Control for an injection system

The invention relates to a control system for a fuel injection system, which has multiple fuel injectors (11, 12, ...Ii), with a map-based control unit (5), which generates a control value for controlling a fuel injector from a desired injection value based on a predetermined map, with a determination unit (6), which determines the actual injection value for at least one injection performed with the fuel injector, and with an adaptation unit (7), which uses the results of the determination unit in order to adjust the control of the fuel injectors. According to the invention, the adaptation unit determines at least one adaptation value for the injector control from the at least one actual injection value, wherein the adaptation unit receives, during engine operation, the control values generated by the map-based control unit as input and generates adjusted control values as output by applying a first mathematical function to the control values generated by the map-based control unit, wherein the at least one adaptation value enters as a parameter into the first mathematical function.