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논문 기본 정보

자료유형
학술저널
저자정보
김수철 (KSAM, Dept. of Biosysems and Biomaterials Science and Engineering, and Institute for Agricultural and Life Sciences, Seoul National University) 김경욱 (KSAM, Dept. of Biosysems and Biomaterials Science and Engineering, and Institute for Agricultural and Life Sciences, Seoul National University) 김대철 (Technical Center Tongyang Moolsan Co.)
저널정보
한국농업기계학회 바이오시스템공학(구 한국농업기계학회지) 바이오시스템공학 제34권 제2호
발행연도
2009.1
수록면
71 - 76 (6page)

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초록· 키워드

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This study was conducted to investigate the load acting on a tractor engine when it delivers the maximum power at drawbar. The results of the drawbar tests on the 5 locally-made and 14 imported tractors conducted at NIAE in 2004, and the 15 tractors tested at OECD test stations in foreign countries were analyzed and presented by the torque load ratio, defined as a ratio of the engine torque load caused by drawbar pull to its full-load capacity, as a function of pull speed. The NIAE test results showed that the torque load ratio increased from 20 to 80% with pull speed less than 5 km/h. At speeds faster than 5 km/h, it was 80${\sim}$110% regardless of the pull speed. However, the OECD test results showed that the torque load ratio was evaluated mostly to be 70${\sim}$90% in the entire pull speed range. The same trend was also shown for the maximum drawbar load. The difference in the torque load ratio may be attributable to bias-ply tires for locally-made and some imported tractors. It is also suggested that the input torque load may be increased safely up to 120% of the full load capacity of the tractor engine for an accelerated life test of tractor transmissions.

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