Working Load Analysis of a 42 kW Class Agricultural Tractor According to Tillage Type and Gear Selection during Rotary Tillage Operation

Yeon-Soo Kim, Bo-Min Bae, Wan-Soo Kim, Yong-Joo Kim (), Sang-Dae Lee and Taek-Jin Kim ()
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Yeon-Soo Kim: Department of Bio-Industrial Machinery Engineering, Pusan National University, Miryang 50463, Republic of Korea
Bo-Min Bae: Department of Bio-Industrial Machinery Engineering, Pusan National University, Miryang 50463, Republic of Korea
Wan-Soo Kim: Department of Bio-Industrial Machinery Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
Yong-Joo Kim: Department of Biosystems Machinery Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
Sang-Dae Lee: Smart Agricultural R&D Group, Korea Institute of Industrial Technology (KITECH), Gimje 54325, Republic of Korea
Taek-Jin Kim: Department of Drive System Team, TYM R&D Center, Iksan 54576, Republic of Korea

Agriculture, 2023, vol. 13, issue 8, 1-16

Abstract: The objective of this study was to analyze the effect of tillage type (i.e., primary and secondary tillage) and gear selection (P1L2 to P1L4) on the working load of tractor–implement systems during rotary tillage. Soil properties change with depth, and differences in properties along the depth distribution, such as the location of formation of the hardpan layer, internal friction angle, and moisture content, affect the load of rotary tillage operations. Therefore, the physical properties of soil along the field depth distribution were measured to analyze the effect of tillage type and gear selection on workload in rotary tillage. In addition, a load measurement system equipped with PTO torque meter, axle torque meter, proximity sensor, and RTK-GPS were configured on the 42 kW agricultural tractor. The experimental results show that the combination of tillage type and gear selection has a wide-ranging effect on the tractor’s workload and performance when the rotavator operated at the same tilling depth. Overall working load was higher by up to 14% (engine) and 29.1% (PTO shaft) in primary tillage compared to secondary tillage when the gear selection was the same. When the tillage type is the same, it was analyzed that the overall average torque increased by up to 35.9% (engine) and 33.9% (PTO shaft) in P1L4 compared to P1L2 according to gear selection. Based on load analysis results, it was found that the effect of gear selection (Engine: 4–14%, PTO: 12.1–28.6%) on engine and PTO loads was higher than that of tillage type (Engine: 31.6–35.1%, PTO: 31.9–32.8%), and the power requirement tended to decrease in secondary tillage. Therefore, working load should be considered according to the soil environment and tillage type when designing agricultural machinery system.

Keywords: working load; agricultural tractor; rotary tillage; soil property; tillage type (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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