| Issue |
E3S Web Conf.
Volume 360, 2022
2022 8th International Symposium on Vehicle Emission Supervision and Environment Protection (VESEP2022)
|
|
|---|---|---|
| Article Number | 01023 | |
| Number of page(s) | 13 | |
| DOI | https://doi.org/10.1051/e3sconf/202236001023 | |
| Published online | 23 November 2022 | |
Simulation study on the influence of fuel injection strategy on the soot emission of dual-injection engine
1 China Automotive Technology and Research Center Co., Ltd., Tianjin 300300, China
2 State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
3 Vehicle Emission Control Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
4 CSSC Power (Group) CO., LTD. Beijing 100097, China
5 Tianjin University, Tianjin 300000, China
* Corresponding author: zhaohg@vecc.org.cn
A 2.0T gasoline engine was modified to a dual-injection engine. Numerical simulation method is used to study the influence of fuel type and fuel injection strategy on the in-cylinder mixture formation process, combustion process and soot emission of dual-injection gasoline engine. The simulation results show that an appropriate increase in the intake port fuel injection ratio can improve the uniformity of the air-fuel mixture. Increasing the fuel injection ratio in the intake port of the dual-injection system, the proportion of fuel directly injected into the cylinder decreases and the oil film distribution in the cylinder is reduced. Among the three injection schemes, the flame front of the D85 injection scheme reaches the cylinder wall earliest, and the flame spreads faster; the soot mass fraction generation decreases with the decrease of the GDI injection ratio. In particular, the amount of soot generated under the D65GDI injection ratio is significantly reduced.
Key words: Gasoline engine / Numerical simulation / Dual injection / Soot emission
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
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