MULTISTAGE ROW-PARALLEL DAMPER FOR A TORQUE CONVERTER

摘要

The invention relates to a method and device for dampening torques transmitted by the turbine of a torque converter to a gearbox. The inventive damper comprises the following: a) a drive unit connected to a motor; b) a first spring set consisting of drive springs; c) a second spring set consisting of two springs: d) a third spring set consisting of parallel springs; e) a sliding device and f) a driven unit. The springs of the first spring group are pressable together by a torque acting on the drive unit in a forward direction with respect to the driven unit and in the opposite direction towards the drive unit by a torque acting on the driven unit. The first and second spring groups are positioned in a row between the drive and driven units while a first mutual compression of the first spring group is carried out in the forward direction and the series arrangement is positioned in parallel to the third spring group between the drive and driven units while the second mutual compression of the first spring group is carried out. The first spring group is positioned in parallel to the third spring group, without the second spring group, between the drive and driven units while the third mutual compression of the third spring group is carried out. During the first mutual compression of the first spring group in the forward direction, the sliding device is locates between the drive and driven units and between the springs of the first and second spring groups. The inventive method consists a) in actuating the first and second spring groups in row between absorbed and delivered torques; b) in positioning the third spring group in a parallel position to the first and second spring groups in such a way that a torque greater than that of the step (a) is transmissible at each torsion angle degree band and c) in removing the second spring group from the row with the second spring group in such a way that the greater torque than that of the step (b) is transmissible at each torsion angle degree.