| 摘要 |
Device for motor vehicles with adjustable traction, comprising a hydraulically controlled adjusting member placed in the transmission path leading from a drive control pedal to an element for adjusting the vehicle engine, this adjusting member comprising a piston which may be displaced by the auxiliary pressure, characterised in that the piston of the adjusting member 1, 1' is positioned in a fixed housing 2, 27, the two end faces of the piston defining working chambers 4, 5, 37, 39, in that the piston 3, 30 is connected via one or more springs 8, 17, 28, 32 on the one hand to the drive control pedal 7, 7' and on the other hand to the adjusting element 10, 10' of the vehicle engine, and may be displaced by the drive control pedal 7, 7', in that when the adjusting member 1, 1' is in the rest position the two chambers 4, 5, 36, 37 located on the end faces of the piston 3, 30 communicate with the pressure compensating reservoir 25, 25' via multidirectional control valves 22, 22', 23, 23', and in that between the chambers 4, 5, 36, 37 located on the two end faces of the piston 3, 30 is a prestressed check valve 21, 45 which is opened by a push member 18, 38 close to the pedal, when the adjusting member 1, 1' is in the rest position and when the pedal 7, 7' is released, that is when the actuating force applied to the pedal is reduced. <IMAGE>
|
