Fuel injection valve
AssigneeRobert Bosch GmbH
InventorMartin Mueller
Life of this patent
Estimating the term…
Abstract
A fuel injector (1), especially a fuel injector for fuel injection systems in internal combustion engines, has a valve needle (3) whose valve-closure member (4) cooperates with a valve seat surface (6) to form a sealing seat, and has an armature (20) engaging with the valve needle (3), the armature (20) being arranged on the valve needle (2) in an axially movable manner and being damped by a damping element (32) including an elastomer. A ring space (37) is formed between damping element (32) and valve needle (3) which is filled with fuel, ring space (37) being in contact with a throttle gap (39).
Claims13
A fuel injector (1), especially a fuel injector for fuel injection systems in internal combustion engines, having a valve needle (3) whose valve-closure member (4) cooperates with a valve seat surface (6) to form a sealing seat, and having an armature (20) engaging with the valve needle (3), the armature (20) being arranged on the valve needle (3) in an axially movable manner and being damped by a damping element (32) made of an elastomer, and arranged between a flange (31) and the armature (20), wherein a ring-shaped depression (36) is formed on the flange (31) on which the damping element (32) is arranged, and a ring space (37) is formed, between the valve needle (3) and the damping element (32), which is filled with fuel, the ring space (37) being in contact with a throttle gap (39) at the valve needle (3).
Dependencies are inferred from the claim text.