Desempenho energético de um trator 4x3 TDA em operação de escarificação, em função da marcha de trabalho, tipo de ponteira e espaçamento entre hastes

Abstract

Soil preparation operations require greater attention to the machines, with greater fuel consumption and wheel spin, as they are variable in soil conditions. This context and metric operations of scarified higher efficient, aiming the collection survey with the performance of energetic model in the time of speeded, in front of speed, in time between speed and interval between stems. The work was carried out in an experimental area of the Agricultural Machinery Accident Investigation Laboratory (LIMA) belonging to the Federal University of Ceará, Pici campus, Fortaleza, CE. To prepare the soil, use a tractor-scarified set. The experimental design was in a completely randomized block design, with a 2 x 2 x 3 factorial scheme, two working gears (M1 – 3,0 km h-1 at 2000 rpm, M2 – 6,0 km h-1 at 2,200 rpm), two P1 - winged, P2 - narrow) and three spaces between stems (E1 - 0,30 m; E2 - 0,40 m; E3 - 0,50 m). Energy performance was evaluated by means of slippage, fuel hourly and specific consumption, speed, force, power, mobile area, elevation area, soil blistering and specific resistance by area. The data were submitted to a descriptive statistic, by means of the coefficient of symmetry and kurtosis for the normality of the data. Verification of normality, date and time of analysis of variance at the significance level of 5% and when we apply the Tukey test to 5% probability of comparison of means. The variables of the front and rear wheels were defined as being evaluated for gait and space between the stems. However, the difference between the tip type and the spacing for the slippage The speed of work was affected by the interaction between the tip type and the spacing. The force and the power in the bar were influenced by the gait and type of tip. The area mobilized and the specific resistance per area is mobilized by the work between the gears. He concluded that the hourly and specific consumption were influenced by gait and spindle spacing. The average force and the bar power were influenced by the gait and type of tip. The mobilized area and the pumping of the soil also suffered the reflections of the factors.