Exhaust gas after-treatment device and internal combustion engine

An internal combustion engine, comprising:

• an exhaust gas after-treatment device, including:
• a catalytic converter system, which includes a delivery side and a discharge side;
• and
• a container including an interior space, at least two openings, and a container top, the at least two openings including a first opening and a second opening, the catalytic converter system being arranged in the interior space of the container, the first opening being connected with the catalytic converter system on the delivery side, and the second opening being connected to the catalytic converter system on the discharge side, the first opening and the second opening being positioned at the container top;
• and
• an exhaust gas outlet which is fluidically connected to the first opening of the exhaust gas after-treatment device.