Desempenho de um trator agrícola de pneus, funcionando com misturas de óleo diesel e óleo de soja reutilizado

Abstract

Performance of an agricultural tire tractor working with mixtures of diesel oil and reused soybean oilIn Brazil, biomass has been the most attractive form of alternative energy, and, more recently, residue and fresh vegetable oils. Therefore, the objective of this study was to evaluate the performance of the power take-off of an agricultural tire tractor with the mixtures of Diesel oil (DO) with reused soybean oil (RSO). First, it was evaluated the density of the mixtures, the Diesel oil temperature behavior in the system of engine fuel feeding and viscosity of the mixtures. Dynamometric assays were carried out to evaluate the performance of the engine fed with the mixtures DO + RSO at different ratios. The results showed that the density and viscosity of the mixtures varied with the increase in the amount of oil of reused soybean (RSO) and with the variation in the temperature; the mixture 25% DO with 75% RSO provided the greatest power take-off compared with the other mixtures; and the specific consumption and torque increased with increasing percentages of RSO added to the mixtures.

Energy Performance in Disc Harrowing Operation in Different Gradients and Gauges

“…EOT and EGT were not significantly affected by these two variables. However, Siqueira et al (2011) have shown that engine performance can be improved by heating the oil to reduce viscosity and improve engine lubrication, which corroborates the present results and the study by Reis et al (2013), who evaluated the performance and emissions of a diesel-cycle engine generator and found that gas temperature was useful for assessing combustion efficiency. Furthermore, Castellanelli et al (2008) observed that the power requirement increased as the engine load and EGT increased.…”

“…The returning fraction absorbs heat as it passes through the engine and reaches the tank with a temperature higher than that of the outlet. Siqueira et al (2011) assessed the use of diesel and vegetable oil in diesel engines and found that the temperature of the fuel supply system varied depending on the required traction, tractor PTO, and engine type.…”