Patent ID: 8499623

Claim:
A method for controlling combustion of a spark-ignition internal-combustion engine, wherein at least one signal representative of a state of the combustion is recorded by at least one detector in the engine, and at least one indicator of the combustion at each engine cycle is determined from the signal for each engine cycle comprising: modelling a distribution of N combustion indicator values acquired over N cycles preceding a cycle in progress, by determining coefficients of a theoretical distribution law; repeating the modeling by removing values from among the N combustion indicator values or repeating the modeling for working points of the engine, to obtain an evolution of coefficients; determining at least one parameter representing an evolution of at least one of the coefficients; determining a frequency of abnormal combustions occurring during the N cycles preceding the cycle in progress by comparing the at least one parameter with a threshold; and controlling a course of the abnormal combustion detected in the combustion chamber.