吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (6): 1677-1687.doi: 10.13229/j.cnki.jdxbgxb201706002

• Orginal Article • Previous Articles     Next Articles

Braking stability of tractor-semitrailer based on gear-shifting strategy of hydraulic retarder

HE Ren, CHEN Shan-shan   

  1. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
  • Received:2016-08-04 Online:2017-11-20 Published:2017-11-20

Abstract: The hydraulic retarder may change the distribution ratio the braking power of the tractor-semitrailer that negatively affects the braking stability. To solve this problem, a gear-shifting strategy of the hydraulic retarder is proposed. The strategy is designed to actively change the gear of the hydraulic retarder based on the relationship between the rear wheel of the tractor and the wheel of the semitrailer. With goal to optimize the locking sequence of the tractor-semitrailer, the Matlab/Stateflow is applied to design the gear-shifting strategy. Then this strategy is associated with the dynamic model of the tractor-semitrailer built with Matlab/Simulink to study the braking sequence during straight braking and the lateral motion during straight braking with lateral force. Simulation results show that the proposed strategy can help keep the optimum braking sequence, decrease the braking distance on the road with particular tire-road adhesion and improve the lateral stability of the tractor-semitrailer.

Key words: vehicle engineering, hydraulic retarder, gear-shifting strategy, tractor-semitrailer, braking stability

CLC Number: 

  • U461.3
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