Valve arrangement for controlling lifting movements and positions of nozzle needle in fuel injector, has compression spring with spring brackets that are arranged within circular-cylindrical surface and extended in circumferential direction

摘要

The arrangement has a valve bolt (11) tensioned by a compression spring i.e. circular-cylindrical compression spring, in a closed position on a seat at an outlet opening of a control chamber (10). A plunger is movably guided in a sleeve (8) that is tensioned by the spring against a base of the chamber in a sealing manner. The spring includes spring legs and spring brackets that are arranged within a circular-cylindrical surface coaxial to a plunger axis and extended in a circumferential direction.