Patent ID: 7562698

Claim:
An air-conditioning system for a vehicle having an engine adapted to stop idling on predetermined stop conditions of the vehicle, the air-conditioning system comprising: a compressor for compressing a refrigerant circulated in a refrigeration cycle; a blowing fan for introducing outside air and producing air-conditioning air; an evaporator for cooling the air-conditioning air by causing the refrigerant to evaporate; an electric motor for driving the compressor when the idling of the engine is stopped; an evaporator temperature sensor for detecting a temperature at an outlet of the evaporator; motor speed control means for controlling a speed of the electric motor in correspondence with the detected evaporator outlet temperature; and evaporator temperature correction means for, when the engine idling is stopped and the blowing fan is introducing the outside air, correcting the evaporator outlet temperature, detected by the evaporator temperature sensor, to a lower temperature in correspondence with a temperature of the outside air and a temperature of water for cooling the engine.