High flow solenoid control valve
First Claim
1. A hydraulic fluid solenoid valve, comprising a one-piece member forming a solenoid coil bobbin region and an integral check valve-receiving region having a check valve-receiving receptacle communicated to a fluid exhaust port, a solenoid armature, a fluid control valve movable relative to a fluid control port in response to armature movement, a check valve disposed in said receptacle, and a solenoid coil on the coil bobbin region for receiving electrical signals to control armature movement.
3 Assignments
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Accused Products
Abstract
An engine oil solenoid actuated control valve includes a molded one-piece member that defines a check valve-receiving region and a coil bobbin region of the solenoid. The check valve-receiving region includes an integral check valve-receiving receptacle associated with an exhaust port of the control valve. A check valve is received in the receptacle. A solenoid armature is received in the coil bobbin region on which a solenoid coil is wound. The molded one-piece member receives a fluid port-forming sleeve member that provides a supply port and control port. A spool valve is received in the port-forming sleeve member and includes a spool valve end connected to the armature of the solenoid. The spool valve includes first and second lands that are moved relative to the respective fluid supply port and control port to control fluid flow at the control port. A fast response, high flow rate is provided by a preselected gap provided between the end of the armature and a pole piece in the bobbin region together with an annular control port configuration.
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Citations
12 Claims
- 1. A hydraulic fluid solenoid valve, comprising a one-piece member forming a solenoid coil bobbin region and an integral check valve-receiving region having a check valve-receiving receptacle communicated to a fluid exhaust port, a solenoid armature, a fluid control valve movable relative to a fluid control port in response to armature movement, a check valve disposed in said receptacle, and a solenoid coil on the coil bobbin region for receiving electrical signals to control armature movement.
- 4. A method of making a hydraulic fluid solenoid actuated valve, comprising providing a one-piece member defining a solenoid coil bobbin region and an integral check valve-receiving region having a check valve-receiving receptacle communicated to a fluid exhaust port, disposing a sleeve member having a supply port and control port and a fluid control valve in said one-piece member, disposing a check valve in said receptacle, disposing a solenoid coil on the coil bobbin region, and disposing a solenoid armature in a bore of the coil bobbin region.
- 7. A hydraulic fluid solenoid valve, comprising a one-piece member forming a solenoid coil bobbin region and an integral check valve-receiving region having a check valve-receiving receptacle communicated to a fluid exhaust port, said one-piece member including an end proximate the check valve-receiving region with said end receiving a fluid port-forming sleeve member that provides a fluid supply port and a fluid control port, a solenoid armature, a fluid control valve movable relative to the control port in response to armature movement, a check valve disposed in said receptacle, and a solenoid coil on the coil bobbin region for receiving electrical signals to control armature movement.
- 10. The valve of claim 13 wherein a preselected gap is provided between an end of the armature and a pole piece in the bobbin region to define a spool valve open position relative to the control port.
Specification