Construction of Chemical Kinetics Mechanism of Aldehydes Unregulated Pollutants from Diesel Engines

被引：0
|
作者：
Zhang W. [1 ]
Pang C. [1 ]
Chen Z. [1 ]
Bi K. [2 ]
机构：
[1] Yunnan Key Laboratory of Internal Combustion Engine, Kunming University of Science and Technology, Kunming
[2] Kunming City Energy Saving Supervision Detachment, Kunming
来源：
Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines) | 2024年 / 42卷 / 02期
关键词：
aldehydes; chemical kinetics; diesel engine; unregulated pollutants;
D O I：
10.16236/j.cnki.nrjxb.202402015
中图分类号：
学科分类号：
摘要：
Based on combustion mechanisms of five fuels with different properties，the reaction path analysis method was used to analyze the generation of formaldehyde and acetaldehyde from a diesel engine. A chemical kinetics mechanism of aldehydes unregulated pollutants(aldehydes mechanism) containing 43 species and 63 reactions was constructed，and the predicted value of this mechanism was compared with the experimental value. The results show that the mechanism can not only predict the ignition delay time，the laminar flame speed and the generation of important species in a wide range of equivalence ratio，but also accurately predict the emissions of formaldehyde and acetaldehyde in the diesel engine. The emissions of formaldehyde and acetaldehyde can be effectively reduced by increasing the intake temperature and pressure，advancing the injection time，and shortening the injection duration. However，increasing exhaust gas recirculation(EGR) rate will lead to a significant increase in both emissions. Among them，the most influential factor on formaldehyde emissions is the injection advance angle，and EGR rate is the most influential factor on acetaldehyde emissions. © 2024 Chinese Society for Internal Combustion Engines. All rights reserved.
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页码：124 / 133
页数：9
相关论文
共 28 条
  • [1] Li Z L, Cui X F., Et al., Effects of the variation in diesel fuel components on the particulate matter and unregulated gaseous emissions from a common rail diesel engine[J], Fuel, 232, pp. 279-289, (2018)
  • [2] Tian J L，, Tan J W，, Hu N T，, Et al., Characteristics analysis for total volatile organic compounds emissions of methanol-diesel fuel[J], Journal of the Energy Institute, 91, 4, pp. 527-533, (2018)
  • [3] 36, 5, pp. 401-407, (2018)
  • [4] Yang W D，, Zhang Q Y，, Wang J L，, Et al., Emission characteristics and ozone formation potentials of VOCs from gasoline passenger cars at different driving modes[J], Atmospheric Pollution Research, 9, 5, pp. 804-813, (2018)
  • [5] 39, 2, pp. 542-553, (2019)
  • [6] 41, 7, pp. 3131-3137
  • [7] 40, 7
  • [8] 32, 1, pp. 6-13, (2014)
  • [9] Tang Q L，, Liu H F，, Ran X W，, Et al., Effects of direct-injection fuel types and proportion on late-injection reactivity controlled compression ignition[J], Combustion and Flame, 211, pp. 445-455, (2020)
  • [10] Wei H Y, Dou Z C., Comparison of the conversion efficiency of DOC and DPOC to unregulated emissions from a DMDF engine[J], Fuel, 204, pp. 71-84, (2017)
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