Method and device for controlling a gasoline engine in auto-ignition operation

摘要

The invention relates to a method for operating an internal combustion engine in HCCl mode, with the following steps: a) recording (S1) a course of a measured variable of a variable in a combustion chamber of a cylinder (3) of the internal combustion engine (2); b) determining (S2) one or more combustion features (SOC, MFB10%, MFB50%, MFB90%, Q10%, Q50%, Q90%) of a combustion in a first combustion cycle based on the measured course of the measured variable; c) Determining (S3), in particular modeling, a first value of a state variable at a specified point in time after the first combustion cycle and before a second subsequent combustion cycle based on the determined one or more determined combustion characteristics (SOC, MFB10%, MFB50%, MFB90% , Q10%, Q50%, Q90%); d) determining (S4) desired setpoint values for one or more combustion features of a combustion in the second subsequent combustion cycle; e) Determining (S5), in particular modeling, a second value of the state variable at the specified point in time based on the setpoint values of the one or more combustion characteristics (SOC, MFB10%, MFB50%, MFB90%, Q10%, Q50%, Q90%) the second combustion cycle; and f) controlling (S8) the internal combustion engine (2) from the specified point in time depending on the first value of the state variable and the second value of the state variable.