首页|A novel synchronizer for clutchless automated manual transmissions applied in electric vehicles
A novel synchronizer for clutchless automated manual transmissions applied in electric vehicles
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NSTL
Elsevier
The clutchless automated manual transmissions (CLAMTs) can make electric vehicles improve the dynamic and economy performance by fully playing the role of drive motor. As one of the most important component in the transmission system, synchronizer is used to ensure smooth shift. However, the inertial lock ring synchronizer (ILRS) that used commonly cannot give full paly to the dynamics characteristics of the electric drive system. To improve the shift quality of CLAMTs based on the unique needs of electric vehicles, the weaknesses at declining shifting impact of ILRS and harpoon-shift synchronizer which are typical representatives of existing synchronizers are explained, a novel synchronizer named elastic load friction ring synchronizer (ELFRS) is designed and the working principle at eliminating the shifting impact is analyzed. After establishing the transmission and actuator models, a control strategy matching the synchronizers based on Fuzzy-PID is proposed, which achieves the comfortable shift and dynamic shift control goals. The simulation results show that ELFRS reduces most of the shift shock compared to ILRS and harpoon-shift synchronizer. The research has practical application value to improve the performance of CLAMTs.
Clutchless automated manual transmissionDynamicsElastic load friction ring synchronizerElectric vehicleShift quality
Zhang L.、Yang H.、Peng Y.、Li S.
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Hebei Key Laboratory of Special Delivery Equipment Yanshan University
State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures Shijiazhuang Tiedao University
NSTL
Elsevier
