Fuel injector valve for combustion engines

The fuel injection valve has housing (1), where a piston-shaped valve needle (20) is arranged in longitudinally movable manner. A valve sealing surface is formed at the valve needle. The valve needle with a valve seat acts together for opening and closing an injection opening. The valve needle has two piston-shaped valve needle units (120,220), where former valve needle unit limits a control chamber (30) and latter valve needle portion has the valve sealing surface.