Control valve for variable displacement compressor

摘要

A valve body (43) adjusts opening of a supply passage (28) in response to the position in a valve chamber (46). A pressure-sensitive member (54) is moved in accordance with the pressure difference (PdH-PdL) between two pressure monitoring points (P1, P2), which are located in an external refrigerant circuit. The movement of the pressure-sensitive member (54) affects the position of the valve body (43) such that the compressor displacement is changed to reduce fluctuations in the pressure difference (PdH-PdL). A solenoid (60) changes force applied to the valve body (43) so that a set pressure difference, which is a reference value for changing the position of the valve body (43) by the pressure-sensitive member (54), is changed.