing each other, springs elastically connecting the hub to the side plate in the accommodation window, and a thrust member provided in a space between the hub and the side plate. The thrust member includes a ring shape member biased towards the flange portion of the hub by a biasing device. An opposing surface configured to face the hub is tapered.

Abstract: A dampening disk assembly stabilizes friction generated by friction mechanisms within a first range of torsional angle in a separated hub type of clutch disk assembly. An intermediate member (18, 20) is disposed axially between a clutch plate 31 and a retaining plate 32. The first axial side of the intermediate member is supported by the clutch plate 31. The intermediate member (18, 20) has an intermediate plate 18 and a supporting member or fixing plate 20 with a first part 71 and a supporting portion 73 at an inner circumferential portion. An output hub 3 has a flange 64 disposed axially facing the supporting portion 73. The intermediate member (18, 20) and the hub 3 are axially supported by the clutch plate 31. A first friction mechanism 8 is formed between the fixing plate or supporting member 20 and the retaining plate 32. The first friction mechanism 8 includes a friction washer 81 and a first cone spring 49.