Patent ID: 7835849
Filing Date: 2010-11-16
Classification: F02D,H05B

Abstract:
1. A method for operating an internal combustion engine with at least one cylinder with a combustion chamber, an injection valve which is designed for metering fuel, with a lambda controller being provided in which: a respective lambda adaptation value (LAM_AD) assigned to a respective temperature range is adapted as a function of at least one corrective signal proportion (SGA) of the lambda controller in relation to a control parameter (LAM_RP) of the lambda controller if a respective predetermined condition is fulfilled, which requires that a quasi-stationary operating state is present and the respective temperature range is adopted, with the respective lambda adaptation value (LAM_AD) being assigned to a respective reference temperature in the respective temperature range, a fuel mass (MFF) m to be metered is determined as a function of at least one operating variable (BG) of the internal combustion engine, the fuel mass (MFF) to be metered is corrected as a function of the respective lambda adaptation value (LAM_AD) assigned to the current temperature, and if a predetermined test condition (P_COND) is fulfilled: