Method for operating a supercharged internal combustion engine

摘要

In a method for operating a supercharged internal combustion engine, the exhaust gas turbine of which is equipped with a variable turbine geometry, if the pressure upstream of the compressor is higher than the pressure downstream of the compressor in the lower load/speed of the internal combustion engine, the variable turbine geometry is adjusted in the direction of its back-up position until the turbine efficiency is at least approximately in the region of the optimum efficiency.