Patent ID: 6918409
Filing Date: 2005-07-19
Classification: F02B,F02D,F02M,F16K,Y10T

Abstract:
1. A liquid flow metering valve system, comprising: an inlet opening for allowing an incoming flow of liquid; a valve sleeve having a central axial bore for receiving the incoming flow of liquid, a poppet valve seat, and an outlet opening extending outward from the central axial bore to the exterior of the valve sleeve; a moveable valve member comprising a spool configured for sliding axial movement within the central axial bore of the valve sleeve, and a poppet valve face formed in a distal end of the moveable valve member for closing off flow of liquid to the outlet opening of the valve sleeve when the moveable valve member is positioned so that the poppet valve face engages the poppet valve seat; wherein, when the moveable valve member is positioned so that the poppet valve face is withdrawn from engagement with the poppet valve seat so as to enable flow of liquid to the outlet opening, movement of the moveable valve member within the central axial bore of the valve sleeve changes the position of the spool relative to the outlet opening of the valve sleeve so as to regulate liquid output; and a solenoid comprising an armature and a winding, wherein the solenoid is coupled to a proximal end of the moveable valve member to axially move the moveable valve member within the central axial bore in response to a control current applied to the solenoid.