Fuel injection valve for e.g. self-ignition diesel engine, has energy storage designed, such that it causes admission of inner valve needle toward seats, and control chamber serving for admission of inner needle against direction of seats

摘要

The valve has an outer valve needle (3), and an inner valve needle (4) arranged in the outer valve needle, where the inner needle works together with valve seats and controls an injection opening. An energy storage (9) is arranged in one of four pressure control chambers (5-7), which is provided for admission of the outer needle toward the seats. Another energy storage (13) is designed, such that it causes the admission of the inner needle toward the seats. The pressure control chamber (6) serves for the force admission of the inner needle against the direction of the seats.