Capacity control valve and capacity control valve control method

A capacity control valve that controls a flow rate or a pressure of a variable capacity compressor according to a valve opening of a valve unit, characterized by comprising:

• a valve body including first communication passages that pass fluid under a first pressure, second communication passages that are arranged adjacent to the first communication passages and pass fluid under a second pressure, third communication passages that pass fluid under a third pressure, and a main valve seat that is disposed in a valve hole communicating the second communication passages and the third communication passages;
• a pressure-sensitive element that is arranged in the valve body on the side of the third communication passages and extends and contracts in response to an ambient pressure;
• a valve element including an intermediate communication passage that communicates the first communication passages and the third communication passages, a main valve portion that is separated from and comes into contact with the main valve seat to open and close the valve hole, and an auxiliary valve portion that is separated from and comes into contact with the pressure-sensitive element to open and close the intermediate communication passage;
• a solenoid that drives a rod;
• a first biasing member that biases in a valve closing direction of the main valve portion;
• and
• a second biasing member that biases in a valve opening direction of the main valve portion,
• wherein that a biasing force of the second biasing member is larger than a biasing force of the first biasing member, that the rod moves relative to the valve element to press the pressure-sensitive element, that the second biasing member is arranged in the intermediate communication passage, and that the second biasing member is disposed between a flange portion of a head portion of the pressure-sensitive element and a stepped portion formed on the rod.