Abstract
Abstract : A variable displacement vane pump is possible to improve the fuel economy by varying the pump capacity with a vane mechanism according to the engine operating speed range and reducing its driving torque. In general the experimental evaluation of the vane pump for the transmission has been performed mainly not with the vehicle or dynamometer test rig but with component test rig due to the implementation and safety problems. In this paper, in order to evaluate the performance of the developed vane pump as well as the compatibility with other rotary and hydraulic components of the target transmission, the transmission dynamometer based test rig is implemented where the developed pump is built into it and then the variable pump capacity and effect of power reduction are investigated experimentally. Key words : Lubrication(윤활), Vane pump(베인 펌프), Variable displacement(가변용량), Automatic transmission(자동 변속기), Transmission dynamometer test( 변속기 다이나모미터 평가), Discharge flow rate control( 토출 유량 제어)
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