吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (03): 602-606.doi: 10.7964/jdxbgxb201303008

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Efficiency control of hydrodynamic-mechanical transmission of engineering machinery

YAN Qing-dong1,2, YU Tao2, ZHU Li-jun3, WEI Wei1,2   

  1. 1. National Key Lab of Vehicular Transmission, Beijing Institute of Technology, Beijing 100081, China;
    2. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;
    3. Science Research Institute of China North Industries Group Corporation, Beijing 100089, China
  • Received:2012-04-05 Online:2013-05-01 Published:2013-05-01

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Abstract: When a high-powered bulldozer works under hydrodynamic conditions for a long time, the temperature of the transmission oil will excessively raise and the transmission efficiency will decrease. To solve such problem, the dynamics simulation model and efficiency control model of the hydrodynamic mechanical transmission system were proposed based on the research of it dynamics model. Then the Isight and SimuLink integrated simulation platform was built up to obtain the optimized parameters of PID controller using the design of experiment with Latin Hypercube method. Simulation and experiment results show that with the efficiency control of the transmission system using working delay action and heavy load prejudging techniques, the torque converter can work in its high efficiency region, and the overheating of the transmission oil can be effectively eased, therefore, the working efficiency of the bulldozer is obviously improved.

Key words: vehicle engineering, hydrodynamic-mechanical transmission, high-powered bulldozer, efficiency control, optimization

CLC Number: 

  • U463.2
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