DUAL MASS FLYWHEEL

摘要

The dual mass flywheel comprises a spring assembly (4; 104; 112; 128; 129), if necessary, with two stages of which one can include a spiral spring. Furthermore, the dual mass flywheel comprises a friction damping system (111) that applies torque independently of the rotational speed of the flywheel.

主权项

1. A dual mass flywheel comprising:
a primary mass, a secondary mass angularly movable with respect to said primary mass, and a spring assembly to connect said primary mass to said secondary mass, the spring assembly comprising:
a first stage comprising at least one spiral spring,a second stage having a torsional stiffness greater than that of the said first stage, anda structure configured to connect said first stage in series with said second stage,wherein said at least one spiral spring comprises a first end portion rigidly connected to said primary mass or to said secondary mass and a second end portion connected to a body of said structure, said at least one spiral spring being placed side by side, in the axial direction, to said second stage.