Melhoria da eficiência energética automotiva aplicando o sistema Start&Stop e estratégias de operação do alternador

Abstract

With the formidable growth of the automotive industry, also came the concern with the rise of greenhouse gas emissions and the importance of this sector to develop innovative technologies to increase energy efficiency, reducing fuel consumption and consequently mitigating CO2 emissions. This research aimed at the experimental analysis of the energy consumption and CO2 reduction comparison applying Stop & Start system and alternator operations strategies. One of these alternator operational strategies is based on its mechanical and electrical coupling and decoupling due to a pulley integrated to an electromagnetic clutch in certain predetermined circumstances. This operation was elaborated from the conventional strategy that contemplates only the electrical decoupling, known as "smart alternator". The tests were performed on a vehicle in the urban and highway cycles (FTP75 + HW) in order to evaluate its operational characteristics, as well as obtaining the energy consumption of each configuration. Compared to the baseline configuration, the results presented energy consumption reductions of 2.38% and 3.56%, using separately the Start & Stop system and alternator operating strategies, respectively, and reduction of 4.91% when combined.