Method for detecting tuning measures on an internal combustion engine, computer program product, and control unit

A method for detecting a tuning measure on an internal combustion engine, the method comprising the following steps:

• recording or ascertaining a first actual curve of a first quantity, depending on a reference quantity;
• recording or ascertaining a second actual curve of at least one second quantity, depending on the reference quantity;
• providing a first target curve of the first quantity, depending on the reference quantity;
• providing a second target curve of the at least one second quantity, depending on the reference quantity;
• and
• inferring a tuning measure influencing the reference quantity when both the first actual curve deviates from the first target curve and the second actual curve deviates from the second target curve.

A non-transitory computer readable medium on which is stored a computer program product including commands for detecting a tuning measure on an internal combustion engine, the commands, when executed by a computer, causing the computer to perform the following steps:

• recording or ascertaining a first actual curve of a first quantity, depending on a reference quantity;
• recording or ascertaining a second actual curve of at least one second quantity, depending on the reference quantity;
• providing a first target curve of the first quantity, depending on the reference quantity;
• providing a second target curve of the at least one second quantity, depending on the reference quantity;
• and
• inferring a tuning measure influencing the reference quantity when both the first actual curve deviates from the first target curve and the second actual curve deviates from the second target curve.

A control unit for open-loop and/or closed-loop control of an operation of an internal combustion engine, the control unit comprising:

• at least one processor;
• at least one non-transitory memory on which is stored a computer program product including commands for detecting a tuning measure on an internal combustion engine, the commands, when executed by the at least one processor, causing the at least one processor to perform the following steps:
• recording or ascertaining a first actual curve of a first quantity, depending on a reference quantity,
• recording or ascertaining a second actual curve of at least one second quantity, depending on the reference quantity,
• providing a first target curve of the first quantity, depending on the reference quantity,
• providing a second target curve of the at least one second quantity, depending on the reference quantity, and
• inferring a tuning measure influencing the reference quantity when both the first actual curve deviates from the first target curve and the second actual curve deviates from the second target curve.