Patent ID: 6725826
Filing Date: 2004-04-27
Classification: F02D

Abstract:
A method for compensating for faulty adaptations of the pilot control of fuel metering for an internal combustion engine operated in at least two different operating modes including a homogeneous mode and a stratified charge mode, comprising the steps of:performing a mixture regulation and an adaptation of mixture regulation in the homogeneous mode; switching between the operating modes depending on a desired operating mode determined from a plurality of operating mode requirements; assigning a priority to each of the operating mode requirements; determining the desired operating mode depending on the priorities of the operating mode requirements; switching to the homogeneous mode with an activation of a temperature-dependent adaptation momentarily occurring even outside normal starting conditions of a range-dependent adaptation; evaluating a deviation of a temperature-dependent adaptation quantity from a neutral value during a short-time activation as a suspected error; and raising, by an engine control program, the priority of the adaptation under normal starting conditions when the suspected error is present.