Valve assembly and injection valve

An injection valve, comprising:

• a valve assembly 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,
• 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.

A valve assembly for an injection valve, comprising:

• a valve body with 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;
• 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,
• a bellows arranged between the valve body and the valve needle 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.