Desempenho de tração em campo de um trator equipado com pneu radial de baixa pressão e pneu diagonal.

Abstract

The decreasing of inflation and the radial tires was been a alternative used to minimize the effect of compaction of the agricultural vehicles and to increasing the tractive efficiency. Both factors associated resulted in the low-pressure tires, yet of limited use in the Brazil. In this paper, we compare the tractive performance of a MFWD tractor, equipped with a set of bias tires and a set of low-pressure tires in the rear axle. The tractor was operated in a medium loam soil with vegetation composed by grass and several evil plants, under constant load in the drawbar. The results showed better traction characteristics with the use of radial tires, with which was possible to obtain 7,7% more of travel speed and 28,8% less of wheelslip.