초록 ▼

A valve needle includes a valve needle section which connects the armature section and the valve closing element section, the valve needle section having a solid construction. In order to ensure that the fuel flows in the direction of the valve seat, at least two axial grooves are provided in the ar

A valve needle includes a valve needle section which connects the armature section and the valve closing element section, the valve needle section having a solid construction. In order to ensure that the fuel flows in the direction of the valve seat, at least two axial grooves are provided in the armature section. The axial grooves in the armature section are constructed in such a way that the emerging fuel can flow along the outer circumference of the valve needle section in the direction of the valve seat. The valve needle is particularly suitable for injection valves in fuel injection systems of mixture-compression, spark-ignition internal combustion engines.

대표청구항 ▼

A valve needle for an electromagnetically actuated injection valve for a fuel injection system of an internal combustion engine, the injection valve having a core element and a fixed valve seat, the core element being at least partially surrounded by a magnetic coil, the valve needle comprising: an

A valve needle for an electromagnetically actuated injection valve for a fuel injection system of an internal combustion engine, the injection valve having a core element and a fixed valve seat, the core element being at least partially surrounded by a magnetic coil, the valve needle comprising: an armature section having at least two axially extending flow channels inside the armature section and a central inner recess area, wherein an upstream end face of a valve needle section lies in an axial extension area of the armature section, the upstream end face forming a boundary of said central inner recess area facing a valve closing element section and wherein the armature section includes at least two axial grooves directly connected in the armature section to the inner recess; wherein the valve closing element section cooperates with the fixed valve seat; and wherein the valve needle section connects the armature section to the valve closing section, the valve needle section having a solid construction, at least one surface of the valve needle section forming a boundary for the at least two axially extending flow channels.