OPERATIONAL PERFORMANCE OF AN AGRICULTURAL TRACTOR UNDER DIFFERENT TIRE INFLATION PRESSURES IN THE SUBSOILING OPERATION

Arthur Gabriel Caldas Lopes,Gabriel Pastor De Barros Lima,Gabriela Greice Pereira,Wesley Matheus Cordeiro Fulgêncio Taveira,Isabela Dias De Souza,Tiago Pereira Da Silva Correia

doi:10.32404/rean.v7i4.4878

Arthur Gabriel Caldas Lopes, Gabriel Pastor De Barros Lima + Show 4 more

Open Access

https://doi.org/10.32404/rean.v7i4.4878

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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.

Highlights

The internal tire pressure directly affects the operating performance with an agricultural tractor
This study aimed to evaluate an agricultural tractor's operational performance with different tire inflation pressures in the subsoiling operation
The slippage (P) and advance (A) results are shown in Figure 1 and indicate that the wheels' inflation pressures differed by the variable

Summary

Introduction

The internal tire pressure directly affects the operating performance with an agricultural tractor. According to Misiewicz et al (2015), adequate tire pressure provides dynamic balance to the tractor, higher tractive efficiency, and better contact of the tread with the ground. The authors found in a study performed with inflation pressures in the rear tires of a farm tractor of 96.5, 124, 151, and 179 kPa, as well as a condition of loamy sand soil with 10.35% humidity, that the lowest pressure caused the lowest tension in the soil, demonstrating the relevance of reducing the pressure to decrease soil compaction to depths of 0.30 m. The authors cite that it is necessary to seek solutions to reduce working pressures to cause less superficial soil compaction due to vertical and horizontal tensions

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