A driving device using temperature measurement, a driving method using temperature measurement and a dual-gas-source valve control system, wherein the device includes at least two thermocouple components; and a magnetic-drive assembly, wherein each thermocouple component is connected with the magnetic-drive assembly, the thermocouple components are capable of driving the magnetic-drive assembly to generate a magnetic flux according to an external temperature, and some of the thermocouple components drive the magnetic-drive assembly to generate a magnetic flux that is capable of being offset with a magnetic flux generated by the magnetic-drive assembly driven by the other of the thermocouple components.

A linear motor actuated valve assembly in which a linear motor enables electrical actuation and control of intake and exhaust valves of an internal combustion engine.

The invention relates to an electromagnetic actuator and a valve having such an actuator. The actuator has a first magnetic coil and a second magnetic coil, as well as at least one permanent magnet and an anchor that can be moved axially by the magnetic coils and the permanent magnet between a first and a second position, on which at least one spring device acts in the axial direction. The first and second magnetic coils as well as the first permanent magnet are disposed axially behind one another thereby, such that the first permanent magnet is disposed coaxially between the first and second magnetic coils.

A process component includes a first connection, a second connection, and an adjusting element arranged in a hollow space fluidically connecting the first connection to the second connection and that can be brought into a first position and second position in an axial direction within the hollow space. The component includes a permanent magnet, a first electrical coil, and a second electrical coil arranged in succession in the axial direction to create a simple process component whose size can be effectively scaled. The magnet, adjusting element, and a yoke form a first closed magnetic circuit in the first position and a second closed magnetic circuit in the second position. The first and second coil respectively compensate for the first circuit and the second circuit. The hollow space and adjusting element are shaped such that the valve can be penetrated by a fluid flow formed between the first and second connections.

A drive circuit for controlling a solenoid valve having a solenoid coil and a poppet that translates therein is provided. The drive circuit includes a supply bus, a return bus, a flyback circuit, and a switch. The supply bus is configured to couple the solenoid coil to a power supply and supply a coil current. The return bus is configured to provide a ground path for the coil current. The flyback circuit is coupled in parallel to only the solenoid coil. The flyback circuit includes only a bipolar diode. The switch is coupled in series with the solenoid coil and configured to couple and decouple the solenoid coil to the return bus.

An integral flapper and nozzle structure for a servo valve assembly whereby the flapper, orifices and nozzles are formed by sheets of metal formed into a single component.

A dual solenoid valve for a compressed fluid source may comprise a bobbin and a first solenoid coil located around the bobbin. A second solenoid coil may be located radially outward of the first solenoid coil. An insulating layer may be located between the first solenoid coil and the second solenoid coil. A plunger may be biased away from the bobbin.

A servo valve assembly includes a housing defining a cylindrical cavity having a central axis, and a spool disposed in the cavity and co-axially aligned with the central axis. A pair of transition portions define opposing conical cavity surfaces each connect a respective one of first and second cylindrical cavity portions with a third cylindrical cavity portion. The spool comprises a pair of blocking members projecting radially, and each of the blocking members defines a conical blocking surface opposing a respective one of the conical cavity surfaces to define a fluid flow passage therebetween. A cone angle of each conical blocking surface relative to the central is equal to a cone angle of the opposing conical cavity surface relative to the central axis. The spool is moveable along the central axis to vary a flow area of the flow passages between the conical blocking surfaces and the conical cavity surfaces.

Magnetic fluidic valves of the present disclosure may include a valve body having at least one cavity therein, a ferromagnetic gate transmission element disposed within the cavity, an inlet port, an outlet port, a permanent magnet configured to bias the gate transmission element to a closed position, and an electromagnetic coil configured to, upon actuation, overcome a magnetic force acting on the gate transmission element from the permanent magnet. The gate transmission element may be configured to move from the closed position blocking the inlet port to an open position unblocking the inlet port upon actuation of the electromagnetic coil. Various other fluidic systems and methods are also disclosed.

An Electronic Engine Controller (EEC) for a gas turbine engine. The EEC is configured to be connected to a solenoid valve, and configured to control the solenoid valve by providing a driving signal to either a first solenoid winding or a second solenoid winding of the solenoid valve, the first and second solenoid windings being magnetically coupled to one another by an armature of the solenoid valve. The armature is movable under the action of the driving signal to operate the solenoid valve. The solenoid winding of the first and second solenoid windings provided with the driving signal is a driving winding and the other solenoid winding of the first and second solenoid windings is a pick-up winding. When the EEC controls the solenoid valve via the driving winding by providing the driving signal thereto, it is further configured to sense a position of the solenoid valve via the pick-up winding by detecting a signal induced in the pick-up winding by the magnetic coupling.