| 摘要 |
<p>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), the fluid inlet portion (42) being provided with a first step (43),
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 an open position, and
an electro-magnetic actuator unit (36) being designed to actuate the valve needle (20), the electro-magnetic actuator unit (36) comprising an armature (21, 22) axially movable in the cavity (18), wherein the armature (21, 22) comprises a first armature part (21) being fixedly coupled to the valve needle (20) and a second armature part (22) being axially movable relative to the first armature part (21), the second armature part (22) being designed in a way that the second armature part (22) is mechanically decoupled from the first armature part (21) by hitting the first step (43) when the valve needle (20) reaches its open position.</p> |
