METHOD AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE

摘要

During the operation of an internal combustion engine, a check is made whether the internal combustion engine functions in an error-free manner in relation to the engine noise (ER). If the internal combustion engine does not function in an error-free manner in relation to the engine noise (ER), a current value of a cylinder-specific fuel quantity in a cylinder (Z1-Z4) of the internal combustion engine is determined. A check is made whether a current injected cylinder-specific fuel quantity in one of the cylinders (Z1-Z4) is too low or too high to check (CHECK) the relevant cylinder (Z1-Z4) with respect to a cylinder-specific motor speed N_CYL, by comparing a current value (MF_CYL_ AV) of the cylinder-specific injection quantity in the relevant cylinder (Z1-Z4) with a stored reference value (MF_CYL_REF) of the cylinder-specific injection quantity of the relevant cylinder (Z1-Z4) at the current operating point of the internal combustion engine. A check (CHECK) with respect to the cylinder-specific motor speeds (N_CYL) of one of the cylinders (Z1-Z4) is deactivated (DEACT), if the current injected cylinder-specific fuel quantity in the relevant cylinder (Z1-Z4) is too low or too high to check (CHECK) the relevant cylinder (Z1-Z4) with respect to the cylinder-specific motor speed N_CYL.