CAPACITY CONTROL DEVICE OF VARIABLE DISPLACEMENT COMPRESSOR AND COMPRESSOR MODULE AND VEHICULAR AIR CONDITIONER

摘要

PROBLEM TO BE SOLVED: To provide a vehicular air conditioner for enabling an engine ECU to easily use load torque of a compressor as engine control data without preparing a load torque estimating map of the compressor with every car model. SOLUTION: A refrigerant circulating circuit of this vehicular air conditioner is composed of a compressor module CPM having the compressor CP and an external refrigerator circuit l. The external refrigerator circuit 1 is provided with a condenser 2, an expansion valve 3 and an evaporator 4. A fixed orifice 8a is arranged in the middle of a flow pipe 8 for communicating a delivery chamber 7 of the compressor CP with the condenser 2. The compressor CP is a type capable of changing delivery capacity by controlling pressure of a crankcase 15. The compressor module CPM is provided with a control valve 32 and a compressor ECU 77 for adjusting the pressure of the crankcase 15. The compressor ECU 77 controls the control valve 32 so as to operate the compressor CP with torque corresponding to a torque setting command required for the compressor CP from an air conditioner ECU 80 or the engine ECU 90.