Fuel injection device for internal combustion engine has control chamber associated with at least one valve element and connected to high-pressure source via connection with choke point

摘要

The device has a fuel injection valve with a first hollow valve element (28) controlling a first injection opening, a second valve element (128) movable in the first for controlling at least one second opening and a pressure chamber (40) connected to a cyclical high-pressure source (10,22). At least one valve element has an associated control piston (62) bounding a control chamber (50) that exerts a closing force on the element. The control chamber is connected to the high-pressure source via a connection with a choke point (56).