Variable-capacity compressor control valve

A variable-capacity compressor control valve comprising:

• a valve body including a valve chamber with a valve orifice, a suction pressure inlet/outlet port communicating with a suction chamber of a compressor, a discharge pressure introduction port arranged upstream of the valve orifice and communicating with a discharge chamber of the compressor, and a crank pressure inlet/outlet port arranged downstream of the valve orifice and communicating with a crank chamber of the compressor;
• a main valve element adapted to open or close the valve orifice;
• an electromagnetic actuator including a plunger, the plunger being adapted to move the main valve element in a direction to open or close the valve orifice;
• a pressure-sensitive chamber adapted to receive a suction pressure from the compressor via the suction pressure inlet/outlet port;
• a pressure-sensitive reaction member adapted to urge the main valve element in the direction to open or close the valve orifice in accordance with a pressure in the pressure-sensitive chamber;
• an in-valve large-opening release passage adapted to release a crank pressure in the crank chamber to the suction chamber of the compressor via the suction pressure inlet/outlet port;
• a sub valve element adapted to open or close the in-valve large-opening release passage along with a movement of the plunger;
• and
• an in-valve small-opening release passage having a smaller opening degree than that of the in-valve large-opening release passage, the in-valve small-opening release passage being adapted to release the crank pressure in the crank chamber to the suction chamber of the compressor via the suction pressure inlet/outlet port,
• wherein:
• the in-valve small-opening release passage is adapted to be opened or closed as the main valve element is moved along with a movement of the plunger, and is adapted to be opened before the in-valve large-opening release passage is opened by the sub valve element.