Loading patent…
AssigneeSaturn Electronics & Engineering, Inc.
InventorHamid Najmolhoda
Estimating the term…
A proportional variable force solenoid valve for controlling the pressure of a pressurized fluid in a fluid control system in proportion to the current level of an electrical input signal comprises a movable valve for controlling the pressure of pressurized fluid in the fluid control system and a solenoid for controlling movement of the valve in linear proportion to the current level of the electrical signal. The movable valve and the solenoid are disposed in a common substantially non-magnetic housing to provide a fluid control unit. The housing may comprise an aluminum casting for insertion in an aluminum transmission body. A movable armature of the solenoid may comprise a cylindrical shaped permanent magnet, rather than a ferromagnetic armature, in order to eliminate the need for a axially magnetized permanent magnet ring. A simplified armature suspension structure, fluid diverting valve mechanism, and electromagnetic flux washer are incorporated.
A proportional variable force solenoid valve for controlling the pressure of a pressurized fluid in a fluid control system in proportion to the current level of an electrical input signal, comprising a movable valve for controlling the pressure of pressurized fluid in said fluid control system, a solenoid for controlling movement of the movable valve, said solenoid comprising a spring biased armature, an electromagnetic coil for generating a variable electromagnetic field and means for generating a permanent magnetic field with which said variable electromagnetic field interacts to move said spring biased armature between first and second fluid pressure control positions, and a common housing in which said valve and said solenoid are disposed, said common housing comprising a substantially non-magnetic material having little, if any, magnetic permeability and having a housing wall disposed about an outer periphery of said coil without an intervening magnetically permeable housing between said housing wall and said outer periphery of said coil.
A proportional variable force solenoid valve for controlling the pressure of a pressurized fluid in a fluid control system in proportion to the current level of an electrical input signal, comprising:
A fluid control device for an electronic transmission, comprising:
A proportional variable force solenoid valve for controlling the pressure of a pressurized fluid in a fluid control system in proportion to the current level of an electrical input signal, comprising a movable valve for controlling the pressure of pressurized fluid in said fluid control system, a solenoid for controlling movement of the movable valve, said solenoid comprising a spring biased armature, an electromagnetic coil for generating a variable electromagnetic field and means for generating a permanent magnetic field with which said variable electromagnetic field interacts to move said spring biased armature between first and second fluid pressure control positions, and a common housing in which said valve and said solenoid are disposed, said common housing comprising a substantially non-magnetic material having little, if any, magnetic permeability and having a housing wall disposed about an outer periphery of said coil and devoid of a magnetically permeable housing between said housing wall and said outer periphery of said coil.
Dependencies are inferred from the claim text.