Method and device for operating an internal combustion engine with a turbocharger exhaust gas.

Method for operating an internal combustion engine (1) with a turbocharger exhaust gas (5, 10, 15), in which a mass of exhaust gas is calculated on a volume (20) between at least one valve output (25) of the internal combustion engine (1) and a turbine (5) turbocharger exhaust (5, 10, 15), wherein a pressure after and at least one outlet valve is calculated (25 ) from the mass of exhaust gas through the general gas equation, in which the mass of exhaust gas is calculated by integrating the difference between the mass flow exhaust gas which flows from at least one outlet valve (25) to the volume (20) and the mass flow of exhaust gas exiting from the volume (20), wherein the mass flow of exhaust gas exiting from the volume (20) forming at least through the mass flow exhaust gas exiting from the turbine (5), characterized in that l a mass flow of exhaust exiting from the volume (20) is also shaped through a mass flow exhaust gas which exits through a return channel exhaust (200).