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

US7396029B2 · kind B2 · utility

Assignee

• KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH · DE

Inventors

• Falk Hecker · Aichholzhof, DE
• Günther Fecht · Freiberg, DE
• Friedbert Röther · Cleebronn, DE
• Winfried Geiger · Rochlitz, DE

Key dates

• Filing date: Jun 10, 2005
• Grant date: Jul 8, 2008
• Expiry date: May 8, 2026

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60G2500/2021
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

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 on…