| 摘要 |
PCT No. PCT/EP95/00835 Sec. 371 Date Sep. 11, 1996 Sec. 102(e) Date Sep. 11, 1996 PCT Filed Mar. 7, 1995 PCT Pub. No. WO95/25021 PCT Pub. Date Sep. 21, 1995A driving device, in particular for driving the wheels of a motor vehicle, is provided with a drive and a mechanical gear downstream thereof and two hydraulically shiftable friction clutches (3) or friction brakes (4) for connecting the drive with the gear and for carrying out the functions of a parking brake. The friction clutches (3) or friction brakes (4) are connected, by control pressure lines (27, 28), with auxiliary pistons (15, 16) cooperating therewith, and when the accumulator piston (7) is actuated by the gearshift pistons (15, 16), the volume of the accumulator piston (7) is supplied by the control pressure lines (27, 28) to the gearshift pistons (15, 16) in order to uncouple them.
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