Turbocharging is a process that involves the compression of all or part of the fresh air before it is delivered to the cylinder, which increases the air pressure at the cylinder inlet. The purpose of the process is to increase engine power. As part of the thesis, it was necessary to carry out simulations for three variants of the given engine in the Lotus program. The engine is similar to the BMW N57D30 engine. Engine models were made and the characteristics of the compressor and turbine were adjusted to match the turbocharger available on the market and to achieve the target characteristics of the engine. The variant of the engine with atmospheric intake is described in the fourth chapter, while simulations with one and two turbochargers are described in the fifth chapter. By installing a turbocharger, the power and performance of the engine can be greatly increased, which was the task of this thesis. In the sixth chapter, the results obtained by conducting simulations of the given engine are presented, and the highest obtained power was achieved using two turbochargers.