Dynamic Traction of a Mechanized Set Based on Technical and Operational Parameters

Abstract

ABSTRACT:The objective of this study was to evaluate and model the traction performance parameters of a tractor 4x2 FWD, according to the tractor speed, the internal pressure and the type of tires construction. For each type of tire construction was assembled an experiment in which we evaluated the influence of internal pressures of the front and rear tires and the speed of the mechanical assembly. It was found that the sliding of the diagonal run, presented significant effect in all variables analyzed, since the radial showed no influence of the factors evaluated. The power available in the drawbar was higher when the tractor was equipped for radial tires. The response variables, fuel consumption schedule and specific fuel consumption were more sensitive to the speed of the internal tire pressure. The fuel consumption per area worked, did not affect the analyzed variables. As for the effort prediction models in the tractor drawbar, it was only possible for diagonal run, which are influenced by speed and internal pressure levels of the front and rear tires.

Agricultural tractor with different mass distributions between axles

“…Different variables affect the operational performance of the agricultural tractor, including the soil surface condition, type of tire used, total mass of the tractor and its distribution on the wheels, load pulled and travel speed (lEITE et al, 2017). Emphasizing the weight distribution between the front and rear axles, which determines the maximum available traction and the slip level under a given traction load, in view of current studies, maximum performance is obtained with ballast distribution with 40 a 45% of the total static load on the front axle.…”