Abstract
The keys to the shifting process of automatic mechanical transmission (AMT) based on "virtual clutch" technology are the active synchronization of motor and the shift-in control of actuator in the process of power interruption. Through an analysis on the engagement mechanism of AMT synchronizer, an active synchronization method of transmission input shaft based on motor torque control is proposed, in which the synchronous friction torque generated by shifting force in traditional synchronizer is replaced by motor output torque to eliminate the rotation speed difference between the driving and driven parts of synchronizer. Finally the results of verification test show that the AMT shifting control method based on motor torque control can reduce the wear of synchronizer, shorten the time of power interruption and enhance the success rate and reliability of up shifting.
| Original language | English |
|---|---|
| Pages (from-to) | 337-343 |
| Number of pages | 7 |
| Journal | Qiche Gongcheng/Automotive Engineering |
| Volume | 38 |
| Issue number | 3 |
| Publication status | Published - 25 Mar 2016 |
Keywords
- AMT
- Hybrid electric bus
- Shifting process
- Torque control