Abstract
Tillage energy efficiency increase is one of the important tasks in improving the profitability and sustainability of agricultural production. The paper proposes to increase cultivation energy efficiency due to the use of traction-drive tilling implement with active working bodies, not creating a high traction resistance and not requiring a large towing weight of aggregated tractor. The analysis of the energy efficiency of soil cultivation using traction-driven tilling implements with active working bodies has been carried out, and theoretical dependences of the coefficient of efficiency of a traction-driven machine-tractor unit has been obtained. The possibility of increasing the efficiency of the unit by reducing slipping of the tractor wheels and losses on rolling of the unit has been determined, which has been achieved by transferring part of the power through the power take-off shaft (PTO) of tractor to the drive working bodies of tilling implement, which compensate for traction resistance of the implement and create a pushing force, reducing the resistance to rolling.
Highlights
The energy efficiency of agricultural production is largely determined by the energy efficiency of each process
The reduction of tillage implement traction resistance was achieved by transferring the main part of the power consumed by the instrument on the process of loosening the soil through the power take-off shaft (PTO) of the tractor to drive rotary working bodies which in turn create a pushing force, minimizing tractive resistance of tilling implement [6]
It is established [9] that the coefficient of efficiency of the tractor in traction-drive mode can be presented by the following formula: ( ) tr 1− K pto
Summary
The energy efficiency of agricultural production is largely determined by the energy efficiency of each process. In plant growing the most energy-intensive operations include soil tillage, which accounts for 40 % of energy costs throughout the technology [1, 2] In this regard, relevant and meaningful are studies aimed at optimizing the technological parameters of machine-tractor units, allowing more efficient use of energy resources in plant growing. Tillage efficiency increase is possible due to the use of traction-drive tilling implement with active working bodies, not creating a high traction resistance and not requiring a large towing weight of aggregated tractor [2,3,4,5]. Most full energy efficiency of the traction-driven machine-tractor unit reflects such parameter as the coefficient of efficiency of the machinetractor unit (CoE MTU) This parameter depends on the process, machine design, drive wheel system, weight of the unit, tillage regimes and other constructional and technological parameters
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