Journal of Biosystems Engineering

Korean Society for Agricultural Machinery (한국농업기계학회)
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Research Trends for Performance, Safety, and Comfort Evaluation of Agricultural Tractors: A Review

  • Kabir, Md. Shaha Nur (Department of Biosystems Machinery Engineering, Chungnam National University) ;
  • Ryu, Myong-Jin (Department of Biosystems Machinery Engineering, Chungnam National University) ;
  • Chung, Sun-Ok (Department of Biosystems Machinery Engineering, Chungnam National University) ;
  • Kim, Yong-Joo (Machinery Technology Group, Advanced R&D Center, LS Mtron Ltd.) ;
  • Choi, Chang-Hyun (Department of Bio-mechatronic Engineering, Sungkyunkwan University) ;
  • Hong, Soon-Jung (Rural Development Administration) ;
  • Sung, Je-Hoon (Department of Agricultural Engineering, National Academy of Agricultural Science, Rural Development Administration)
  • Received : 2013.12.13
  • Accepted : 2014.01.28
  • Published : 2014.03.01
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Abstract

Background: Significant technological development and changes happened in the tractor industries. Contrariwise, the test procedures of the major standard development organizations (SDO's) remained unchanged or with a little modification over the years, demanding new tractor test standards or improvement of existing ones for tractor performance, safety, and comfort. Purpose: This study focuses on reviewing the research trends regarding performance, safety and comfort evaluation of agricultural tractors. Based on this review, few recommendations were proposed to revise or improve the current test standards. Review: Tractor power take-off power test using the DC electric dynamometer reduced human error in the testing process and increased the accuracy of the test results. GPS signals were used to determine acceleration and converted into torque. High capacity double extended octagonal ring dynamometer has been designed to measure drawbar forces. Numerical optimization methodology has been used to design three-point hitch. Numerous technologies, driving strategies, and transmission characteristics are being considered for reducing emissions of gaseous and particulate pollutants. Engine emission control technology standards need to be revised to meet the exhaust regulations for agricultural tractors. Finite Element Analysis (FEA) program has been used to design Roll-Over Protective Structures (ROPS). Program and methodology has been presented for testing tractor brake systems. Whole-body vibration emission levels have been found to be very dependent upon the nature of field operation performed, and the test track techniques required development/adaptation to improve their suitability during standardized assessment. Emphasizes should be given to improve visibility and thermal environment inside the cab for tractor operator. Tractors need to be evaluated under electromagnetic compatibility test conditions due to large growing of electronic devices. Research trends reviewed in this paper can be considered for possible revision or improvement of tractor performance, safety, and comfort test standards.

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References

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