| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a discharge control system for a variable displacement compressor of a simple structure, which greatly extends the control range while setting suction pressure and control pressure as controling objects. <P>SOLUTION: The discharge displacement control system A of a variable displacement compressor has: a target pressure setting means 402A setting a target of either pressure in a suction chamber or pressure in a crank chamber, based on a target air temperature at the evaporator exit detected by means 510 for detecting air temperature at the evaporator exit and on a target air temperature at the evaporator exit set by means 512 for setting a target air temperature at the evaporator exit; a discharge pressure detection means 500 detecting pressure of refrigerant in a high-pressure region; and electric current regulation means 404, 406 regulating electric current supplied to a solenoid 316 of a displacement control valve based on both pressure of the refrigerant in the high-pressure region detected by the discharge pressure detection means 500 and the target pressure set by the target pressure setting means 402A. <P>COPYRIGHT: (C)2009,JPO&INPIT |
