Journal of South China University of Technology (Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (7): 41-46.doi: 10.3969/j.issn.1000-565X.2016.07.007

• Mechanical Engineering • Previous Articles     Next Articles

Analysis of Dynamic Characteristics of Hydraulic Torque Converter Applied to Wheel Loader

WANG Zhen-bao QIN Si-cheng   

  1. College of Mechanical Science and Engineering,Jilin University,Changchun 130022,Jilin,China
  • Received:2015-11-27 Revised:2016-05-05 Online:2016-07-25 Published:2016-06-05
  • Contact: 秦四成(1962-)，男，教授，博士生导师，主要从事工程车辆节能技术研究． E-mail:qsc925@hotmail.com
  • About author:王振宝(1989-)，男，博士生，主要从事工程车辆节能技术研究． E-mail:wangzhenbao1989@126． com
  • Supported by:
    Supported by the National Key Research and Development Program of the Ministry of Science and Technology of China(2013BAF07B04)

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Abstract: In order to analyze the dynamic characteristics of hydraulic torque converter applied to wheel loader,firstly,the original steady performance of hydraulic torque converter was discovered through a bench test.Second- ly,the V-shaped shovel and transport operations of ZL50 wheel loader were tested.Then,on the basis of test data,the distributions of engine torque were analyzed.Moreover,a mathematical model of hydraulic torque converter was established according to Newton's law of motion and used to investigate the dynamic characteristics of hydraulic torque converter in the two above-mentioned working conditions.Finally,a comparison is made between the dyna- mic test values of torque ratio and the static ones.The results show that the dynamic performance of torque converter can be replaced by the steady one when wheel loader is in transport condition.However,as the fluctuation range of angular acceleration is too large in V-shaped shovel operation，the dynamic characteristics must be considered.

Key words: wheel loader, hydraulic torque converter, dynamic characteristics, torque, shovel operations, transport operations

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