Abstract:
A torsion damper for a vehicle powertrain includes a first element having a support element and a second element movable in rotation with respect to the first element about an axis of rotation X. Springs are mounted between the first element and the second element so as to compress to allow relative rotation about the X axis between the first element and the second element. A friction device including a friction washer provided with at least one fixing portion rigidly fixed in rotation on a support element of the first element, the friction washer having a friction portion having a friction track backed against a dorsal face of the friction portion. An elastic washer arranged axially between the first element and the dorsal face of the friction portion, each fixing portion for fixing to the first element being connected to the friction portion by a flexible element allowing axial displacement of the dorsal face of the friction portion relative to the support element of the first element.
Abstract:
A device for damping torsional oscillations, comprising: a support capable of moving rotationally around an axis; a plurality of pendulum bodies, each pendulum body being movable with respect to the support; and a plurality of bearing members, each bearing member interacting with a first raceway integral with the support and with at least one second raceway integral with a pendulum body, the movement of each pendulum body with respect to the support being guided by two of those bearing members, the support comprising a plurality of windows in each of which two bearing members are received, one of those bearing members interacting with at least one second raceway integral with one of the pendulum bodies, and the other of those bearing members interacting with at least one second raceway integral with another of those pendulum bodies, the pendulum bodies being circumferentially adjacent.
Abstract:
A damping system (10) having a rotation axis (X) and comprising at least: at least one first flyweight (14) and one second flyweight (14) able to oscillate with respect to support member (12), and at least one device (20) for guiding the first and second flyweights (14) with respect to the support member (12), having at least one bearing element (22) able to interact with a pair of opposite tracks, respectively a first guidance track (24) and a second guidance track (26) that is carried by the support member (12), wherein the first guidance track (24) is carried by said connecting means (16).
Abstract:
A device (10) for damping torsion between a clutch element (16) and a transmission shaft, comprising: an input washer (12A, 12B) that is rotationally integral with the clutch element (16); two output webs (18A, 18B) that are rotationally integral with the transmission shaft by means of a central hub (20); a pair of circumferentially acting elastic members (42) that are interposed circumferentially in series between the input washer (12A, 12B) and the output web (18A, 18B); a phase washer (44) that is interposed circumferentially between the two elastic members (42) of said pair.
Abstract:
A motor vehicle transmission system includes a reduction device having at least an output shaft including a first gearwheel and a second gearwheel. A differential drive device is configured to distribute the torque from the reduction device to two half-shafts. The differential drive device includes a coupling device which, in a coupled position, transmits torque between a first element and a second element of the differential drive device, the coupling device further including an actuator. A radial plane, orthogonal to the axes X and W, passes through the first gearwheel and through the coupling device.
Abstract:
A pendulum damping device including a mounting to rotate about an axis; at least one pendulum body that includes first and second pendulum masses axially spaced relative to each other and movable relative to the mounting, the first pendulum mass being axially placed on a first side of the mounting and the second pendulum mass being axially placed on a second side of the mounting, and at least one member to connect the first and second pendulum masses and couple the masses; and at least one rolling member that guides the movement of the pendulum body relative to the mounting. The rolling member engages with a rolling track secured to the mounting and with a rolling track secured to the pendulum body and defined by the connecting member. The rolling member exerts an axial clamping force on one of the pendulum masses during movement of the one pendulum mass relative to the mounting.
Abstract:
A hydrokinetic torque coupling device includes a turbine wheel (3), an impeller wheel (2) able to hydrokinetically drive the turbine wheel (3), a cover (5) non-rotatably attached to the impeller wheel (2) so as to define an internal volume (6) accommodating the turbine wheel (3), and a seal (18) mounted to a radially external periphery of the turbine wheel (3). The turbine wheel (3) being able to be axially moved between an engaged position and a disengaged position. The seal (18) configured to engage one of a matching sealing surface (22) of the impeller wheel (2) positioned radially outside the turbine wheel (3) and the cover (5) in the engaged position and to be disengaged from one of the matching sealing surface (22) the impeller wheel (2) and the cover (5) in the disengaged position.
Abstract:
A damper for a motor vehicle torque transmission device, in particular of the long travel damper type, having a torque input element (22), a torque output element (28), at least one group (26) of differing elastic members (26a, 26b) mounted between the torque input element and torque output element and acting oppositely to the rotation of the torque input element (22) and torque output element (28) with respect to one another, the elastic members (26a, 26b) of the group of elastic members being arranged in series by means of a phasing member (30) so that the elastic members (26a, 26b) of the group (26) of elastic members deform in phase with one another, the group (26) of elastic members (26a, 26b) being received in a receptacle (44) that is asymmetrical with respect to a median radial plane of the receptacle (44).
Abstract:
A method for assembling a pendulum-type damping device (1) includes the steps of force-fitting a first end of the spacer (17) into an opening (26) of a first part (3a) of a pendulum mass (3). A support (2) is positioned so that the spacer (17) spans a corresponding opening of the support (2). A roller is positioned between the spacer (17) and the edge of the opening of the support (2). The second end (17b) of the spacer (17) is force fit into an opening (26) of a second part (3b) of the mass (3).
Abstract:
A device (10) for damping torsion between a clutch element (16) and a transmission shaft, comprising: an input washer (12A, 12B) that is rotationally integral with the clutch element (16); two output webs (18A, 18B) that are rotationally integral with the transmission shaft by means of a central hub (20); a pair of circumferentially acting elastic members (42) that are interposed circumferentially in series between the input washer (12A, 12B) and the output web (18A, 18B); a phase washer (44) that is interposed circumferentially between the two elastic members (42) of said pair.