Patent ID: 8757211
Filing Date: 2014-06-24
Classification: B60T,F15B,F16K,G05D,Y10T

Abstract:
1. A flow control valve, comprising: a valve housing having a fluid inlet and first and second outflow openings; a control piston guided for axial displacement in said valve housing and selectively actuating first and second fluid-conducting connections between said fluid inlet and said first and second outflow openings, respectively, said control piston having piston control surfaces to which fluid pressure is effectively applied; a proportional solenoid having an armature acting on said control piston; a pressure detecting piston serving for actuation of said armature on said control piston and having detecting control surfaces yielding when said pistons are pulled away from each other; and a pressure detecting chamber in said valve housing and in fluid communication with said fluid inlet via a pressure detecting duct, fluid pressure prevailing on a remaining control surface of said control piston in said pressure detecting chamber applying a force to said pressure detecting piston and said control piston in a direction providing relief to said proportional solenoid.