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The research on electro-hydraulic control technique of construction machinery's transmission

LIU Chun-chao, WANG Wen-chao, ZHANG Qing-Wu, MA Ying-hua, MAN Jing-hua (Shantui Construction Machinery Co.,Torque Convertor Factory, Shandong Jining 272023, China)  
In this paper, the advanced electro-hydraulic control plan of mechanical transmission system for construction machinery abroad is introduced. The electro-hydraulic proportion technology is discussed. Based on mechanical transmission system for construction machinery in China, an electro-hydraulic control plan is studied and analyzed, and an electro-hydraulic proportion technology is applied in transmission system of construction machinery. The transmission case of construction machinery is controlled by applying electro-hydraulic proportion technology, and an optimal fitting for pressure-time curve of transmission case is made.
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