Valeo Embrayages

Herve Mahe

Roel Verhoog

Daniel Fenioux

Franck Cailleret

Olivier Marechal

Herve Maurel

Jerome Boulet

Roël Verhoog

Benoit Fleche

Carsten Lauridsen

Stephan Magne

A torque transmission device for a motor vehicle, having a torque input element, a torque output element, and at least one pair of elastic members mounted between the torque input and output elements and counteracting rotation of input and output elements with respect to one another. The elastic members are arranged serially by means of a phasing member so that the elastic members deform in phase with one another. The stiffness Kof the elastic member mounted between the torque input element and the phasing member is less than the stiffness Kof the elastic member mounted between the phasing member and the torque output element, the ratio KKbeing equal to at least 2. One elastic member of the at least one pair of elastic members includes two coaxial helical springs mounted one inside the other.

Torque transmission device for a motor vehicle

A filtering mechanism for torque fluctuations is interposed between a crankshaft of an internal combustion engine and a transmission. This mechanism comprises a rotating member to be damped, an oscillating inertial flywheel rotating around the axis of revolution, and pivot-mounted modules allowing angular deflection of the oscillating inertial flywheel with respect to the member to be damped. The modules each have at least one oscillating arm pivoting radially with respect to the member to be damped and a kinematic connecting member between the oscillating arm and the oscillating inertial flywheel. When the mechanism rotates centrifugal forces on the oscillating arm produce a counteracting torque that tends to return the oscillating inertial flywheel and the member to be damped toward the equilibrium position. The counteracting torque increases with the rotation speed of the filtering mechanism and with the amplitude of the angular deflection.

Mechanism for filtering torque fluctuations of secondary member

A torque transmission device for a motor vehicle, having a torque input element (), a torque output element (), and at least two elastic members () mounted between the torque input and output elements () and counteracting rotation of input and output elements with respect to one another. The elastic members () are arranged serially by means of a phasing member () so that the elastic members () deform in phase with one another. The stiffness K1 of the elastic member () mounted between the torque input element () and the phasing member () is less than the stiffness K2 of the elastic member () mounted between the phasing member () and the torque output element (), the ratio K2/K1 being equal to at least 2.

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Amiens, France

Herve Mahe