Patent ID: 6688121
Filing Date: 2004-02-10
Classification: B60H,F25B

Abstract:
A controlled compressor apparatus for use in an engine-powered vehicle, in which the engine is stopped when the vehicle comes to a temporary halt, the apparatus comprising:a variable displacement compressor for compressing refrigerant, wherein the compressor is part of a refrigeration apparatus, and wherein the compressor can be driven by engine torque; a battery-powered motor, wherein the motor can drive the compressor; a current detector for detecting the level of an electric current supplied to the motor; a control unit for selecting the engine or the motor to drive the compressor and for controlling the displacement of the compressor, wherein a predetermined relationship between the displacement of the compressor and the current supplied to the motor is stored in the control unit, and the control unit controls the displacement of the compressor according to the predetermined relationship based on the current detected by the current detector, wherein the control unit minimizes the displacement of the compressor before the motor drives the compressor.