Abstract: 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.

Abstract: The pressure controlling electromagnetic valve comprises an electric sub-assembly (1) provided with a coil (3) and the yoke thereof (4) associated with a hydraulic sub-assembly (2) provided with a seat (7), which a conduit (9) connecting two high and low-pressure fluid circuits (10, 11), respectively, passes through, sealing means (8) of said conduit (9), a pusher (12) sliding in a pole piece (19) and actuating said sealing means (8), a movable core (13) which is connected to the pusher (12) and whose displacement is controlled by the coil (3), wherein said electric (1) and hydraulic (2) sub-assembly form two distinct unit blocks.

Abstract: The electromagnetic actuator comprises an electric coil (1) mounted in a magnetic yoke (2), first and second pole parts (3, 4), which are connected to the yoke (2) and each of which extends near a free space (5) in which a magnetic core (6) is translationally displaceable by the action of the power supply to the electric coil (1) and the formation of different magnetic fields in the pole parts (3, 4). The inventive actuator consists of a tubular part (7), which is made of a magnetic material, delimits, at least partially, the free space, surrounds the magnetic core (6) for guiding the displacement thereof and has magnetically continues with the pole part(s) (3, 4) in such a way that the radial air gap between the magnetic core (6) and the magnetic pole part(s) (3, 4) is reduced.

Abstract: The pressure controlling electromagnetic valve comprises an electric sub-assembly (1) provided with a coil (3) and the yoke thereof (4) associated with a hydraulic sub-assembly (2) provided with a seat (7), which a conduit (9) connecting two high and low-pressure fluid circuits (10, 11), respectively, passes through, sealing means (8) of said conduit (9), a pusher (12) sliding in a pole piece (19) and actuating said scaling means (8), a movable core (13) which is connected to the pusher (12) and whose displacement is controlled by the coil (3), wherein said electric (1) and hydraulic (2) sub-assembly form two distinct unit blocks.