Patent ID: 6845988
Filing Date: 2005-01-25
Classification: B60G

Abstract:
1. A method of controlling the quantity of air in a closed, chargeable and emptiable pneumatic level control system of a vehicle, which level control system comprises at least one pressure sensor, one pump, at least one actuator, at least one storage reservoir and circuitry interconnecting these components, at least one level sensor, and a pressure sensor measuring the air pressure in the individual components of the level control system, said method comprising the steps of: providing a temperature sensor ( calculating the air mass of the level control system from the air pressures in the individual components ( calculating a vehicle-specific desired air mass and a desired air pressure from the desired level of the vehicle, the ambient temperature and the maximum possible change in level from the actual vehicle level, increasing the air mass in the level control system if the actual air pressure is below the desired air pressure, and reducing the air mass in the level control system if the actual air pressure exceeds the desired air pressure.