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Chemical kinetic mechanisms are used in computer simulations of the combustion process to develop new fuels and to improve the efficiency of engines and burners, in order to describe the chemical processes that occur during the simulation advances in the development of new mechanisms end up generating mechanisms with very high precision but with a higher computational cost. The chemical kinetics reduction process purpose to decrease the computational costs of the simulations without having a major impact on the accuracy of the simulations. This review aims to present the different methods used to reduce chemical kinetics mechanisms.

The turbocharger has unleashed a new era of highly efficient internal combustion engines and shows the right technology to meet global emissions laws. With a simple concept, the turbocharger can reduce the specific fuel consumption, increase engine power and torque by increasing its volumetric efficiency. By using the energy contained in the exhaust gases, the turbocharger compresses the atmospheric air, increasing its density, so that at the moment of combustion there is a more efficient burning of the fuel injected. The purpose of this paper is to analyze the internal components of the turbocharger and a computer simulation made in Ricardo Software's Waves to analyze differences in fuel consumption, volumetric efficiency, torque and in the power of a turbocharged engine compared to the same engine, but without the turbocharger installed.