Patent ID: 7571868

Claim:
A fuel injection valve for an internal combustion engine, comprising: a connection piece for a fuel-supply line, wherein the connection piece is connected to a valve opening of a valve-seat body via a fuel flow path; a valve-seat support, wherein the valve-seat body having the valve opening is fixed in place on the valve-seat support; a valve member which is situated inside the valve-seat support and controls the valve opening; a solenoid which actuates the valve member, wherein the solenoid includes a magnetic armature situated on the valve member, a magnetic core which is coaxial with respect to the magnetic armature, a solenoid coil surrounding the magnetic core, and a yoke element which closes a magnetic circuit via the magnetic core and magnetic armature; and a plastic coat which encloses the connection piece, the solenoid and the valve-seat support; wherein: the connection piece and the valve-seat support are made of plastic and configured as one-piece plastic housing together with the plastic coat; the yoke element is formed by a metallic magnetic material extrusion coat of the solenoid coil; the solenoid coil has an excitation winding that is directly extrusion-coated by the metallic magnetic material extrusion coat, such that the excitation winding is enclosed by the yoke element and such that the yoke element adjoins the magnetic core in a gapless manner and ends in front of the magnetic armature with a gap clearance, the magnetic armature being directly guided in the yoke element; and the plastic coat of the plastic housing completely encloses the yoke element at a side of the yoke element that faces away from the excitation winding.