Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh

Knorr-Bremse Systeme Fur Nutzfahrzeuge Gmbh

Winfried Geiger

Falk Hecker

Friedbert Roether

Kornel Kantor

Friedbert Röther

Guenther Fecht

Günther Fecht

Jürgen Stocker

An air-suspension system for vehicles, in particular for commercial vehicles, including at least one air-bellows valve assigned to an air-spring bellows or a group of air-spring bellows of the front axle for individually aerating and venting this air-spring bellows or this group of air-spring bellows; at least one air-bellows valve assigned to an air-spring bellows or a group of air-spring bellows of the rear axle for individually aerating and venting this air-spring bellows or this group of air-spring bellows; as well as at least one central aeration valve for supplying the air-bellows valves assigned to the air-spring bellows of the front axle and the rear axle with compressed air from a compressed-air supply; and at least one central venting valve for exhausting compressed air from the air-bellows valves assigned to the air-spring bellows of the front axle and the rear axle, to an air vent. The system provides that the compressed-air communication between, on one side, the compressed-air supply, the central aeration valve, and the at least one air-bellows valve assigned to the front axle and, on the other side, the air vent, the central venting valve, and the at least one air-bellows valve assigned to the rear axle take place via at least one throttle.

Air-suspension system for vehicles, having a throttle

An air-suspension device for vehicles, e.g., commercial vehicles, includes a valve block that is assigned to a rear axle and contains a central valve for aerating and venting air-spring bellows of the rear axle, and a valve block assigned to a front axle for aerating and venting air-spring bellows of the front axle. The central valve of the valve block assigned to the rear axle selectively connects: a) a compressed-air supply to the air-spring bellows of the rear axle and to a supply-pressure connection of the valve block assigned to the front axle; or b) the supply-pressure connection of the valve block assigned to the front axle and the air-spring bellows of the rear axle to an air vent. The valve block assigned to the front axle has a pneumatic pilot-operation connection for pneumatic-electric pilot operation. The pneumatic pilot-operation connection of the valve block assigned to the front axle is connected to a pressure outlet of a selector-valve device, of which one pressure inlet is connectable, via the central valve of the valve block assigned to the rear axle, either to the compressed-air supply or to the air vent, and the other pressure inlet is connectable to at least one of the air-spring bellows of the front axle. The selector-valve device switches through, in each instance, the higher of the pressures applied to its pressure inlets to the pressure outlet. By this arrangement, the need for pneumatic lines is eliminated.

Air-suspension device for vehicles, in particular for commercial vehicles

Growing community of inventors

Muehlacker, Germany

Winfried Geiger