Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (2): 76-81.

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Modeling and Optimization of Shift Process of a Novel Power Shift Transmission

Tan Di1,2  Luo Yu-tao1,2   

  1. 1.School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China; 2.Guangdong Provincial Key Laboratory of Automotive Engineering,Guangzhou 510640,Guangdong,China
  • Received:2011-03-10 Revised:2011-12-02 Online:2012-02-25 Published:2012-01-04
  • Contact: 罗玉涛(1972-) ，男，教授，主要从事电动汽车及车辆系统动力学研究．E-mail:ctytluo@scut.edu.cn E-mail:di.tan@mail.scut.edu.cn
  • About author:谭迪(1983-) ，女，博士，主要从事电动汽车及其系统动力学研究．
  • Supported by:

    国家“863”计划项目( 2012AA110702)

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Abstract:

Proposed in this paper is a novel power shift transmission that inherits the advantages of power shift of dual-clutch transmission and achieves more speed ratios with limited gear pairs. Then,based on further analyses of the structure and the mechanism of the transmission,a dynamic simulation model containing the shift dynamics models and the shift control models is established for the vehicle drive system,and the factors affecting the shift quality are analyzed and optimized. Moreover,in order to verify the shift performance,the proposed simulation model is applied to the successive upshift of the transmission. The results show that the novel power shift transmission not only achieves 2( n + m) speed ratios with n + m fixed-axis gear pairs but also ensures high power shift quality.

Key words: power shift, shift control, modeling, simulation, optimization