Bayerische Motoren Werke Aktiengesellschaft

Michael Heil

Robert Salzberger

Stefan Oberberger

Mattias Bruce

Karl-Heinz Eder

Irina Roth

A method and apparatus controls and/or regulates the evaporator temperature of an air conditioning system in a motor vehicle in cooling mode. When an outside air temperature exceeds a predetermined limit value, the evaporator temperature is controlled and/or regulated to a predetermined minimum evaporator temperature until a predetermined desired temperature in the interior of the vehicle is reached. After reaching the predetermined desired temperature in the interior of the vehicle, the evaporator temperature is increased until a predetermined interior humidity in the vehicle is reached, or the interior temperature is higher than the predetermined desired temperature for the interior of the vehicle.

Method for controlling and/or regulating the evaporator temperature of an air conditioning system in a motor vehicle

A method for determining the desired ventilation air temperature of an automatic heating and air-conditioning system of a vehicle having an opening top is described. The open or closed state of the top of the vehicle is detected, and the heating and air-conditioning system is controlled and/or regulated in a number of different ways as a function of the state of the top. In the open state of the top, the desired ventilation air temperature is determined as a function of the speed of the vehicle. Also, in the open state of the top the desired ventilation air temperature is determined in such a manner that the top-closed desired ventilation air temperature is increased by a speed-dependent offset value.

Method for determining the desired ventilation air temperature of an automatic air-conditioning system in a convertible

In a method for automatically controlling the temperature of the interior of motor vehicles via an electronically controlled air-conditioning system having an evaporator, devices for adjusting the fresh-air fraction and the circulating-air fraction in the vehicle interior, as well as devices for sensing the evaporator temperature, the interior temperature and the outside-air temperature, the recirculating-air fraction is increased when the following occurs: recirculating-air fraction is lower than 100%, the deviation of the actual interior temperature from the desired interior temperature exceeds a defined first threshold, the outside temperature remains essentially constant, and the evaporator temperature rises.

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Forstinning, Germany

Michael Heil