Wabco Gmbh

Berend Kleen

Johann Lucas

Ingo Jovers

Robert Sohn

Thomas Stellmacher

Uwe Lentz

Reinhard Gocz

Andreas Rutsch

Frauke Rathjen

Andreas Schwarzer

Dieter Zimpel

Edzard Barghoorn

An electropneumatic control arrangement for an automatic vehicle level control system, particularly of a commercial vehicle, includes at least; a solenoid valve unit having at least two electropneumatic solenoid valves, a compressed air inlet for infeeding compressed air, at least one compressed air connection for at least one air bellows and electrical control inputs, and an electronic control unit for actuating the solenoid valve unit. The electronic control unit comprises control outputs for electrically connecting to the control inputs of the solenoid valve unit. A plug connector is configured on the housing of the solenoid valve unit, in which the electrical control inputs are disposed, and a plug connector is provided on the housing of the electronic control unit, in which the control outputs are disposed. The plug connectors are mechanically plugged into each other.

Electropneumatic control arrangement for an automatic vehicle level control system

A level control system controls the distance between the vehicle axles and the vehicle frame of a vehicle. The suspension is a full or partial air suspension, wherein the vehicle frame over the vehicle axles is supported via air suspension bellows. A vehicle inclination, i.e. a non-parallel alignment between vehicle frame and one or more of vehicle axles may occur as a result of various situations which may be dramatically different from one another. Uneven support of the vehicle represents one cause of vehicle inclination, for example, when one wheel of a vehicle axle is standing on the sidewalk. In order to avoid air losses, a vehicle level is not compensated for while the vehicle is stopped. Instead, the existing inclination is maintained and is entered into the control system as a target level. All level changes which occur due to changes in the load of the vehicle are compensated for by means of this prescribed target value. When the vehicle later starts to travel, the pressures in the air suspension bellows need to be modified only slightly, if at all, further conserving air consumption.

Level control system

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Hannover, Germany

Berend Kleen