Hybrid powertrain with active torsional vibration damping and method for performing active torsional vibration damping

摘要

The invention relates to a hybrid powertrain with active torsional vibration damping and method for performing the active torsional vibration damping with a torsionally vibrating engine with a crankshaft, with a operatively connected to the crankshaft, at least one operating point low vibration isolation of the torsional vibrations containing torsional vibration damper with the crankshaft associated primary flywheel and one opposite this against the action of a spring means relatively and limited rotatable, a transmission input shaft of a transmission associated flywheel and with an electric machine with an operatively connected to the transmission input shaft rotating mass and a control unit. In order to be able to form such a drive train simply and nevertheless with a high degree of isolation of the torsional vibrations, the spring device is formed from linearly formed springs, the rotating mass of the electric machine is designed as a secondary flywheel and the electric machine by means of the control device to a torsional vibration occurring at at least one operating point disturbing moment compensating compensation torque provided controllable.