Estudo da relação cinemática entre eixos motrizes na eficiência em tração de um trator agrícola de rodas equipado com dois tipos de pneumáticos.

Abstract

The tractive performance of a front whell assist tractor was evaluated. Radial tires and bias tires were used in two soil conditions (fast and loose). The purpose of this work was verify the traction performance with both tires, changing the statics kinematics relations. The static kinematic relation vary according with treatments, changing inflation pressures. Were measured in the field the slip (front and rear) drawbar pull and rolling resistence. The results indicated static kinematic relation don’t influence traction efficience. The maximum drawbar pull were the same with slip between 10% to 15% in both tires. The traction coefficient of the bias tires were 30% better than radial tires in two surfaces conditions.