Injector for injecting fuel into combustion chamber of internal-combustion engine, particularly common-rail injector, has control chamber actively connected with servo valve, by which fuel discharge path is released or blocked

摘要

The injector has a high pressure connector (2,3) and an actuator control valve with a control fluid-discharge path (18) from a control chamber (20). The control chamber is actively connected with a servo valve (31), by which a fuel discharge path (26) is released or blocked from another control chamber (28), which is supplied with fuel from second high pressure connection. The latter control chamber is actively connected with a needle (7).