Patent ID: 9574532
Date: 2017-02-21
CPC Classifications: F02M,F16K

Claim:
1. A valve assembly for an injection valve, comprising: a valve body including a central longitudinal axis, the valve body including: a cavity with a fluid inlet portion and a fluid outlet portion, and a chamber in which an electro-magnetic actuator unit is arranged, and a valve needle axially movable in the cavity, the valve needle preventing a fluid flow through the fluid outlet portion in a closing position of the valve needle, and releasing the fluid flow through the fluid outlet portion in further positions of the valve needle, an armature disposed in the chamber coupled to the valve needle, wherein the armature comprises a permanent magnetic material driven along the central longitudinal axis by energizing the electro-magnetic actuator unit, wherein the valve needle moves along the central longitudinal axis along with the armature, and a bellows surrounding at least a portion of the valve needle extending into the cavity and sealingly coupled to the valve body and to the valve needle, the bellows being configured to prevent a fluid flow between the cavity and the chamber.