An Experimental Investigation of Drawbar Pull Performance of Front Wheel Assist Tractors

Shafaei, S.M.; Loghavi, M.; Kamgar, S.

doi:10.1007/s41403-022-00370-y

Cited by 3 publications

(2 citation statements)

References 126 publications

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“…Various models describing the functional relationship of DP vs. s and TE vs. NTR are useful to determine the test tractor's tractive performance. The authors of previous research works have used, for example, a quadratic polynomial regression technique [33][34][35] or a nonlinear regression technique [36]. The regression equations for drawbar pull DP and tractive efficiency TE used in reference [36] were applied to evaluate the traction performance of the spike device with the worm gear unit and are expressed by Equations ( 5) and ( 6):…”

Section: Tractive Performance Evaluation Of Various Front-driving Whe...mentioning

confidence: 99%

Spike Device with Worm Gear Unit for Driving Wheels to Improve the Traction Performance of Compact Tractors on Grass Plots

Abrahám,

Majdan,

Kollárová

et al. 2024

Agriculture

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In general, energy loss reduction via the interaction of tires with the ground improves tractor traction performance when a drawbar pull is generated. This paper is examines the driving wheels with steel spikes for a tractor equipped with modern radial tires. An improved design of the spike device that allows for the change between an active and inactive position of the spikes is presented. The traction performance of a compact articulated tractor with the spike device was tested on a grass plot with two soil moisture contents (SMC). The highest difference in the drawbar pull in the range from 14.2% to 40.5% and from 17.1% to 36.8% was reached by the spikes in the active position in comparison with the tires without spikes, which were at the slip range from 45% to 5% in the case of the low SMC when the test tractor was in the 3rd and 1st gear. The motion resistance difference between the spikes in the active position and the tires without spikes was 11.8% and 2.5% at the low and medium SMC, respectively. At the low and medium SMC, the highest tractive efficiency of 0.765 (0.721) and 0.757 (0.731) was reached by the spikes in the active position when the test tractor was in the 1st (3rd) gear in comparison with 0.736 (0.7) and 0.723 (0.708) in the case of the tires without spikes. The results indicated that the spike device allowed for the improvement of tractor tractive performance.

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Section: Tractive Performance Evaluation Of Various Front-driving Whe...mentioning

confidence: 99%

Spike Device with Worm Gear Unit for Driving Wheels to Improve the Traction Performance of Compact Tractors on Grass Plots

Abrahám,

Majdan,

Kollárová

et al. 2024

Agriculture

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“…The emergence of industrial-scale machinery and implements for agriculture in the last century has enabled significant productivity gains and operational performance improvements, definitively changing the trajectory of production techniques and increasing the supply of agricultural products (Kim et al, 2021), such as articulated tractors (Shafaei et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Energy performance of an agricultural articulated tractor: Manual and automatic modes

Zimmermann

Jasper

Costa

et al. 2023

Rev. bras. eng. agríc. ambient.

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Automatic production management (APM) is a tool that assists in the operations of agricultural tractors, increasing yield and energy efficiency. The objective of the experiment was to compare the energy and operational performance of a 373-kW articulated tractor equipped with APM and manual mode of engine transmission and rotation, across different real-world speeds. The experiment was conducted in a randomized block design with five replicates, using a split-plot arrangement with two system modes (manual and automatic) in the plots and four real-world speeds (4, 6, 8, and 10 km h-1) in the subplots, totaling 40 experimental units. The evaluated variables were: wheel slippage; engine rotation; hourly and specific fuel consumptions; drawbar force, power, and yield; operating speed; and engine thermal efficiency. The variance of the data was analyzed using Tukey’s test for the first factor, and regression analysis for the second factor and interactions. The automatic mode showed lower engine rotation and wheel slippage without compromising the other variables. The use of this mode showed energy advantages at 4 and 6 km h-1 by resulting in less fuel consumption per hour. In addition, the manual mode presented higher thermal efficiency at lower speeds than the automatic mode, which showed a linear increase.

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Review and analysis of state of the art, challenges, and opportunities concerned with development of drawbar dynamometer for tractor platforms

Shafaei,

Mousazadeh

2024

Computers and Electronics in Agriculture

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An Experimental Investigation of Drawbar Pull Performance of Front Wheel Assist Tractors

Cited by 3 publications

References 126 publications

Spike Device with Worm Gear Unit for Driving Wheels to Improve the Traction Performance of Compact Tractors on Grass Plots

Spike Device with Worm Gear Unit for Driving Wheels to Improve the Traction Performance of Compact Tractors on Grass Plots

Energy performance of an agricultural articulated tractor: Manual and automatic modes

Review and analysis of state of the art, challenges, and opportunities concerned with development of drawbar dynamometer for tractor platforms

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