正戊醇/汽油层流扩散火焰碳烟生成动力学

Translated title of the contribution: Soot Formation and Kinetics Study on Laminar Diffusion Flames of n-Pentanol/Gasoline Blends

Yang Hua, Fushui Liu, Han Wu, Xu He, Chiafon Lee

Research output: Contribution to journalArticle

Abstract

Two-dimensional soot concentration distribution in the n-pentanol/gasoline laminar diffusion flames were measured by TC-LII technique. The effect of n-pentanol blending ratio on soot formation was investigated. The semidetailed pentanol-TRF-PAH mechanism was constructed, and the pathways and sensitivity of soot precursors were analyzed with CHEMKIN 0-D constant pressure reactor. The results show that the n-pentanol addition can significantly inhibit the soot formation. The soot concentration decrease linearly with the increasing of n-pentanol ratio. Compared with pure gasoline, the peak soot of P20, P40, P60 and P80 decreases by 21.4%,, 45.3%,, 64.9%, and 84.5%, respectively. The kinetic analysis shows that the mole fraction of A1-A4 decreases with the increasing of n-pentanol content. The n-pentanol addition does not change the main production and consumption pathways of A1. For the P100, A1 is generated by the reactions of C 3 +C 3 and C 4 +C 2 , and the rate of Al formation is much smaller than that of toluene containing fuel(P0-P80). The reduction of soot by n-pentanol addition is mainly due to the dilution effect of aromatics. In addition, the A1 formation process was controlled by the chemical reaction processes of HO 2 , OH, CH 3 and H. The sensitivity of desensitization of H 2 O 2 and HO 2 is enhanced.

Translated title of the contributionSoot Formation and Kinetics Study on Laminar Diffusion Flames of n-Pentanol/Gasoline Blends
Original languageChinese
Pages (from-to)422-430
Number of pages9
JournalNeiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines)
Volume36
Issue number5
DOIs
StatePublished - Sep 25 2018

Keywords

  • Chemical kinetics
  • Gasoline
  • Laminar diffusion flame
  • N-pentanol
  • Soot formation

ASJC Scopus subject areas

  • Automotive Engineering
  • Mechanical Engineering

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