Análise dos Benefícios em Consumo de Combustível ao Transformar um Veículo em Híbrido 48V-Flex através de Simulação de Ciclos de Normas Brasileiras

Abstract

Research on 48-volt hybrid vehicles have been conducted throughout the last years, however the benefits of such vehicles in the Brazilian market, that is, assess energetic efficiency based on the Brazilian homologation drive cycles (FTP75 and HWFET) and the implications of ethanol in a hybrid powertrain have not been studied deeply. Given the context above, the present paper investigates the improvement in terms of fuel consumption (energetic efficiency) of a 48-volt hybridization of a vehicle with a turbo direct injected engine under several hybrid topologies: P0, P2, P3 and P4. In addition, this work is focused on the impact of the usage of ethanol in these vehicles running the Brazilian homologation drive cycles. 1-Dimensional numerical simulation using GT-Suite was chosen as the methodology for this study. Fuel consumption results through the energy consumption minimization strategy (ECMS) were obtained for the respective topologies and for 2 types of fuels, E22 and E100. A brief analysis of the energetic efficiency benefits was done to compare homologation drive cycle results from Europe and Brazil.