Patent ID: 6257836
Filing Date: 2001-07-10
Classification: F04B

Abstract:
A displacement control valve for a variable displacement type compressor, the compressor having a suction chamber, a crank chamber, and a control passage connecting the suction chamber to the crank chamber, wherein the valve changes the displacement of the compressor by opening and closing the control passage, the valve comprising:a valve chamber forming part of the control passage;a valve body located in the valve chamber for opening and closing the control passage;a pressure sensing member connected to the valve body, wherein the pressure sensing member positions the valve body according to the pressure in the suction chamber; anda solenoid for applying force to the valve body through a rod, wherein the force applied to the valve body by the solenoid depends on the level of current supplied to the solenoid such that an increase in the level of current supplied to the solenoid results in an increase in the force applied to the valve body by the solenoid in a direction to open the control passage.