Abstract: A coupling system for a torque transmission device of a motor vehicle includes a sliding sleeve. An actuator including a mobile member movable between a rest position and an activated position is linked to the sliding sleeve by a rotating kinematic link and by an elastic return member fixed in rotation about the axis of revolution. The mobile member is capable, by means of the kinematic link, of driving the sliding sleeve from the retracted position to the coupling position and of loading the elastic return member by passing from the rest position to the activated position. The elastic return member is able, while unloading, by means of the kinematic link, to return the mobile member from the activated position to the rest position and the sliding sleeve from the coupling position to the retracted position.

Abstract: A torque transmission device for a vehicle including at least one motor, the torque transmission device including a first clutch, a second clutch and a transmission member. A first transmission mechanism is provided between the first clutch and the transmission member, and a second transmission mechanism is provided between the second clutch and the transmission member. A connection element arranged to permit or interrupt the mutual rotational drive between the first output element of the first clutch and the transmission member, by means of the first transmission mechanism.

Abstract: A differential drive system for a vehicle includes a differential drive device, a dog clutch device, and an electromagnetic actuator. The axis of rotation of the differential drive device is situated outside of the annular electromagnet of the electromagnetic actuator.

Abstract: A transmission mechanism includes an input reduction stage having an input member and an output member rotating about axes that are parallel to a reference axis of the mechanism, an output differential, two output half-shafts which are driven by the differential, at least a first plantetary geartrain kinematically connecting the input reduction stage to the output differential. A switchover mechanism switches the first plantetary geartrain between at least a first speed ratio and a second speed ratio. The first plantetary geartrain and the output member of the input reduction stage are coaxial with the reference axis and with one reference half-shaft of the output half-shafts and surround the reference half-shaft, the first plantetary geartrain being positioned, along the reference axis, between the output member of the input reduction stage and the output differential.

Abstract: An electric drivetrain including an electric machine and at least one output pinion intended to be connected to an axle differential, and at least one speed reduction device including a first gear train and a second gear train intended to drive the output pinion in rotation in a first rotational direction or a second rotational direction.

Abstract: A coupling system for a torque transmission device of a motor vehicle includes a sliding sleeve. An actuator including a mobile member movable between a rest position and an activated position is linked to the sliding sleeve by a rotating kinematic link and by an elastic return member fixed in rotation about the axis of revolution. The mobile member is capable, by means of the kinematic link, of driving the sliding sleeve from the retracted position to the coupling position and of loading the elastic return member by passing from the rest position to the activated position. The elastic return member is able, while unloading, by means of the kinematic link, to return the mobile member from the activated position to the rest position and the sliding sleeve from the coupling position to the retracted position.

Abstract: A torque transmission device for a vehicle including at least one motor, the torque transmission device including a first clutch, a second clutch and a transmission member. A first transmission mechanism is provided between the first clutch and the transmission member, and a second transmission mechanism is provided between the second clutch and the transmission member. A connection element arranged to permit or interrupt the mutual rotational drive between the first output element of the first clutch and the transmission member, by means of the first transmission mechanism.

Abstract: A torque transmission device for a motor vehicle includes at least one motor, a first output shaft rotationally coupled to an output element of a first clutch and to an output element of a second clutch, the first output shaft to drive a first wheel of the vehicle, a second output shaft rotationally coupled to an output element of a third clutch and to an output element of a fourth clutch, the second output shaft to drive a second wheel of the vehicle, opposite the first wheel, a torque transfer mechanism to transmit the torque from the motor to an input element of the first clutch and to an input element of the fourth clutch with a first gear ratio, and to transmit the torque from the motor to an input element of the second clutch and to an input element of the third clutch with a second gear ratio.

Abstract: An electric drivetrain including an electric machine and at least one output pinion intended to be connected to an axle differential, and at least one speed reduction device including a first gear train and a second gear train intended to drive the output pinion in rotation in a first rotational direction or a second rotational direction.

Abstract: A damping device for damping vibrations of a motor vehicle transmission drivetrain. The damping device features a first element and a second element (2) rotationally movable around a rotation axis X, an elastic damping member having an elastic blade (13, 14) mounted rotationally integrally with the first element (3) and a rolling body movable with respect to the second element along a curvilinear trajectory over at least a predetermined angular sector (A). Movement of the rolling body along the curvilinear trajectory with respect to the second element is accompanied by a movement of the rolling body on the elastic blade, causing the elastic blade to flex.

Abstract: An actuator for a vehicle transmission system, comprising: an electrical machine comprising an armature and an inductor, a static converter comprising a plurality of commutation cells, the static converter being arranged so as to electrically connect the electrical circuit of the armature to an electrical energy source, and a system for controlling the commutation cells of the static converter, said system being configured so that the torque constant of the electrical machine can assume at least two different values depending on the control applied to said cells.

Abstract: The invention concerns a device (1) for electrically controlling a transmission system, comprising a clutch pedal (2), said pedal (2) being intended to be hinged to a fixed support, said pedal (2) further comprising an area (4) to be pressed by the foot of a user, a force emulator (5) comprising a first part (6) intended to be linked to the fixed support and a second movable part (8) hinged to the clutch pedal (2), a resilient member (9) acting between the clutch pedal (2) and the first part (6), assistance means (20) comprising a first part (21) intended to be linked to the fixed support, and a second movable part (22) hinged to the clutch pedal (2), a resilient member (25) acting between the first part (21) and the clutch pedal (2).

Abstract: A torsional damper for a torque transmission device, comprising: a rotationally movable first element (102) and second element (103); and an elastically deformable blade (117a, 117b) integral with one of the first and second elements; an abutment element (121) carried by the other of the first and second elements and configured to interact with the blade in such a way that for an angular deflection between the first and second elements with respect to an inactive angular position, the abutment element applies a flexural load onto the blade, producing jointly a reaction force capable of returning the first and second elements to the inactive angular position, blade has an inner arm (132) and an outer arm (134) connected by a bend (133), the inner arm being situated radially between the outer arm and a rotation axis.

Abstract: The invention relates to a device for damping vibrations, for a motor vehicle transmission drivetrain, comprising: a first element and a second element (2) that are rotationally movable around a rotation axis X; elastic damping means having an elastic blade (13, 14) mounted rotationally integrally with the first element (3); and a rolling body movable with respect to the second element so that a curvilinear trajectory can be executed on at least a predetermined angular sector (A), the curvilinear movement of the rolling body with respect to the second element being accompanied by a movement of the rolling body on the elastic blade, causing the latter to flex.

Abstract: A torsional damper for a torque transmission device, comprising: a first element (1) and a second element (2) rotationally movable with respect to one another; and a first damping means and a second damping means, each damping means comprising: an elastically deformable blade (9) having a fastening portion (12) and an elastic portion (13), an abutment element carried by the other of the first and second elements and configured, for an angular deflection between the first and second elements with respect to an inactive angular position, to apply a flexural load onto the blade, the elastic portion of the blade of the first damping means proceeds circumferentially beyond the fastening portion of the blade of the second damping means.

Abstract: An actuator for a vehicle transmission system, comprising: an electrical machine comprising an armature and an inductor, a static converter comprising a plurality of commutation cells, the static converter being arranged so as to electrically connect the electrical circuit of the armature to an electrical energy source, and a system for controlling the commutation cells of the static converter, said system being configured so that the torque constant of the electrical machine can assume at least two different values depending on the control applied to said cells.

Abstract: An under travel actuator, particularly intended for an automobile clutch, including an engine (12) for the translation movement of a mobile gear (14) acting on a push stem (16) for the opening and closing of the clutch, the mobile gear including screw-nut means (22, 24) cooperating with two combined means of unidirectional driving in order to regulate the length of the push stem (16) according to the wear of the clutch surfaces subject to friction.

Abstract: An under travel actuator, particularly intended for an automobile clutch, including an engine (12) for the translation movement of a mobile gear (14) acting on a push stem (16) for the opening and closing of the clutch, the mobile gear including screw-nut means (22, 24) cooperating with two combined means of unidirectional driving in order to regulate the length of the push stem (16) according to the wear of the clutch surfaces subject to friction.

Abstract: A friction clutch comprising a pressure plate (12) consisting of tow half-plates (12A, 12B) integral in rotation with the input shaft but axially mobile, relative to each other, under the action of the device compensating play due to wear. The wear compensating device comprises a pair of complementary ramps (17, 18) circumferentially arranged, axially associated respectively with each of the half-plates (12A, 12B), one support ramp (17) being integral in rotation to one (12B) of the half-plates, the other adjustment ramp (18) being adapted to move circumferentially relative to the support ramp (17) in the compensating direction increasing the global thickness of the first plate (12) and prevented form moving in the other direction by one-way means (24). The circumferential movement is controlled by a tripping element (22) sensitive to wear condition, the adjusting ramp (18) being arranged at the periphery of an inertial piece (12A).

Abstract: The invention concerns a friction clutch for a heat engine motor vehicle, comprising a reaction plate (13), a friction disc (14), a pressure plate (12), a cover (11), the pressure plate (12) consisting of two half-plates (12A, 12B) integral in rotation with the input shaft but axially mobile, relative to each other, under the action of a device compensating play due to wear which comprises a pair of complementary ramps (17, 18) circumferentially arranged, axially associated respectively with each of the half-plates (12A, 12B), one of the ramps (17) called support ramp being integral in rotation to one (12B) of the half-plates, the other ramp (18) called adjustment ramp, being adapted to move circumferentially relative to the support ramp (17) in the direction increasing the global thickness of the first plate (12), called compensating direction, and prevented from moving in the other direction by one way means (24), said circumferential movement being controlled by a tripping element (22) sensitive to wear co