| Issue |
E3S Web Conf.
Volume 360, 2022
2022 8th International Symposium on Vehicle Emission Supervision and Environment Protection (VESEP2022)
|
|
|---|---|---|
| Article Number | 01015 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1051/e3sconf/202236001015 | |
| Published online | 23 November 2022 | |
Analysis and experimental research on the influence of VVT point selection on exhaust temperature in low speed operating conditions
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 Geely Automobile Research Institute (Ningbo) Co., Ltd, Ningbo 315336, China
* Corresponding author: zhaohg@vecc.org.cn
During the development of a model equipped with dual VVT engines, a higher temperature of the catalyst was discovered. Therefore, the sweep point of VVT is optimized under low speed and high load conditions. The test results show that VVT has a significant effect on the temperature of the catalytic converter, and the temperature of the catalytic converter has decreased after optimization. At the same time, the VVT opening has little effect on the dynamics. In addition, VVT has an effect on the knocking tendency of the engine. When the knocking tendency increases, the temperature of catalytic converter and power performance of the engine are deteriorated. On the contrary, if the ignition angle can be advanced, the performance of the engine can be optimized.
Key words: VVT / Temperature / Ignition angle / Power performance
© The Authors, published by EDP Sciences, 2022
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