Abstract: A method for controlling a motor vehicle air conditioning system is described. The motor vehicle air conditioning system comprises a refrigeration circuit including a refrigerant compressor, a condenser, an evaporator and a throttle device arranged upstream of the evaporator. The condenser is associated with a ventilating fan and the evaporator is associated with a blower. The compressor capacity, the condenser capacity and the evaporator capacity are directly or indirectly sensed by sensor means and supplied as electrical variables to an electronic control circuit which logically combines these input signals and generates output signals in dependence on at least two of these capacity values and including further parameters. The control circuit acts on electrically controllable acturators for influencing the compressor capacity, the condenser capacity and/or the evaporator capacity.

Abstract: An apparatus for the air-conditioning of the interior of automobiles, with a refrigerant circuit, including a low-pressure part and a high-pressure part and in which vaporous refrigerant is drawn off from the evaporator by a compressor and, while experiencing an increase in pressure, the refrigerant is fed to a condenser for cooling and condensation. The condensed refrigerant is collected in a collecting vessel from which it can be diverted via an expansion valve into the evaporator while experiencing a pressure drop and cooling. A pressure-relief valve witha blow-out outlet is proided between the compressor and the condenser in the high-pressure part of the refrigerant circuit. The blow-out outlet of the pressure-relief valve is connected to an intermediate reservoir for the escaping refrigerant.