Pneumatic suspension for tandem axle vehicle - has pneumatic bellows with oscillating lever lifting one axle to save fuel

摘要

The lever (32) is connected at one end to the base of a bellows (38) and it moves about a pivot point (34) which is solidly fixed to the vehicle chassis. The front of the lever has flat end (42) which penetrates the stirrup (46) holding a rod (44) at the top and the axle to be lifted (18) at the bottom. To lift the axle air is allowed to escape from a front bellows (26) while at the same time the rear bellows is filled and the lever pivots in direction (A) and the end part (42) raises a lifting bar (44) which allows a link (28) to pivot (about 30) lifting the axle (18).