Abstract
In diesel engines, exhaust gas recirculation (EGR) is an efficient method for reducing NOx. EGR rates are commonly set according to the expected engine behavior, without considering the actual composition of the exhaust gases. In this paper, a new control system for EGR in passenger cars is presented, based on an exhaust gas oxygen (EGO) sensor as indicator of the combustion state as well as on a robust design approach to cope with the parameter variations. The proposed control has been designed for and tested on an Audi TDI engine and has been found to yield a similar performance as the conventional controllers for the standard engine, in spite of the transport delays between combustion process and measurement. Due to the presence of feedback, reduced sensitivity and/or detectability of wear, production irregularities, changes of poerating conditioins and calibrations faults are expected from long-time measurements.
| Original language | English |
|---|---|
| Pages (from-to) | 37-48 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Control Systems Technology |
| Publication status | Published - Dec 1995 |
Fields of science
- 202 Electrical Engineering, Electronics, Information Engineering
- 202027 Mechatronics
- 202034 Control engineering
- 203027 Internal combustion engines
- 206001 Biomedical engineering
- 206002 Electro-medical engineering
- 207109 Pollutant emission