Abstract: A fuel injector (1) for the direct injection of fuel into the combustion chamber of an internal combustion engines includes an actuator (10), a valve needle (3), which is able to be activated by the actuator (10) to actuate a valve-closure member (4), which forms a sealing seat together with a valve-seat surface (6) formed on a valve-seat member (5); and has a plurality of spray-discharge orifices (7) formed in the valve-seat member (5). A groove-type surface structure (34) is formed at an end face (35) of the valve-seat member (5) facing the combustion chamber.

Abstract: The present invention relates to a fuel injector for fuel injection systems of internal combustion engines, including, among others, an actuator (10, 11, 12) and a movable valve part (5, 7) cooperating with a fixed valve-seat (22) that is formed at a valve-seat member (16), to open and close the valve. Positioned downstream from the valve seat (22) is a disk-shaped swirl element (26) which is provided with at least one inlet (27) as well as at least one outlet opening (29), and which includes at least one swirl channel (28) upstream from the outlet opening (29). The swirl element (26) is accommodated in a disk-shaped receiving element (25). Exactly one supply duct (33) formed in the receiving element (25) is directed to each inlet end (34) of a swirl channel (28).