The Electro Dual Mass Flywheel - Efficient active damping of torsional drive train oscillations

Downsizing and Downspeeding are approaches to increase the efficiency of internal combustion engines. Unfortunately, these concepts amplify torsional oscillations of the drive train due to an increased non-uniformity of the indicated engine torque. Conventional passive torsional damping systems like the very common Dual Mass Flywheel reach their limits under these tightened circumstances. This article introduces a new, energy efficient active damping system. The structure and functionality are explained and a hardware prototype is presented.     «

Downsizing and Downspeeding are approaches to increase the efficiency of internal combustion engines. Unfortunately, these concepts amplify torsional oscillations of the drive train due to an increased non-uniformity of the indicated engine torque. Conventional passive torsional damping systems like the very common Dual Mass Flywheel reach their limits under these tightened circumstances. This article introduces a new, energy efficient active damping system. The structure and functionality are e...     »