Valve assembly for an injection valve and injection valve

DRIVE October 12, 2011
Source
The invention relates to a valve assembly (11) for an injection valve (10), comprising a valve body (12) including a central longitudinal axis (L), the valve body (12) comprising a cavity (18) with a fluid inlet portion (42) and a fluid outlet portion (40), a valve needle (20) axially movable in the cavity (18), the valve needle (20) preventing a fluid flow through the fluid outlet portion (40) in a closing position and releasing the fluid flow through the fluid outlet portion (40) in further positions, and an electro-magnetic actuator unit (36), The electro-magnetic actuator unit (36) is designed to actuate the valve needle (20). The electro-magnetic actuator unit (36) comprises an armature assembly (22, 23) axially movable in the cavity (18). The armature assembly (22, 23) has a first axial end (24a) facing the fluid inlet portion (42) and a second axial end (24b) facing the fluid outlet portion (40). The armature assembly (22, 23) comprises at least one aperture (48) extending from the first axial end (24a) of the armature assembly (22, 23) to the second axial end (24b) to enable a hydraulic coupling between the fluid inlet portion (42) and the fluid outlet portion (40). Furthermore, the invention relates to an injection valve (10) with a valve assembly (11).

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