Injection valve

An injection valve, comprising:

• an injector assembly comprising:
• an injector body having a recess that extends in a direction of a longitudinal axis of the injector body;
• and
• a nozzle needle arranged in an axially movable manner in the recess of the injector body, the nozzle needle configured to prevent a fluid flow through at least one injection orifice when in a closed position and to otherwise permit the fluid flow;
• an actuator unit arranged in the recess of the injector body, the actuator body comprising an actuator housing in which an actuator element is arranged, the actuator housing having an end surface on an axial end facing towards the injection orifice, the end surface being mechanically coupled to a step formed in the injector body via a ring element arranged axially between the end surface of the actuator housing and a surface of the step firmed in the injector body, the ring element having a radial width extending from an radially outer ring surface to an radially inner ring surface;
• wherein at least one radially extending passage recess is defined in the step, the at least one radially extending passage recess extending in a radial direction across the radial width of the ring and beyond both the radially outer ring surface and the radially inner ring surface, the at least one radially extending passage providing a hydraulic coupling between a ring interior space arranged in the ring element and a ring exterior space arranged outside the ring element.

An injection valve, comprising:

• an injector assembly comprising:
• an injector body which has a recess that extends in a direction of a longitudinal axis of the injector body;
• and
• a nozzle needle arranged in an axially movable manner in the recess of the injector body, the nozzle needle configured to prevent a fluid flow through at least one injection orifice when in a closed position and to otherwise permit the fluid flow;
• an actuator unit arranged in the recess of the injector body, the actuator unit comprising an actuator housing in which an actuator element is arranged, the actuator housing having an end surface on an axial end facing towards the injection orifice, the end surface being mechanically coupled to a step formed in the injector body via a hexagonal ring element arranged axially between the end surface of the actuator housing and the step formed in the injector body;
• and
• a hydraulic coupling between a ring interior space arranged in the hexagonal ring element and a ring exterior space arranged outside the hexagonal ring element, the hydraulic coupling provided by one of:
• a passage orifice defined in each of the six sides of the hexagonal ring element;
• and
• a plurality of radially extending passage recess defined in the step, each radially extending passage recess extending in a radial direction across a radial width of one of the sides of the hexagonal ring element.