Efeito da temperatura dos gases de escape no desempenho de um trator agrícola

Abstract

Evaluating the performance of agricultural tractors subjected to different loads to the drawbar has been the subject of recent research, being the type of equipment to determine the available force in the drawbar one of the most relevant factors. The objective of this work was to determine the relation between the exhaust temperature of the engine of an agricultural tractor and the parameters of performance of the same tractor, equipped with radial and diagonal tires. An experiment was set up using the randomized block design, in the subdivided parcel scheme. The plots were composed of two types of tires (radial and diagonal), and the subplots were composed of six different forces to which the tractor was subjected in the traction bar (1,4, 3,4, 10,4, 15,2 ; 20.7 and 23.8 kN), with three replicates per treatment. To measure the temperature a portable combustion analyzer was used; for the force, a load cell; for fuel consumption, a flowmeter and for skating, magnetic sensors. The other variables were calculated from the data collected. The parameters evaluated were independent of the tire type. The modeling of the drawbar force from the exhaust gas temperature has shown that it is possible to use a temperature sensor and a data recording system to estimate the performance parameters of an agricultural tractor.