Control valve for a fuel injection valve

Abstract

A control valve for a fuel injection valve, having a valve needle, which is displaceable in a control chamber that is provided with an inlet, an outlet, a valve needle seat, and a throttle seat. Various switching states that make different courses of the opening procedure of the nozzle needle, switched by the control valve, of the fuel injection valve possible. To that end, it is provided that a throttle ring is disposed on the valve needle and is provided with throttle bores, which extend parallel to the longitudinal axis of the valve needle, and that the dimensions of the throttle ring and valve needle are selected such that an outlet conduit is formed between the outer wall of the valve needle and the inner wall of the throttle ring.

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