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자동변속기 오일 소요유량 시험법개발 및 측정데이터 분석
정헌술(H. S. Jeong),오석형(S. H. Oh),이재신(J. S. Yi),임진승(J. S. Lim) 유공압건설기계학회 2009 드라이브·컨트롤 Vol.6 No.1
Automatic power transmission systems consisted of a torque converter and several planetary gear sets, clutches and brakes are controlled by a hydraulic shift control circuit and an electronic transmission control unit. The hydraulic circuit serves for the operation of the torque converter and lubrication oil supply of the transmission system as well as for the actuation of clutches for the automatic gear shift. The complicated hydraulic control circuit constructed by many spools, solenoids, orifices and flow passages are integrated into one small valve block and it is powered by one hydraulic pump. In this paper, a test equipment was developed to measure the oil consumption of each component at various wide operating conditions. Test data about 730 sets acquired from five test items are analyzed and discussed on the oil capacity of the circuit.