Injection valve for injecting e.g. diesel fuel, has control valve with closing body that is designed so that throttle is formed between body and recess wall and includes resistance, which provides fluid flow from control chamber to downpipe

摘要

The valve has a control valve (9) arranged between a control chamber (7) of a recess (4) and a fluid down pipe (3). The valve (9) includes a closing body (12) is axially movable in the recess and arranged between the chamber and a control valve seat (14). The body is designed, such that a throttle is formed between the body and a wall of the recess. The throttle has a preset resistance within an open position area, where the throttle resistance provides a fluid flow from the chamber into the downpipe depending on a pressure drop between the chamber and the downpipe.