Desempenho comparativo de um motor de ciclo diesel utilizando diesel e misturas de biodiesel

Abstract

Brazil is considered a country of an incommensurable biodiversity, justifying in this way, its enormous variety in oleaginous. It is considered that, in a close future, the petroleum reservations economically viable will tend to the shortage. Beside it, the exacerbated current price levels of the petroleum barrel in the international market, the possibility of employment generation and income with the consequent fixation of the man in the country, the excellent and varied climatic conditions and several types of terrain do that the country, with extensive workable areas, stand out in the world scenery if considering its great potentiality on generation of alternative fuels. The environmental preservation, important subject nowadays, does, also, that the human being work in searches for the development of alternative energies, mainly those originating from renewable and biodegradable sources of sustentable character. Being taken in consideration those searches, the purpose of this work was to evaluate the performance of a diesel engine working in different moments with mineral diesel and mixtures of mineral diesel and biodiesel in the equivalent proportions B2 (98% mineral diesel and 2%biodiesel), B5 (95% mineral diesel and 5%biodiesel), B20 (80% mineral diesel and 20%biodiesel), and, finally, B100 (100% biodiesel). The experiment was accomplished in the dependences of the Engineering Department at UFLA - Federal University of Lavras, in Lavras, Minas Gerais, in July, 2005.