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There is a clear concern about air pollution on the planet. Measures to reduce CO2 emissions in the Earth's atmosphere were taken to minimize the possibility of global warming. In the context, many countries have created laws and incentive programs that encourage an automotive industry to develop innovative technologies to increase the energy efficiency of their vehicles, thereby reducing fuel consumption and consequently reducing CO2 emissions. Often technologies are applied in combination so that there is an increase in energy efficiency of the vehicle. The objective of this work is to present an experimental evaluation of the energy consumption and reduction of CO2 with a combined application of the Stop & Start measures and mechanical decoupling of the alternator. The new alternator with mechanical and consequent electrical decoupling, consists of a pulley integrated to an electromagnetic clutch.

The automotive industry has played an important role in the international purpose of containing carbon dioxide emissions to mitigate the negative effects of the greenhouse effect. International agreements and treaties promoted legislation that set targets for CO2 emissions and also for the energy consumption of motor vehicles. Several technologies have been implemented and are being developed to increase the energy efficiency of the vehicles and consequently reduce the fuel consumption which is a direct relation with the emission of CO2. This research aimed at the experimental analysis of an alternator equipped with a mechanical decoupling system of the crank shaft of the internal combustion engine. This new system consists of an integrated pulley to an electromagnetic clutch. It is a technological innovation and unprecedented in terms of control of the generation and use of electric energy.

There is a worldwide race to adopt measures that are efficient in reducing carbon dioxide (CO2) emissions into the planet's atmosphere and consequently minimize the possibility of global warming. In this regard, several countries have adopted laws and programs that encourage the automotive industry to apply advanced and innovative technologies to increase the vehicles energy efficiency. In many cases the adoption of more than one technology does not mean that the result of energy efficiency is the simple sum of the effects of each one of them. Therefore, the relevance of analyzing the interactivity between technologies is justified. The objective of this work is to present the experimental evaluation of the comparison of energy consumption and CO2 reduction with the combined application of Start & Stop and Intelligent Alternator.