Desempenho e consumo de misturas de biodiesel em um motor de trator agrícola com injeção eletrônica de combustível e EGR

Abstract

Biodiesel is a fuel produced by the transesterification process through renewable sources of vegetable oils and animal fats. The use of biodiesel is growing in the country due to the lower levels of pollutants emitted into the atmosphere compared to diesel oil, as well as its availability. Because of this, the present work aims to evaluate the performance and consumption of the engine by changing the crankshaft position sensor in 0, 1.25 and 2.5°, in face of variations in the mixtures of Diesel oil with biodiesel. In total, 7 blends were tested (B12, B15, B18, B21, B24, B27 and B30) in which the numbers represent the fraction of biodiesel in volume. Dynamometric tests were carried out on an agricultural engine (Massey Ferguson model MF 6711 in cabin – year 2018), the sensor in the 0° position (original), in general, had better results regarding the variables power, torque, hourly consumption and specific consumption. The B15 fuel presented higher values for torque and power, for the 0° and 1.25° positions, and the B18 in the 2.5° position. It was observed when using the B12 mixture, the lowest hourly and specific consumption in a large part of the tested speed range.