Method and apparatus for the regulation of a pressure value of a combustion engine

The regulation method has a setting value for regulation of the rail pressure obtained by comparing the actual rail pressure (P) with the required rail pressure (S) and used for adjusting a setting element controlling the feed quantity of a high pressure pump (125). A correction value is for the setting value is provided in a given operating condition via a differential element (260) receiving an engine operating parameter, e.g. the engine revs. An Independent claim for a rail pressure regulation device for an IC engine is also included.