Patent No. EP2718586 (titled "Drive System For A Vehicle") was filed by ZF Friedrichshafen on May 9, 2012. The application was issued on Jul 3, 2024.
A vehicle drive system comprises an internal combustion engine switchable between operating modes of varying performance and a torsional vibration damping arrangement. The damping arrangement includes a flywheel mass arrangement and at least one deflection mass pendulum unit configured for the main-excitation orders of each operating mode. At least one pendulum unit is a centrifugal mass pendulum where the deflection mass arrangement's radial distance from the rotation axis changes upon deflection from a basic relative position. This unit features a deflection mass carrier and a deflection mass arrangement connected by a coupling member movable along guide paths with vertex regions. Additionally, a torsional vibration damper includes a primary side providing the flywheel mass and a secondary side providing the deflection mass carrier, rotatable against a damper element arrangement.

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