| Issue |
E3S Web Conf.
Volume 268, 2021
2020 6th International Symposium on Vehicle Emission Supervision and Environment Protection (VESEP2020)
|
|
|---|---|---|
| Article Number | 01046 | |
| Number of page(s) | 11 | |
| DOI | https://doi.org/10.1051/e3sconf/202126801046 | |
| Published online | 11 June 2021 | |
Study on the effect of EGR control parameters on turbocharged diesel engine
1 China Automotive Technology & Research Center, Tianjin 300300, China
2 Jilin University, State Key Laboratory of Automotive Simulation and Control, Changchun, China
* Corresponding author: liule@catarc.ac.cn
Under transient conditions, the emission of turbocharged diesel engine will deteriorate to a certain extent, and the adoption of EGR is also a factor leading to the increase of some pollutants. For this reason, a high pressure common rail turbocharged and inter-cooled heavy duty diesel engine was used to study the influence of EGR closed-loop control method on the emission performance under typical transient conditions with constant speed and torque increasing in 5s. The results show: The NOx emission can not be effectively reduced when the air input is used as feedback parameter; When the intake oxygen concentration is used as feedback parameter, smoke emission will increase sharply; When exhaust oxygen concentration is used as feedback parameter, the smoke deterioration is less, the peak smoke is 15.8%. It has a better compromise relationship with NOx and fuel consumption, and can be used as closed-loop control parameter for diesel engine transient performance optimization.
Key words: turbocharged diesel engine / transient condition / EGR / exhaust oxygen concentration
© The Authors, published by EDP Sciences, 2021
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