Fuel injector, particularly common rail injector for injecting fuel into combustion chamber of internal-combustion engine, comprises injection valve element, which is adjustable between closing position and opening position

摘要

The fuel injector (1) comprises injection valve element (9), which is adjustable between a closing position and an opening position releasing a nozzle hole arrangement (23). The injection valve element is assigned to a control valve (14), which has a control valve element (13) adjustable between a closing position and an opening position by an actuator (15). The control valve in an open position releases a fuel flow from a control chamber (21) limited by the injection valve element to an average volume (22).