Method for operating an internal combustion engine, and internal combustion engine

An internal combustion engine, comprising:

• a first group of cylinders;
• a second group of cylinders,
• wherein the first group of cylinders are fluidically coupled to a turbine of an exhaust gas turbocharger via a first exhaust gas line, and the second group of cylinders are fluidically coupled to the turbine of the exhaust gas turbocharger via a second exhaust gas line,
• wherein an exhaust gas recirculation line for recirculating exhaust gas of the internal combustion engine into a feed air tract of the internal combustion engine branches off only from the first exhaust gas line,
• wherein downstream from the turbine, an oxidation catalytic converter and a particle filter, downstream from the oxidation catalytic converter in terms of flow, are situated in an exhaust gas tract of the internal combustion engine, and
• injectors associated with respective cylinders of the internal combustion engine, exhaust valves associated with respective cylinders of the internal combustion engine, and an electronic control unit operably connected to the injectors and the exhaust valves, wherein the electronic control unit is configured to:
• control an injector associated in each case with one cylinder to perform a plurality of fuel injections within a working cycle, control an exhaust valve associated with one cylinder of the internal combustion engine with regard to an opening time and a closing time in such a way that an advance of a closing time of the exhaust valve is carried out in a first temperature range for a temperature of the oxidation catalytic converter, and control at least one injector for carrying out a post-injection of fuel in a second temperature range for the temperature of the oxidation catalytic converter, wherein an upper range limit of the first temperature range has a lower value than an upper range limit of the second temperature range,
• and wherein within the first temperature range, the advance of the closing time of the exhaust valve is reduced as the temperature of the oxidation catalytic converter increases.