Operational Performance of an Agricultural Tractor Under Different Tire Inflation Pressures in the Subsoiling Operation

Abstract

For the agricultural tractor's best performance, it must be correctly adapted to the job. Among other factors, the adequacy of tire inflation pressure is one of the most important and may influence the operation's efficiency and productivity. This study aimed to evaluate an agricultural tractor's operational performance with different tire inflation pressures in the subsoiling operation. The study was carried out in an experimental area of the Agricultural Machinery and Mechanization Laboratory of the experimental farm “Água Limpa,” belonging to the University of Brasília. The experimental design used was in randomized blocks with the following values, 206.8 kPa (30 psi), 137.9 kPa (20 psi), and 68.9 kPa (10 psi), of inflation pressure for agricultural tractor tires. The mechanized set used was a tractor model TM7020 2WD MFWD pulling a subsoiler with five shanks, SPCR model, in a Latossolo Vermelho-Amarelo. The higher inflation pressure resulted in greater slippage, advance, hourly fuel consumption, and lower speed and operational field capacity.

Design and Experiment of Oil-Electric Hybrid Air-Suction Sorghum Plot Seeder

“…A curve was then drawn with the average spacing under a time step of 5~9 seconds in the middle period, as shown in Figure 9. It is evident that, in the absence of the seed-stirring device, the distance between the seed and the seed tray is fixed, indicating that the seed is in a static state, and, in the case of the seed-stirring device, the curve fluctuates significantly, indicating that the seed-stirring device can have a disturbing effect on the seeds and avoids their accumulation [37][38][39][40].…”