Patent ID: 7210551
Filing Date: 2007-05-01
Classification: B60G

Abstract:
1. A method for operating a level control system of a motor vehicle which includes a control apparatus, a plurality of sensors for directly or indirectly determining the distances of the vehicle chassis to the axles of the vehicle wheels to obtain measured values for said distances and actuators for changing said distances, the method comprising: checking in said control apparatus as to whether said distances exceed predetermined limit values with said checking being performed by said control apparatus on the basis of said measured values in a desired-value actual-value comparison; determining if the vehicle is a slope and slant position impermissible for the safety of said motor vehicle from sensor data as to the speed (vehicle wheel rpm), longitudinal acceleration and transverse acceleration of said motor vehicle; actuating at least one of said actuators in response to a deviation of said distances from said limit values in order to obtain a level compensation in the sense of a horizontal alignment of said vehicle chassis when said motor vehicle is not disposed in an impermissible slope and slant position; and, preventing an automatic level compensating control when said motor vehicle is disposed in an impermissible slope and slant position.