Journal of Jilin University(Engineering and Technology Edition) ›› 2021, Vol. 51 ›› Issue (5): 1575-1582.doi: 10.13229/j.cnki.jdxbgxb20200544

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Starting control of P2.5 plug⁃in hybrid configuration dual⁃clutch based on driver's intention recognition

Yong LUO1,2,3(),Yong-heng WEI2,Huan HUANG2,Ren-jie XIAO2,Lin REN2,Huan-yu CUI3   

  1. 1.State Key Laboratory of Vehicle NVH and Safety Control，China Automotive Engineering Research Institute Co. ，Ltd. ，Chongqing 401122，China
    2.Key Laboratory of Advanced Manufacturing Technology for Automobile Parts，Chongqing University of Technology，Chongqing 400054，China
    3.Department of Technology，Chongqing Tsingshan Industrial Co. ，Ltd. ，Chongqing 402761，China
  • Received:2020-07-19 Online:2021-09-01 Published:2021-09-16

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Abstract:

During the starting process of single clutch， the temperature rise of clutch plate is obvious and the sliding friction power is uneven， which seriously affects the service life of DCT. Based on the configuration of P2.5 plug-in hybrid electric vehicle equipped with DCT， combined with the starting dynamics analysis and considering the driver's starting intention， a starting strategy based on multi-layer fuzzy control is proposed. The driver's starting intention is identified according to the accelerator pedal opening and its change rate， and the clutch combination oil pressure is deduced according to the starting intention to control the transmission torque， at the same time， the clutch separation threshold is judged according to the driver's starting intention. The results show that： compared with single clutch starting， the starting time can be shortened by 12.6% and the impact degree can be reduced by 14.0% while effectively balancing the sliding work of the two clutches.

Key words: vehicle engineering, P2.5 plug-in hybrid configuration, wet dual clutch transmission, multilayer fuzzy controller, driver's starting intention recognition

CLC Number: 

  • TH13

Fig.1

Structure of P2.5 plug-in hybrid system based on DCT"

Fig.2

Clutch oil pressure/torque transmission diagram"

Fig.3

Simplified DCT system dynamics model based on P2.5 configuration"

Fig.4

Control logic diagram of dual clutch joint starting process"

Fig.5

Simulation of driver starting intention verification"

Fig.6

Simulation results of starting process with 15% accelerator pedal opening"

Fig.7

Simulation results of starting process with 15% accelerator pedal opening"

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