USE OF REFINED SOYBEAN OIL IN DIESEL ENGINES LOW POWER

Abstract

The objective of this study was to assess the feasibility of using the Refined Soybean Oil (SAB) in diesel engines of low power. The work was conducted in Laboratory of Agricultural Mechanization of the Federal University of Viçosa. For the representation of the yield curves of the engine, the data were statistically analyzed with SAS software and the equations generated were tested using T and F, and the depiction of the yield curves was used for regression analysis. The characteristics examined were: kinematic viscosity of the mixtures in different proportions of SAB and diesel oil with a Saybolt Universal viscometer; yields were performed on a model NSB75 Yanmar engine, with rated power of 5.5 bhp at 1800 rpm, and cylinder direct injection, and the fuel used for testing mixtures of ORS and diesel in the proportions of 0, 2, 10, 20, 30, 40, and 50%. It was found that heating is a viable technique for reducing the viscosity and to meet ANP 310, the proportions have to be small and should be heated, and heating is more efficient in larger proportions of SAB. It was found increased power and torque due to the increase in the proportion of SAB, with respect to the specific consumption were not found significant differences. For the cost it was concluded that for $ kW-1h-1, there were no significant differences. We conclude that the use of vegetable oil to be viable, so technical and other studies should be conducted to assess the engine working conditions for long periods, to assess the conditions of wear and maintenance.