PROCEDE DE DIAGNOSTIC ET/OU D'ADAPTATION D'AU MOINS UN SYSTEME D'UN DISPOSITIF

Procédé de diagnostic et/ou d'adaptation d'au moins un système (12, 14) d'un dispositif (10), procédé caractérisé en ce qu'il comprend les étapes suivantes : (a) on modifie au moins une grandeur de réglage (44) d'au moins un système (12, 14) du dispositif (10) par rapport à la valeur actuelle disponible de la grandeur de réglage (44) ; (b) on détermine au moins deux grandeurs d'état (46) d'au moins un système (12, 14) ; (c) en fonction de ces au moins deux grandeurs d'état (46), on décide (61) de la poursuite de l'exécution du procédé. The method involves changing a control variable of systems (12, 14) in relation to an actual present value of the control variable. Two state variables of the systems are determined. A decision for implementation of the systems is made based on the state variables. A change of a diagnostic algorithm is determined based on the state variables. Alternative diagnostic algorithms are selected from a stored stock based on the determined state variables. The control variable comprises one of opening time of an injector and/or fuel pressure. The state variables are selected from one of a group consisting of sensor size, actuator size, offset-value, amplification factor, catalyst temperature and/or an oxygen level of a catalyzer. The control variable is selected from one of a group consisting of a lambda value of exhaust gas, size of an exhaust gas recirculation, firing angle, portion of oxygen, nitrogen, hydrogen, carbon monoxide and/or hydrocarbons in the exhaust gas, dosing rate of additives of the exhaust gas and/or an exhaust gas temperature. Independent claims are also included for the following: (1) a computer program comprising a set of instructions for performing a method for diagnosis and/or adaptation of systems in a motor car (2) a storage medium comprising a set of instructions for performing a method for diagnosis and/or adaptation of systems in a motor car (3) a control and/or regulating device for performing a method for diagnosis and/or adaptation of systems in a motor car.