Method for changing power transmission belt tension of endless drive, particularly endless belt drive in motor vehicle, by electrically actuated system, involves operating spring pretension on spring by electrically actuated system

摘要

The method involves operating spring pretension on a spring by an electrically actuated system. The spring is arranged between a base plate and a working tappet (2) of the tensioning device at lower pretension. The working tappet is rotated against the base plate. The spring tension is changed and so the power transmission belt tension is changed indirectly. An independent claim is included for a device for changing power transmission belt tension of an endless drive, particularly an endless belt drive at a motor vehicle motor.