Internal combustion engine equipped with waste gate turbines and method to operate such an engine

The supercharged internal combustion engine (1) comprises a blocking element (12) which is arranged at a nodal point (11). The blocking element is adjusted between an open position and a closed position, where a turbine (9a) is provided with a bypass line (10b). An overflow channel is arranged in the closed position of the blocking element. An independent claim is also included for a method for operating a supercharged internal combustion engine.