Estimation of tractor wheel slippage with different tire pressures for 4wd and 2wd driving systems

Janulevičius, Algirdas; Juostas, Antanas; Pupinis, Gediminas

doi:10.22616/erdev2019.18.n096

Cited by 5 publications

(3 citation statements)

References 20 publications

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“…The result of less slippage with lower inflation pressure corroborates that verified by Janulevicius et al (2019). They found that slippage was reduced by 11% when the tire pressure was reduced from 240 to 80 kPa when working with different inflation pressures on an agricultural tractor's tires.…”

Section: Resultssupporting

confidence: 82%

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

Lopes

Correia

Lima

et al. 2020

Rev. Agric. Neotrop.

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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.

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Section: Resultssupporting

confidence: 82%

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

Lopes

Correia

Lima

et al. 2020

Rev. Agric. Neotrop.

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show abstract

“…where FC is the fuel consumption of engine (L/min), F in is the flow rate (L/min) measured by flowmeter installed on the fuel input side of the engine, F out is the flow rate (L/min) measured by flowmeter installed on the fuel outlet side of the engine, and SFC is the specific fuel consumption (g/kWh). The travel speed and slip ratio are one of the main parameters that have a great influence on the power requirements of the agricultural tractor [36]. In general, to keep the traction performance constant, the tractor must be able to reach a sufficient travel speed during agricultural operation.…”

Section: Load Measurement Systemmentioning

confidence: 99%

Power Transmission Efficiency Analysis of 42 kW Power Agricultural Tractor According to Tillage Depth during Moldboard Plowing

Kim

Siddique

et al. 2020

Agronomy

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In order to optimize tractor design and optimize efficiency during tillage operation, it is essential to verify the impact through field tests on factors affecting the tractor load. The objectives of this study were to investigate the effect of tillage depth on power transmission efficiency of 42 kW power agricultural tractor during moldboard plowing. A load measurement system and a tillage depth measurement system were configured for field tests. To analyze the effect of tillage depth on power transmission efficiency and fuel consumption, the data measured in the three-repeated field test were classified according to tillage depth. As the tillage depth increased from 11 cm at the top of the hardpan to 23 cm at the deepest, the required power of the engine increased by approximately 13% from 35.48 kW to 40.11 kW, and the power transmission efficiency also increased significantly from 66% to 95%. Among them, the power transmission efficiency of the rear axle was significantly increased from 38% to 59%, which was the most affected. As the tillage depth increased, the overall power requirement is greatly increased due to the resulting workload, but the fuel consumption and the specific fuel consumption are reduced because the engine speed of the tractor is reduced. As the tillage depth increased from 11 cm to 23 cm, the fuel consumption rate was rather reduced by 13.5% as the engine rotational speed decreased 11.3% due to the increase work load of tractor. In addition, the specific fuel consumption decreased from 302.44 g/kWh to 236.93 g/kWh, showing a fuel consumption saving of up to 21.7% during moldboard plow. In addition, as the tillage depth increased, the ratio of the value excluding the mechanical and hydraulic power requirements has significantly decreased from 34% to 5% as the power transmission efficiency increases. This study considers the soil properties according to the soil depth, as well as the power transmission efficiency and fuel consumption rate. The research results can provide useful information for research on power transmission efficiency and selection of an appropriate power source of agricultural tractor according to tillage depth during moldboard plowing and are expected to be used in various ways as basic studies of digital farming research in agricultural machinery.

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“…4WD (four-wheel-drive) can significantly reduce wheel slippage and improve the traction and driving stability of the vehicle [8,9]. 4WD torque distribution control could further improve the overall power performance of the travel machinery on this basis.…”

Section: Introductionmentioning

confidence: 99%

Study on the Control of Torque Distribution of 4WD Corn Harvester Operation Drive

et al. 2021

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In response to the poor adaptability of existing harvesters to complex operating conditions in the field, this study took a three-row four-wheel-drive (4WD) corn harvester as the research object, designed a traveling transmission system layout, proposed a control strategy of driving torque distribution, simulated, and analyzed each of the four states of harvester drive wheels slippage. The results showed that under the driving wheels slipping condition, after applying torque control, the adjustment time was 43.3% shorter than that without control in the case of single wheel slipping, 11.1% shorter than that without control in the case of two wheels slipping on the same axle, 41.4% shorter than that without control in the case of two wheels slipping on different axles, and 36.6% shorter than that without control in the case of three driving wheels slipping. The application of drive torque distribution control could significantly improve the traction and passing ability of the corn harvesters during operation, as well as made the harvester travel more smoothly, thus improving the harvest quality. The drive torque distribution control can be applied not only to the three-row corn harvester, but also to other types of harvesters, and self-propelled agricultural machinery to enhance their adaptability, improving their operation quality. It has a significant reference value for the development of the driving system on walking agricultural machinery.

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Estimation of tractor wheel slippage with different tire pressures for 4wd and 2wd driving systems

Cited by 5 publications

References 20 publications

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

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

Power Transmission Efficiency Analysis of 42 kW Power Agricultural Tractor According to Tillage Depth during Moldboard Plowing

Study on the Control of Torque Distribution of 4WD Corn Harvester Operation Drive

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