Abstract
To improve the shift quality of vehicle, an electro-hydraulic proportional valve for the gear shifting of automatic transmission is proposed with its working principle analyzed and a dynamic model set up for the flow control valve of proportional valve at opening and closing moments. A simulation is conducted on the dynamic characteristics of proportional valve with Matlab/Simulink, and the bench test verifies the correctness of the modeling and simulation techniques. The results of test also show that under the condition with a oil pressure of 12 bar and a solenoid supply voltage of 42 V, the response time of electro-hydraulic valve for pressure build up is about 70 ms while that for pressure release is around 50 ms, meeting the requirements of practical control.
| Original language | English |
|---|---|
| Pages (from-to) | 229-233 |
| Number of pages | 5 |
| Journal | Qiche Gongcheng/Automotive Engineering |
| Volume | 35 |
| Issue number | 3 |
| Publication status | Published - Mar 2013 |
Keywords
- Automatic transmission
- Dynamic response
- Proportional solenoid valve
- Simulation