Dual-mass flywheel for drive train of motor vehicle, has two inertial masses connected with respect to each other with elastic effect in rotation via spring unit that has coupling characteristic continuously varied by positioning unit

摘要

The fly-wheel (11) has a primary inertial mass (12) and a secondary inertial mass connected with respect to each other with an elastic effect in rotation through a spring unit (30). The spring unit has a coupling characteristic continuously varied by a positioning unit (41) with an electric engine, and a spring element (32') of the spring unit has pre-stress that is varied using the positioning unit. The spring element has two ends actively connected to the primary and secondary inertial masses, respectively.