Valve Assembly for a Fluid Injection Valve and Fluid Injection Valve

A fluid injection valve, comprising:

• a valve assembly for a fluid injection valve, the valve assembly having a longitudinal axis and comprising a valve seat, a valve disc and a valve stem, wherein;
• the valve seat comprises an orifice that is laterally offset from the longitudinal axis,
• the valve disc comprises a fluid passage which, in a first angular position of the valve disc, overlaps the orifice at an interface of the valve disc and the valve seat to establish a fluid path through the valve disc and the valve seat for dispensing fluid from the valve assembly,
• The valve disc is rotatable around the longitudinal axis with respect to the valve seat from the first angular position to a second angular position, wherein the valve seat and the valve disc mechanically interact to seal the orifice in the second angular position,
• the valve stem mechanically interacts with the valve disc to rotate the valve disc around the longitudinal axis, and
• the valve stem is axially movable with respect to the valve seat and rotationally fixed with respect to the valve seat, and wherein the valve stem is mechanically coupled to the valve disc such that an axial movement of the valve stem is converted to a rotational movement of the valve disc, and
• an actuator assembly configured to move the valve stem axially to thereby rotate the valve disc.

A fluid injection valve, comprising:

• a valve assembly, and
• an actuator assembly,
• wherein the valve assembly has a longitudinal axis and comprises a valve seat and a valve disc,
• wherein the valve seat comprises an orifice that is laterally offset from the longitudinal axis,
• wherein the valve disc comprises a fluid passage which, in a first angular position of the valve disc, overlaps the orifice at an interface of the valve disc and the valve seat to establish a fluid path through the valve disc and the valve seat for dispensing fluid from the valve assembly,
• wherein the valve disc is rotatable around the longitudinal axis with respect to the valve seat from the first angular position to a second angular position, wherein the valve seat and the valve disc mechanically interact to seal the orifice in the second angular position,
• wherein the valve assembly comprises a valve stem that mechanically interacts with the valve disc to rotate the valve disc around the longitudinal axis,
• wherein the valve assembly comprises a valve body having a cavity extending from a fluid inlet end to a fluid outlet end, wherein the valve seat is arranged at the fluid outlet end and positionally and rotationally fixed with respect to the valve body, wherein the longitudinal axis extends from the fluid inlet end to the fluid outlet end, and wherein the valve stem and the valve disc are arranged in the cavity,
• wherein the actuator assembly comprises an armature that is axially displaceable with respect to the valve body and rotationally fixed with respect to the valve body,
• wherein the valve stem mechanically interacts with the valve disc such that a rotation of the valve stem around the longitudinal axis effects a rotation of the valve disc around the longitudinal axis, and
• wherein the armature is mechanically coupled to the valve stem such that an axial movement of the armature is converted to a rotational movement of the valve stem and the valve disc.