Abstract: A device is provided for regulating a combustion engine whose operation is governed by a set of parameters P.sub.i (1.ltoreq.i.ltoreq.n), including essentially an assembly of "m" regulation loops for regulating "m" parameters (with m.ltoreq.n), a set of "q" sensors (with q=n-m) for measuring the parameters which are possibly not regulated and a regulator common to the assembly of these "m" loops, for providing, from the different references and the values detected by the different sensors, a signal controlling the different actuators so as to ensure the evolution of each of the regulated parameters, in connection with the evolution of all or part of the other parameters, regulatable or not, regulated or not and for maintaining the engine at all times in a condition of optimum operation.