Electromagnetically operable valve
AssigneeRobert Bosch GmbH
InventorFerdinand Reiter
Life of this patent
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Abstract
An electromagnetically operable valve having a core which is surrounded by a magnet coil and having an armature by means of which a valve closing body which interacts with a stationary valve seat is operated, the magnet coil is at least partially surrounded by a metallic housing jack, which closes the magnetic circuit, is closely connected at its upper end to the core and connected at its lower end to the connecting part, and overhangs the magnet coil at least in the axial direction. This valve is particularly suitable for an injection valve in a fuel injection system.
Claims19
An electromagnetically operable injection valve for fuel injection systems of internal-combustion engines, having a core (1) coaxial with a longitudinal axis (5) of said valve, said core having a first end and a second end, said core is surrounded by a magnet coil which is part of a magnetic circuit, an armature (12) connected to a valve closing body by means of which said valve closing body (10) is operated to interact with a stationary valve seat (15), a tubular metallic intermediate part (6) having a first end and a second end, said first end of said intermediate part is closely connected to said second end of the core facing the armature and said second end of said intermediate part is connected to a tubular connecting part (8), a metallic valve seating body (14) which includes the stationary valve seat (15), said valve seating body is attached to tubular connecting part at a lower end facing away from the intermediate part, and having a plastic sheath (22) which surrounds an upper end of the valve facing away from the valve seating body, the valve is at least partially surrounded in a direction of the longitudinal axis of the valve and is completely surrounded in a circumferential direction by a metallic housing jacket (3) which closes the magnetic circuit, the metallic housing jacket is connectd to said first end of the core (1) at an upper end (35) and to the connecting part (8) at a lower end (36),and overhangs the magnet coil (2) at least in the axial direction.
Dependencies are inferred from the claim text.