| 摘要 |
<p>The invention relates to a valve assembly (11) for an injection valve (10), comprising a valve body (14) including a central longitudinal axis (L), the valve body (14) 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, the valve needle (20) comprising a ring element (23) extending in radial direction and being arranged at an axial end (21) of the valve needle (20) facing away from the fluid outlet portion (40), and an electro-magnetic actuator unit (36) being designed to actuate the valve needle (20). The electro-magnetic actuator unit (36) comprises an armature (22) axially movable in the cavity (18). The armature (22) comprises a recess (28) taking up the ring element (23) and a protrusion (29) extending into the recess (28) in radial direction. A spring element (46) is arranged in the recess (28) axially between the ring element (23) and the protrusion (29) of the armature (22).</p> |
