Journal of South China University of Technology (Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (3): 36-43.doi: 10.3969/j.issn.1000-565X.2016.03.006

• Mechanical Engineering • Previous Articles     Next Articles

Design and Analysis of Double-Impeller Torque Converter with Continuously Variable Capacity

MA Wen-xing1 JI Long-fei1 XU Wen2 LIU Chun-bao1   

  1. 1.College of Mechanical Science and Engineering,Jilin University,Changchun 130022,Jilin,China; 2.Dongfeng Automobile Co.,Ltd.,Dongfeng Nissan Passenger Vehicle Company,Guangzhou 510080,Guangdong,China
  • Received:2015-09-16 Revised:2015-11-16 Online:2016-03-25 Published:2016-02-02
  • Contact: 刘春宝(1980-)，男，博士，副教授，主要从事液力传动与自动变速研究． E-mail:liuanbc@163.com
  • About author:马文星(1962-)，男，教授，博士生导师，主要从事液力传动与自动变速研究． E-mail:mawx@ jlu． edu． cn
  • Supported by:
    Supported by the National High-tech R&D Program of China(2014AA041502)

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Abstract: Firstly,a high-performance general three-element centripetal turbine torque converter with an effective cycle round diameter of 425mm was selected as a reference prototype to design a prototype with the same perfor- mance by means of similar-design method.Secondly,the cycle round and blades of double-impeller torque converter were obtained by segmenting the impeller blades of the prototype reasonably.Then,the structure of slip clutch was designed,and the main technical parameters of slip clutch and friction plate were determined.Finally,the designed double-impeller torque converter was calculated numerically by means of CFD (Computational Fluid Dynamics) method to obtain the capacity characteristics and the original characteristics under such three conditions as double working impellers,single working impeller and slipping.It is indicated by comparative analysis that the designed double-impeller torque converter can realize the continuity and controllability of capacity through slip control,so that it can be used to the variable capacity matching between loader engine and torque converter.

Key words: double-impeller torque converter, slip control, property prediction, slip clutch, variable capacity