Patent ID: 6062824
Filing Date: 2000-05-16
Classification: F04B,F16K

Abstract:
A control valve for adjusting the amount of fluid that flows from a high-pressure zone to a pressurized chamber through a fluid passage in accordance with an operating pressure applied to the control valve, the control valve comprising:a housing, the housing including a valve hole and a valve chamber, which are located in the fluid passage, wherein the valve hole communicates with the valve chamber when the valve is open;a movable valve body located in the valve chamber to face the valve hole;a reacting member for reacting to the operating pressure;a first rod located between the reacting member and the valve body for transmitting motion from the reacting member to the valve body;a solenoid located on the opposite side of the valve body from the reacting member, the solenoid including a plunger chamber and a movable plunger located in the plunger chamber;a second rod located between the plunger and the valve body, wherein the plunger urges the valve body in one direction through the second rod in accordance with electric current supplied to the solenoid; andwherein the valve chamber and the plunger chamber are exposed to the pressure of one of the high-pressure zone and the pressurized chamber, and the valve hole is exposed to the pressure of the other.