THEORETICAL SUBSTANTIATION OF IMPROVING THE TRACTION EFFICIENCY OF ELECTRIC TRACTORS THROUGH A PTO-BASED POWER ASSIST SYSTEM

Authors

  • Sevara Oymatova Doctoral student, “ Tashkent Institute of Irrigation and Agricultural Mechanization Engineers” National Research University
  • Abdujalol Boqiyev DSc, Professor

DOI:

https://doi.org/10.5281/zenodo.20283670

Keywords:

electric tractor, PTO, power assist system, DMCP, planetary gear, traction force, dynamic model, energy efficiency.

Abstract

This article develops the theoretical basis of a power assist system connected to the power take-off (PTO) shaft to increase the traction capability of electric tractors under high-load operating conditions. The study theoretically compares three powertrain layouts: a baseline dual-motor coupled powertrain (DMCP), a speed-coupling configuration with a power assist system, and a mixed-coupling configuration with a power assist system. The longitudinal motion of the tractor, wheel traction force, kinematic relationships of the planetary gear set, motor power demand, and energy consumption are described using mathematical equations. For 46 kW and 55 kW ploughing workload conditions, the power envelope, maximum traction force, and relative energy consumption were evaluated. The calculation results show that the integration of a PTO-based assist motor increases the traction force by 24.92-30.83% compared with the baseline DMCP. The speed-coupling configuration provides the highest traction force, whereas the mixed-coupling configuration is distinguished as a structurally simpler solution because it delivers torque directly to the output shaft. The proposed article can serve as a theoretical basis for selecting the power transmission architecture of electric tractors intended for agricultural working units.

 

This article develops the theoretical basis of a power assist system connected to the power take-off (PTO) shaft to increase the traction capability of electric tractors under high-load operating conditions. The study theoretically compares three powertrain layouts: a baseline dual-motor coupled powertrain (DMCP), a speed-coupling configuration with a power assist system, and a mixed-coupling configuration with a power assist system. The longitudinal motion of the tractor, wheel traction force, kinematic relationships of the planetary gear set, motor power demand, and energy consumption are described using mathematical equations. For 46 kW and 55 kW ploughing workload conditions, the power envelope, maximum traction force, and relative energy consumption were evaluated. The calculation results show that the integration of a PTO-based assist motor increases the traction force by 24.92-30.83% compared with the baseline DMCP. The speed-coupling configuration provides the highest traction force, whereas the mixed-coupling configuration is distinguished as a structurally simpler solution because it delivers torque directly to the output shaft. The proposed article can serve as a theoretical basis for selecting the power transmission architecture of electric tractors intended for agricultural working units.

 

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References

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Published

2026-05-19

Issue

Vol. 5 No. 5 (2026): Journal of Multidisciplinary Sciences and Innovations

Section

Articles

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Authors retain the copyright of their manuscripts, and all Open Access articles are disseminated under the terms of the Creative Commons Attribution License 4.0 (CC-BY), which licenses unrestricted use, distribution, and reproduction in any medium, provided that the original work is appropriately cited. The use of general descriptive names, trade names, trademarks, and so forth in this publication, even if not specifically identified, does not imply that these names are not protected by the relevant laws and regulations.

How to Cite

THEORETICAL SUBSTANTIATION OF IMPROVING THE TRACTION EFFICIENCY OF ELECTRIC TRACTORS THROUGH A PTO-BASED POWER ASSIST SYSTEM. (2026). Journal of Multidisciplinary Sciences and Innovations, 5(5), 1242-1251. https://doi.org/10.5281/zenodo.20283670

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