Method for operating an internal combustion engine

A method for operating an internal combustion engine, comprising:

• ascertaining a base controlled variable for influencing an actual value of an operating variable of the internal combustion engine;
• comparing the actual value of the operating variable to a setpoint value of the operating variable;
• ascertaining a correcting variable as a function of the comparing;
• ascertaining a controlled variable as a function of the base controlled variable and as a function of the correcting variable;
• ascertaining an actual value of a state variable of the internal combustion engine;
• and
• ascertaining a start point in time of a time interval of a critical state change of the internal combustion engine as a function of the ascertained actual value of the state variable, wherein the controlled variable is ascertained from an intermediate controlled variable and a correcting variable following the start point in time.

A computer program for a digital arithmetic unit which is suitable to carry out a method for operating an internal combustion engine, comprising:

• ascertaining a base controlled variable for influencing an actual value of an operating variable of the internal combustion engine;
• comparing the actual value of the operating variable to a setpoint value of the operating variable;
• ascertaining a correcting variable as a function of the comparing;
• ascertaining a controlled variable as a function of the base controlled variable and as a function of the correcting variable;
• ascertaining an actual value of a state variable of the internal combustion engine;
• and
• ascertaining a start point in time of a time interval of a critical state change of the internal combustion engine as a function of the ascertained actual value of the state variable, wherein the controlled variable is ascertained from an intermediate controlled variable and a correcting variable following the start point in time.

A control unit for an internal combustion engine, comprising:

• a digital arithmetic unit on which a computer program is executable, the computer program being suitable to carry out a method for operating an internal combustion engine, comprising:
• ascertaining a base controlled variable for influencing an actual value of an operating variable of the internal combustion engine;
• comparing the actual value of the operating variable to a setpoint value of the operating variable;
• ascertaining a correcting variable as a function of the comparing;
• ascertaining a controlled variable as a function of the base controlled variable and as a function of the correcting variable;
• ascertaining an actual value of a state variable of the internal combustion engine;
• and
• ascertaining a start point in time of a time interval of a critical state change of the internal combustion engine as a function of the ascertained actual value of the state variable, wherein the controlled variable is ascertained from an intermediate controlled variable and a correcting variable following the start point in time.

A storage medium for a control unit of an internal combustion engine, on which a computer program is stored, the computer program being for a digital arithmetic unit which is suitable to carry out a method for operating the internal combustion engine, the method comprising:

• ascertaining a base controlled variable for influencing an actual value of an operating variable of the internal combustion engine;
• comparing the actual value of the operating variable to a setpoint value of the operating variable;
• ascertaining a correcting variable as a function of the comparing;
• ascertaining a controlled variable as a function of the base controlled variable and as a function of the correcting variable;
• ascertaining an actual value of a state variable of the internal combustion engine;
• and
• ascertaining a start point in time of a time interval of a critical state change of the internal combustion engine as a function of the ascertained actual value of the state variable, wherein the controlled variable is ascertained from an intermediate controlled variable and a correcting variable following the start point in time.