Patent ID: 6883340

Claim:
A vehicle air conditioning apparatus for controlling an air conditioning cycle having a compressor, a fan motor activated by a power source composed of an alternator driven by an engine, and a fan driven by the fan motor for cooling a condenser, the apparatus comprising: a compressor-volume equivalent-value detector detecting a compressor-volume equivalent-value corresponding to a volume of the compressor; a fan motor controller configured to control a fan motor load of the fan motor; and a control map setter setting a control map, that determines the fan motor load for the compressor volume detected by the compressor-volume equivalent-value detector, in a way to minimize a total engine load torque formed by a total sum of an engine load torque caused by the compressor and the engine load torque caused by the fan motor, wherein control of the fan motor load by the fan motor controller is dependent on the compressor-volume equivalent-value using the compressor-volume equivalent-value and the control map set by the control map setter.