Fuel injection valve for internal combustion engines

A fuel injection valve for internal combustion engines, having a housing (1) in which a nozzle needle (8) is at least indirectly subjected, by pressure in a control chamber (28), to a closing force in a direction of a valve seat (10), wherein the pressure in the control chamber (28) is adjustable by a control valve (40) by virtue of the control chamber (28) being connectable to a low-pressure chamber (46) via an outflow throttle (31) and the control chamber (28) being configured to be filled with fuel at high pressure via an inflow throttle (30),

• wherein the control chamber (28) has therein a longitudinally movable control piston (29) which divides the control chamber (28) into a first control chamber part (128) and a second control chamber part (228), wherein the first control chamber part (128) is connectable to the low-pressure chamber (46) via the outflow throttle (31), and the control piston having a sealing surface (38) which interacts with a sealing seat (39) in the control chamber (28) such that, when the sealing surface (38) is in contact with the sealing seat (39), the inflow throttle (30) is hydraulically separated from the second control chamber part (228), and wherein the first control chamber part (128) and the second control chamber part (228) are permanently hydraulically connected to one another via a throttled connection (34), and
• wherein the control piston (29) is subjected, by a spring element (33), to an opening force in a direction of the second control chamber part (228) and the spring element (33) is arranged in the second control chamber part (228).