Patent ID: 9624861
Date: 2017-04-18
CPC Classifications: F02D

Claim:
1. A method for operating an internal combustion engine of a motor vehicle having a mixture pilot control which determines at least one composition of an air-fuel mixture required for a predetermined target air-fuel mixture ratio and a lambda control with at least one lambda probe arranged in the exhaust gas flow of the internal combustion engine, comprising the acts of: determining the at least one composition of the air-fuel mixture required for the predetermined target air-fuel mixture ratio by the mixture pilot control; determining from at least one of a load on, a rotational speed of, and a temperature of, the internal combustion engine a first operating-parameter-dependent correction factor for the at least one composition of the air-fuel mixture determined by the mixture pilot control; determining from a vehicle operating parameter other than the load on, the rotational speed of, or the temperature of, the internal combustion engine a second operating-parameter-dependent correction factor for the at least one composition of the air-fuel mixture determined by the mixture pilot control; determining a corrected air-fuel mixture by adjusting the at least one composition of the air-fuel mixture required for the predetermined target air-fuel mixture ratio by the mixture pilot control by the first and second operating-parameter-dependent correction factors; and controlling a fuel injection quantity by the mixture pilot control in accordance with the corrected air-fuel mixture.