Method of correction of torque jerks of an internal combustion engine

Method for correcting jerks (uneven) in a fuel-injected internal combustion engine (1) of the type incorporating an electronic engine management system (7) which, on the basis of predetermined strategies and on the basis of values taken by the characteristic parameters (N,Pcoll,Rp) of the operation of the engine (1) determines the values of the control parameters (Av,Ti) which control the operation of the engine, by means of which at least one control parameter (Av) is corrected in response to fluctuations in the engine torque, using the following steps: - estimating the instantaneous value of the fluctuations in the engine torque by filtering the rotational speed (N) of the driveshaft; - determining the correction (CorrAv) to be applied to the said control parameter (Av) by application of a variable multiplying gain (G) to the said instantaneous value of the fluctuations in the torque, characterised in that the step for estimating the instanteous value of the fluctuations in the engine torque includes the following operations: - calculating the mean rotational speed (N) by filtering the instantaneous rotational speed (N); - calculating the difference between the instantaneous rotational speed (N) and the mean rotational speed (N); - calculating the mean difference (N-N) between the instantaneous rotational speed (N) and the mean rotational speed (N) by filtering the difference (N-N) between the instantaneous rotational speed (N) and the mean rotational speed (N); - calculating the difference between, on the one hand, the mean difference (N-N) between the instantaneous rotational speed (N) and the mean rotational speed (N) and, on the other hand, the difference (N-N) between the instantaneous rotational speed (N) and the mean rotational speed (N). Procédé de correction des à-coups de couple d'un moteur à combustion interne (1) à injection de carburant du type comportant un système électronique de contrôle moteur (7) déterminant d'après des stratégies prédéterminées et à partir des valeurs prises par les paramètres caractéristiques (N,Pcoll,Rp) du fonctionnement moteur (1), les valeurs des paramètres de contrôle (Av,Ti) qui commandent le fonctionnement du moteur, par lequel au moins un paramètre de contrôle (Av) est corrigé en réponse aux oscillations du couple moteur, en utilisant les étapes suivantes : estimation de la valeur instantanée des oscillations du couple moteur par filtrage du régime de rotation (N) de l'arbre moteur ; détermination de la correc