| 摘要 |
A variable force solenoid operated pressure control valve (10) for controlling an hydraulically operated actuator in a fluid pressure circuit. The valve has a spool (20) in a straight spool bore (22) with fluid pressure chambers (32,36) at opposite ends. One spool end has a rod (50) press fitted therein with the rod (50) extending through the fluid pressure chamber (32) and operatively contacting the solenoid armature (16). The rod (50) creates an area differential on the spool ends (20) for providing an axial spool force proportional to the pressure in the fluid chambers (32,36) which are each connected by a metering passage (56,58) in the spool (20) to a recess (40) on the spool which is continuously connected to a control pressure port (28). A supply port (24) is connected to the recess (40) by a first valving land (42) on the spool (20) and an exhaust port (26) is connected to the recess (40) by a second valving land (44) on the spool (20). The metering passages (56,58) serve to attenuate transients. <IMAGE> |
