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http://dx.doi.org/10.5307/JBE.2011.36.2.79

Analysis of Power Requirement of Agricultural Tractor by Major Field Operation  

Kim, Yong-Joo (LS Mtron LTD.)
Chung, Sun-Ok (Dept. of Biosystems Machinery Engineering, Chungnam National University)
Park, Seung-Jae (Division of Bioresource System Engineering, Chonbuk National University)
Choi, Chang-Hyun (Dept. of Bio-Mechatronic Engineering, Sungkyunkwan University)
Publication Information
Journal of Biosystems Engineering / v.36, no.2, 2011 , pp. 79-88 More about this Journal
Abstract
The purpose of this study was to analyze power requirement of an agricultural tractor by major field operations. First a survey was conducted to obtain annual usage ratio of agricultural tractor by field operation. Plowing, rotary tillage, and loader operations were selected as major field operations of agricultural tractor. Second, a power measurement system was constructed with strain-gauge sensors to measure torque of four driving axles and a PTO axle, speed sensors to measure rotational speed of the driving axles and an engine shaft, pressure sensors to measure pressure of hydraulic pumps, an I/O interface to acquire the sensor signals, and an embedded system to calculate power requirement. Third, the major field operations were experimented under fields with different soil conditions following planned operation paths. Power requirement was analyzed during the total operation period consisted of actual operation period (plowing, rotary tillage, and loader operations) and period before and after the actual operation (3-point hitch operating, forward and reverse driving, braking, and steering). Power requirement of tractor major components such as driving axle part, PTO part, main hydraulic part, and auxiliary hydraulic part were measured and calculated to determine usage ratio of agricultural tractor power. Results of averaged power requirement for actual field operation and total operation were 23.1 and 17.5 kW, 24.6 and 19.1 kW, and 14.9 and 8.9 kW, respectively, for plowing, rotary tillage, and loader operations. The results showed that rotary tillage required the greatest power among the operations. Averaged power requirement of driving axles, PTO axle, main hydraulic part, and auxiliary part during the actual field operation were 8.1, 7.8, 3.4, and 1.5 kW, respectively, and the total requirement power was about 70 % (20.8 kW) of the rated power. Averaged power requirement of driving axles, PTO axle, main hydraulic, and auxiliary hydraulic for the total operation period were 6.5, 6.0, 2.1, 0.9 kW, respectively, and total requirement power was about 52 % (15.5 kW) of the rated power. Driving axles required the greatest amount of power among the components.
Keywords
Agricultural tractor; Power requirement; Plowing; Rotary tillage; Loader operation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Lee, D. E., I. G. Hwang, D. I. Jeon and S. S. Park. 2008. Development and optimization of the hybrid engine system model to improve the fuel economy. Transactions of the KSAE 16(6):65-73. (In Korean)   과학기술학회마을
2 MIFAFF. 2007. Number of Agricultural Machinety. Ministry for Food, Agriculture, Forestry and Fisheries, Gwacheon, Korea.
3 Nahmgung, M. J. 2001. Load Analysis of Driving Axles and Life Evaluation of Driving Gear of PTO on Tractors. Ph.D. Dissertation, Sungkyunkwan University, Suwon, Korea. (In Korean)
4 Park, S. H., Y. J. Kim, D. H. Im, C. K. Kim, S. C. Jung, H. J. Kim, J. S. Lee and S. S. Kim. 2010. Characteristics of tractor PTO power and work loads. Journal of Biosystems Engineering 35(1):15-20. (In Korean)   과학기술학회마을   DOI
5 RDA. 2008. Symposium on the Energy Saving Technology and Diffusion for Low Carbon Green Growth. Rural Development Administration, Suwon, Korea.
6 Ro, L. S., K. C. Jeong, K. H. Han and S. K. Lee. 2006. Designing control logic for reducing toxic exhaust gas in parallel HEV. Proceeding of the KSAE 2006 Spring Conference 9(3):1717-1722. (In Korean)
7 Ryu, K. H. 2004. Tractor Engineering Principles. Munundang, Seoul, Korea.
8 Seo, I. H., B. H. Cho, C. S. Kim, J. J. Oh, S. C. Cho, Y. G. Lee and K. D. Kim. 2007. Formation of working path and development of performance appraising technology for tractor unmanned tillage(3) -develop of a program and algorithm for tractor working path-. Proceedings of the KSAM 2007 Summer Conference 12(2):364-372. (In Korean)
9 Cho, S. T., H. S. Jo, J. M. Lee and Y. I. Park. 1997. A development of driving control method for hybrid vehicle using power split ratio determination algorithm. Proceeding of the KSAE 1997 Fall Conference 4(2):707-713. (In Korean)
10 EIA. 2008. Annual Energy Outlook. Energy Information Administrator, Washington, DC., USA.
11 Kim, D. C. 1998. Analysis of Load Spectrum of Tractor Drive Line. Master’s thesis, Seoul National University, Seoul, Korea. (In Korean)
12 Kim, D. J. 2004. Hydraulic Engineering. Bookshill, Seoul, Korea.
13 KNOC. 2010. Council for International Petrol Price Professionals. Korea National Oil Corporation, Anyang, Korea.
14 KSAM. 2009. Agricultural Machinery Yearbook in Republic of Korea. Korean Society for Agricultural Machinery, Suwon, Korea.