Injector for injecting fuel at sequential build

The invention relates to an injector for injecting fuel into the combustion chambers of internal combustion engines. The injector comprises actuating devices (39, 58), a retaining body (20) and an additional retaining body (26), which are interconnected by means of clamping elements (47, 53). Fuel under high-pressure impinges on a nozzle chamber (23), which surrounds a nozzle needle (24), by means of a supply bore (46). In the retaining bodies (20, 26), supply connections (40), electrical connection elements (43, 44), the actuating devices (39, 58), a fuel distributor 3/2 way valve (28, 50) integrated into one of the retaining bodies (20, 26), a spring chamber (31) containing a closing element (32), in addition to a nozzle needle (24) are positioned in sequence one behind the other.