Method for operating an internal combustion engine, computing unit, and computer program

A computer (140) configured to control operation of an internal combustion engine (110), by

• controlling delivering of an air-fuel mixture having a first composition for combustion in the internal combustion engine,
• determining (210) a current composition of a combustion exhaust gas produced during the combustion,
• determining (220) an emission collective which comprises a total amount of a component of the combustion exhaust gas emitted over a predefined interval, from a plurality of successively determined current compositions of the combustion exhaust gas, and
• setting (250) a second composition of the air-fuel mixture depending on the emission collective determined.

A non-transitory, computer-readable storage medium containing instructions that when executed by a computer cause the computer to control operation of an internal combustion engine (110), by

• controlling delivering of an air-fuel mixture having a first composition for combustion in the internal combustion engine,
• determining (210) a current composition of a combustion exhaust gas produced during the combustion,
• determining (220) an emission collective which comprises a total amount of a component of the combustion exhaust gas emitted over a predefined interval, from a plurality of successively determined current compositions of the combustion exhaust gas, and
• setting (250) a second composition of the air-fuel mixture depending on the emission collective determined.