Fuel injection valve with a filter bush
AssigneeRobert Bosch GmbH
InventorDieter Maier
Life of this patent
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Abstract
A fuel injector (1) for fuel-injection systems of internal combustion engines has a solenoid coil (10); a valve needle (3) that is mechanically linked to the solenoid coil (10) and acted upon by a restoring spring (23) in a closing direction, in order to actuate a valve-closure member (4) which, together with a valve-seat face (6), forms a sealing seat; and a sleeve (24), which prestresses the restoring spring (23). The sleeve (24) is integrally formed with a filter element (25) to form a one-part, deep-drawn filter sleeve (34), which has through-flow openings (35) for filtering the fuel flowing through the fuel injector (1).
Claims5
A fuel injector (1) for fuel-injection systems of internal combustion engines, comprising a solenoid coil (10);
- a valve needle (3) that is mechanically linked to the solenoid coil (10) and acted upon by a restoring spring (23) in a closing direction, in order to actuate a valve-closure member (4) which, together with a valve-seat face (6), forms a sealing seat;
- and a sleeve (24), which prestresses the restoring spring (23), wherein the sleeve (24) is integrally formed with a filter element (25) to form a one-part, deep-drawn filter sleeve (34), which has through-flow openings (35) for filtering the fuel flowing through the fuel injector (1).
Dependencies are inferred from the claim text.