Fuel injection valve

摘要

A fuel injector (1) for the direct injection of fuel into the combustion chamber of an internal combustion engine includes a valve needle (4) situated in a nozzle body (3), the valve needle (4) being actuable by an actuator (7) and acted upon by a restoring spring (9) in such a manner that a valve-closure member (5) which is in operative connection to the valve needle (4) and faces the combustion chamber is kept in sealing contact to a valve-seat surface (6) in the non-actuated state of the actuator (7). A first jet-opening angle alpha1 is assigned to a first lift state of the valve needle (4) and a second jet-opening angle alpha2 to a second lift state of the valve needle (4).