Injection valve for an automotive engine comprising: - a valve body comprising a cavity and a fluid outlet portion, - a valve needle axially movable in the cavity, the valve needle preventing a fluid flow through the fluid outlet portion in a closing position and displaceable in an opening direction along a longitudinal axis to other positions for releasing the fluid flow through the fluid outlet portion, - an electro-magnetic actuator unit being configured to actuate the valve needle, wherein the actuator unit comprises - an armature which is arranged in the cavity and being axially moveable relative to the valve needle, the armature being operable to move the valve needle, - an acceleration device comprising a pole piece which is arranged in the cavity subsequent to the armature in the opening direction, the acceleration device being fixed to the cavity and being operable to move the armature by applying a magnetic force, - a deceleration device being arranged in the cavity, the deceleration device being configured to dampen or to avoid an impact of the armature onto the pole piece, - the valve body comprises a non-magnetic shell which extends circumferentially around the armature, - the acceleration device comprises at least one electro-magnet with a coil and a core, characterized in that the coil and the core are arranged on a side of the pole piece remote from the armature, - the pole piece is inserted into the non-magnetic shell and welded thereto in a fluid tight manner so that it hydraulically separates the armature from the coil and the core, and - the core comprises or consists of a soft magnetic composite which is composed of metal powder particles with an electrically isolating surface. - a valve body comprising a cavity and a fluid outlet portion, - a valve needle axially movable in the cavity, the valve needle preventing a fluid flow through the fluid outlet portion in a closing position and displaceable in an opening direction along a longitudinal axis to other positions for releasing the fluid flow through the fluid outlet portion, - an electro-magnetic actuator unit being configured to actuate the valve needle, - an armature which is arranged in the cavity and being axially moveable relative to the valve needle, the armature being operable to move the valve needle, - an acceleration device comprising a pole piece which is arranged in the cavity subsequent to the armature in the opening direction, the acceleration device being fixed to the cavity and being operable to move the armature by applying a magnetic force, - a deceleration device being arranged in the cavity, the deceleration device being configured to dampen or to avoid an impact of the armature onto the pole piece, - the valve body comprises a non-magnetic shell which extends circumferentially around the armature, - the acceleration device comprises at least one electro-magnet with a coil and a core, characterized in that the coil and the core are arranged on a side of the pole piece remote from the armature, - the pole piece is inserted into the non-magnetic shell and welded thereto in a fluid tight manner so that it hydraulically separates the armature from the coil and the core, and - the core comprises or consists of a soft magnetic composite which is composed of metal powder particles with an electrically isolating surface.