Avaliação experimental da sensibilidade do biodiesel B5 em motores diesel utilizado em frotas de ônibus urbano e interurbano

Abstract

he study aims to investigate the successful way of the biodiesel fuel used in the engines of urban and intercity bus companies. It was necessary to investigate and analyze, technologically, if the using biodiesel fuel presents problems relative to wear of parts directly involved with fuel and also to observe consumption fluctuations of this fuel. Fossil diesel fuel and B5 biodiesel blends were analytically analyzed, including relative to sulfur content. Two urban and intercity bus companies, had 41 and 13 vehicles, respectively, which were investigated in this work. It was analyzed 2008 until 2010 and were interviewed the management of the maintenance team of bus companies relative to aspects concerning to substitution of the diesel fuel by the B5 biodiesel. According to consumption evaluation, there was a nonlinear boost (≈ 5 %) in the consumption of fuel when diesel was changed to B5 biodiesel blend, but it not was observed any additional maintenance related to use of this last fuel. This was rewarded by the emission reductions of chemical compound nitrogen dioxide and sulfur content, as measured by Fernandes (2011). Also, the functionality and residual life in service of the buses using diesel blends are discussed