2015
IMAACA 2015 Proceeding
Hybridization effect on fuel consumption and optimal sizing of components for HEV
Authors: Mauro G. Carignano, Norberto M. Nigro, Sergio Junco
Abstract
Reductions of fuel consumption and gas emissions count among the main advantages of hybrid electric vehicles (HEV). It is well known that the level of hybridization has a large influence on the fuel consumption. On the other hand, the cost of manufacturing HEV increases since at least two power sources are required. Therefore, a proper selection of the hybridization factor (HF) could be the result of a tradeoff between fuel consumption and cost. This paper shows how HF affects fuel consumption of a HEV. The work was realized using Series and Parallel architectures, with an internal combustion engine and electrochemical batteries as thermal machine and storage system respectively. Simulations with different HF are evaluated using urban and road driving profiles. In order to achieve optimal power split, dynamic programming was applied. The results show that there exists an optimal HF which generates the minimum fuel consumption for each architecture. According that, the optimal size of components are found for each case analyzed.
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