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http://dx.doi.org/10.7467/KSAE.2014.22.7.001

Experimental Research on the Power Saving Effect Evaluation of a Variable Displacement Vane Pump for an Automatic Transmission  

Kim, Chulsoo (Daegu-Gyeongbuk Division, Korea Automotive Technology Institute)
Bae, Chulyong (Daegu-Gyeongbuk Division, Korea Automotive Technology Institute)
Kim, Chanjung (Daegu-Gyeongbuk Division, Korea Automotive Technology Institute)
Kim, Kyusik (Daegu-Gyeongbuk Division, Korea Automotive Technology Institute)
Son, Taekwan (Department of Mechanical & Automotive Engineering, Keimyung University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.22, no.7, 2014 , pp. 1-7 More about this Journal
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.
Keywords
Lubrication; Vane pump; Variable displacement; Automatic transmission; Transmission dynamometer test; Discharge flow rate control;
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