Borgwarner Inc.

Gillian Escandell

Gérard Desaint

Jean Armiroli

Aimé Goubely

Pascal Gantelme

Luca Cassini

Eric Passolunghi

Gérard Garcia

Bruno Lhermitte

The electromagnetic actuator comprises an electric coil mounted in a magnetic yoke, first and second pole parts, which are connected to the yoke and each of which extends near a free space in which a magnetic core is translationally displaceable by the action of the power supply to the electric coil and the formation of different magnetic fields in the pole parts. The inventive actuator consists of a tubular part, which is made of a magnetic material, delimits, at least partially, the free space, surrounds the magnetic core for guiding the displacement thereof and has magnetically continues with the pole parts in such a way that the radial air gap between the magnetic core and the magnetic pole parts is reduced.

Electromagnetic actuator comprising a magnetic tube and used for actuating a hydraulic or pneumatic valve

The pressure controlling electromagnetic valve comprises an electric sub-assembly () provided with a coil () and the yoke thereof () associated with a hydraulic sub-assembly () provided with a seat (), which a conduit () connecting two high and low-pressure fluid circuits (), respectively, passes through, sealing means () of said conduit (), a pusher () sliding in a pole piece () and actuating said sealing means (), a movable core () which is connected to the pusher () and whose displacement is controlled by the coil (), wherein said electric () and hydraulic () sub-assembly form two distinct unit blocks. Said blocks are rotatably mounted with respect to each other by assembling the hydraulic block () in the conduit, which passes through the electromagnetic block (), a locking washer () is arranged on an end of the conduit for preventing any axial displacement of the hydraulic block () in one direction and a shoulder () is arranged on the other end of said conduit for preventing the displacement of said hydraulic bloc () in the other direction by contacting the limit stop () thereof and a elastic washer () is inserted between the shoulder () and the limit stop ().

Pressure-controlling electromagnetic valve for distinct electromagnetic and hydraulic units

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Nice, France

Gillian Escandell