Abstract
A variable nozzle turbocharger (VNT) was applied to a 2.2-liter L4 natural gas engine, and a VNT control system was designed to operate it. Based on VNT matching test results, a VNT control strategy was studied, in which VNT adjustment is carried out through pre-calibrated VNT handling rod position, combined with a closed-loop target boost pressure feedback using proportional-integral-derivative(PID) algorithm. Experimental results showed that the VNT control system presented in this thesis can lead to optimized performance of VNT, increase engine volumetric efficiency over a wide speed range, improve engine dynamic characteristics and upgrade economic performance. Copyright.
| Original language | English |
|---|---|
| Pages (from-to) | 37-41 |
| Number of pages | 5 |
| Journal | Journal of Beijing Institute of Technology (English Edition) |
| Volume | 19 |
| Issue number | 1 |
| Publication status | Published - Mar 2010 |
Keywords
- Control strategy
- Experimental study
- Natural gas engine
- Proportional-integral-derivative(PID) control
- Variable nozzle turbocharger (VNT)