Fuel injection device

A fuel injection device, comprising:

• a valve closure element having a valve closure surface;
• a nozzle body extending along a longitudinal axis and having a valve seat surface, the valve seat surface cooperating with the valve closure surface to form a valve seat, wherein at least one fuel stream is sprayed out from the nozzle body when the fuel injection device is in an open position, the at least one fuel stream having a radial directional component with respect to the longitudinal axis of the nozzle body;
• and
• a sleeve body axially overlapping the sprayed—out at least one fuel stream in a direction of the longitudinal axis, the sleeve body having at least one impact surface,
• wherein the at least one impact surface at least one of has a fluted form and is inclined at a predefined angle with respect to a vertical plane which extends vertically with respect to the longitudinal axis,
• wherein the at least one fuel stream strikes the at least one impact surface;
• wherein the at least one impact surface of the sleeve body has a radially external end and at least partially circumferential detachment edge on the radially external end, and
• wherein, using a contour of the sleeve body, the at least partially circumferential detachment edge is undercut by at least partially circumferential groove in the sleeve body to form an acute edge angle at the at least partially circumferential detachment edge.

A fuel injection device, comprising:

• a valve closure element having a valve closure surface;
• a nozzle body extending along a longitudinal axis and having a valve seat surface, the valve seat surface cooperating with the valve closure surface to form a valve seat, wherein at least one fuel stream is sprayed out from the nozzle body when the fuel injection device is in an open position, the at least one fuel stream having a radial directional component with respect to the longitudinal axis of the nozzle body;
• and
• a sleeve body axially overlapping the sprayed—out at least one fuel stream in a direction of the longitudinal axis, the sleeve body having at least one impact surface,
• wherein the at least one impact surface at least one of has a fluted form and is inclined at a predefined angle with respect to a vertical plane which extends vertically with respect to the longitudinal axis,
• wherein the at least one fuel stream strikes the at least one impact surface;
• wherein the nozzle body has an axial blind bore, the valve closure element being axially movable in the axial blind bore, and
• wherein the nozzle body has a plurality of radial bores arranged in a circumferentially distributed manner, the radial bores extend through the nozzle body and open into the axial blind bore one of:
• at the valve seat surface, and
• downstream from the valve seat surface.