Electromagnetically actuatable valve
AssigneeRobert Bosch GmbH
InventorsRudolf Babitzka, Ferdinand Reiter, Peter Romann
Life of this patent
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Abstract
A connecting tube connected at one end to an armature of a fuel injection valve having a valve closing element secured to its other end. The connecting tube is easy to manufacture, it is simple to assemble, it has minimal weight and maximum strength. The connecting tube is resilient elastic and has openings along substantially its entire length and is easy to manufacture by rolling up a sheet-metal blank or by using a rigid spring element with spaced spring coils.
Claims24
An electromagnetically actuatable valve in a fuel injection valve for fuel injection systems in mixture-compressing internal combustion engines having externally supplied ignition, said fuel injection valve including a connection neck (1) that forms a fuel inlet, a core (2) formed on an inner end of said connection neck, said core is surrounded by a magnet coil (3), an armature (12) oriented axially toward one end of said core (2), an outer connecting part (39) connected at an upper end to said core (2), said outer connecting part including an inner bore (41), an outlet including a valve seat body (8) and a valve seat (9) secured to a lower end of said connecting part and a hollow inner connecting element coaxial with said outer connecting part (39) disposed concentrically to a longitudinal valve axis (4), said hollow inner connecting part firmly joined at one end to the armature and firmly joined at its other end to a valve closing element, and said hollow inner connecting element (11;
- 36) is formed of an axially resilient elastic material with at least one opening along its length, said fuel being communicated from said fuel inlet through said cores to an upstream end of said inner connecting element and through said at least one opening to said valve seat, said armature, inner connecting element and valve closing element being movable between positions permitting and preventing fuel flow through said outlet.
Dependencies are inferred from the claim text.