Análise de consumo de combustível e de óleo lubrificante de um conjunto trator-semeadora-adubadora em plantio direto.

Abstract

This work aimed to analyze the fuel and oil consumption of a tractor-seeder-fertilizer under a no-till system of soy, in the areas of Dourados city, Brazil. The influence of the displacement speed (4.4, 5.3 and 6.4 km h-1), of the depth of soil cutting (58 and 62 mm) and of type of furrow opening mechanism (furrow plough and double wheel) were evaluated. The experiment was made as split-splot design, where units had the mechanisms of furrow opening, subunits were the displacement speeds and the depths of soil cutting, with three replicate, in randomly design. The furrow plough mechanism demanded larger specific consumption of fuel and larger consumption oil. The depth of soil cutting did not influence the consumption of lubricating oil. The specific consumption of fuel was increased as the depth of soil cutting increased, while the furrow plough mechanism was used. The specific consumption of fuel and the consumption of lubricating oil were increased as the displacement speed of the machine increased, independently of the furrow opening mechanism used.