| 摘要 |
857,039. Preventing lateral canting. DAIMLER-BENZ A.G. Sept. 16, 1959 [Sept. 26, 1958], No. 31568/59. Class 108(2). A compensating pneumatic suspension for motor vehicles comprises compensating pneumatic springs 7 which act as dampers for pneumatic main springs 5 during straight-ahead travel, having a control device 8 adapted to supply compressed air to the compensating springs on the inside of a curve and to connect those on the outside to atmosphere. The control device 8 consists of a bore 20 containing a control slide valve 22 with end piston parts 21 abutting against disc valves 23 which are disposed in valve chambers 23a and normally close the bore 20. Each chamber 23a is connected to a compensating spring by pipes 9, 10, and also to atmosphere through a valve 25 and port 28. The valve 25 has a small central aperture which lies opposite a small disc valve 24. A compressed air supply pipe 11 and ducts 30 lead from a reservoir chamber to the bore 20. When the vehicle is set for straight-ahead travel, the control valve device is as shown in Fig. 3. Springing movements cause air to be drawn in from, and expelled out to the atmosphere with damping action through the port 28. When the vehicle goes round a curve, e.g. to the left, a pendulum 26 swings sideways in the direction of the arrow due to the centrifugal force, moving the valve 22 to the right. The right hand piston part 21 opens valve 23 and closes valve 24, and on further deflection uncovers the supply duct 30 so that compressed air flows to the compensating spring 7 on the inside of the curve. The expansion of the spring 7 causes the vehicle chassis to move towards the axle and the centre of gravity of the vehicle is lowered. When the vehicle has rounded the curve the pendulum 26 swings back to its original position and the control device resumes its position shown in Fig. 3. The pneumatic springs 5 may be replaced by helical springs. |
