Patent ID: 6059538
Filing Date: 2000-05-09
Classification: F04B

Abstract:
A control valve in a variable displacement compressor that adjusts the discharge displacement in accordance with the inclination of a drive plate located in a crank chamber, wherein the compressor includes a piston connected to the drive plate, the piston being located in a cylinder bore, wherein the inclination of the drive plate varies according to the difference between the pressure in the crank chamber and the pressure in the cylinder bore, wherein the control valve regulates the difference between the pressure in the crank chamber and the pressure in the cylinder bore in accordance with an operating pressure, which is the pressure in a selected chamber of the compressor, the control valve comprising:a housing body;a valve body movably accommodated in the housing body to adjust the valve opening amount;a cap attached to the housing body to define a pressure chamber, wherein the pressure chamber is exposed to the operating pressure;a pressure sensing member located in the pressure chamber, wherein the pressure sensing member moves the valve body in accordance with the operating pressure in the pressure chamber; anda protector attached to the cap to protect the cap from impact.