Fuel injection valve with a filter bush
AssigneeRobert Bosch GmbH
InventorDieter Maier
Life of this patent
Estimating the term…
Abstract
A fuel injector for fuel-injection systems of internal combustion engines has a solenoid coil; a valve needle that is mechanically linked to the solenoid coil and acted upon by a restoring spring in a closing direction, in order to actuate a valve-closure member which, together with a valve-seat face, forms a sealing seat; and a sleeve, which prestresses the restoring spring. The sleeve is integrally formed with a filter element to form a one-part, deep-drawn filter sleeve, which has through-flow openings for filtering the fuel flowing through the fuel injector.
Claims5
A fuel injector for a fuel-injection system of an internal combustion engine, comprising:
- a solenoid coil;
- a restoring spring;
- a valve-closure member;
- a valve-seat face that forms a sealing seat with the valve-closure member;
- a valve needle that is operatively linked to the solenoid coil and acted upon by the restoring spring in a closing direction in order to actuate the valve-closure member;
- a sleeve that prestresses the restoring spring;
- and
- a filter element that is integrally formed with the sleeve to form a one-part, deep-drawn filter sleeve that includes directly in a wall thereof through-flow openings for filtering a fuel flowing through the fuel injector.
Dependencies are inferred from the claim text.