Internal combustion engine with controlled supercharging and method for controlling the supercharging

The engine has two bypass valves mounted in respective corresponding bypass branches and controlled by respective bypass valve regulators (39, 40). A tilting block (54) is provided to select one bypass valve for controlling inlet gas pressure, according to operation parameters of an engine. One of the branches is provided on a compressor and the other branch is provided on a turbine. An independent claim is also included for a method for controlling boost pressure of inlet gas provided to an internal combustion engine.