Journal of South China University of Technology (Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (9): 123-130.doi: 10.3969/j.issn.1000-565X.2016.09.018

• Automotive Engineering • Previous Articles     Next Articles

Coordination Control of Engine Starting and DCT Shifting of Hybrid Electric Vehicles While Driving

LIU Yong-gang1 CHEN Liang2 QIN Da-tong1 LEI Zhen-zhen1,3 WU Rui1   

  1. 1.State Key Laboratory of Mechanical Transmission //School of Automotive Engineering,Chongqing University,Chongqing 400044,China; 2.Shanghai Automobile Gear Works Co.,Ltd.,Shanghai 201807,China; 3.School of Mechanical and Power Engineering,Chongqing University of Science and Technology,Chongqing 401331,China
  • Received:2015-11-20 Revised:2016-05-23 Online:2016-09-25 Published:2016-08-21
  • Contact: 刘永刚( 1982-) ，男，博士，副教授，主要从事车辆动力传动及其综合控制研究． E-mail:andyliuyg@cqu.edu.cn
  • About author:刘永刚( 1982-) ，男，博士，副教授，主要从事车辆动力传动及其综合控制研究．
  • Supported by:
    Supported by the National Natural Science Foundation of China( 51305468) and the Major Application Development Project in Chongqing ( cstc2015yykfc60003)

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Abstract: On the basis of the distinctive structure and performance advantages of dual clutch transmission ( DCT) ,a single-motor full hybrid electric system equipped with DCT is proposed and its kinetic model is constructed.Then,the rule-based method is adopted to analyze the scope of working mode and the schedule of economical shift by taking the optimal system efficiency as the objective,and a comprehensive working schedule of mode switching and DCT shifting is formulated for hybrid electric vehicles ( HEV) .In view of the intersection between mode switching points and shifting points in the comprehensive working schedule,the coordination control strategy and method of mode switching and shifting are proposed.Finally,on the Matlab /Simulink platform,the engine starting and upshifting coordination control while driving is analyzed by simulations.The results indicate that the proposed coordination control strategy of engine starting and shifting while driving is effective in improving the performance of the proposed system,specifically,it can avoid the clash between mode switching and shifting with much less mode switching and shifting time,which means that the structure advantage of the proposed system are fully utilized.

Key words: hybrid electric vehicles, dual clutch transmission, mode switching, shifting, control strategy

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