Method for controlling an exhaust-gas turbocharger with a variable turbine geometry

A method for controlling an exhaust-gas turbocharger with variable turbine geometry in an internal combustion engine is presented. The turbocharger comprises a turbine in communication with an exhaust-gas manifold of the engine; a compressor connected to the turbine and in communication with an air intake manifold of the engine; and a governing mechanism upstream of the turbine that can be adjusted for varying the flow cross-section of exhaust-gas onto the turbine, the governing mechanism being sensitive to a control signal generated by a control unit for adjusting the governing mechanism. In case an acceleration condition of the engine is detected, a limitation on the flow area defined by the governing mechanism is imposed in such a way that said flow area cannot be inferior to a limit flow area, which depends on a parameter representative of the gas flow rate through the turbine.