Patent ID: 6715303
Filing Date: 2004-04-06
Classification: B60H,F02D,F25B

Abstract:
An air conditioner for motor vehicles, the motor vehicles perform a fuel cut control to cut off fuel supply to a vehicle engine in vehicle deceleration, the air conditioner comprising:a compressor driven by the vehicle engine, the compressor being a variable displacement type and being component of a refrigeration cycle; an evaporator which is a component of the refrigeration cycle, and cools air to be supplied to a vehicle compartment; and a controller which controls the displacement of the compressor, wherein the controller controls the displacement on the basis of a cooling degree of the evaporator when the vehicle engine is supplied with fuel, the controller performs a forced reduction control of the displacement by reducing the displacement to a predetermined small value when the fuel cut control is performed, and the controller sets a time period for the forced reduction control such that the time period is shortened as a thermal load for cooling is increased.