A study on NO reduction mechanism caused by thermal cracking hydrocarbons during rich diesel combustion

Hirofumi Noge; Yoshiyuki Kidoguchi; Kei Miwa

doi:10.1299/kikaib.71.2193

A study on NO reduction mechanism caused by thermal cracking hydrocarbons during rich diesel combustion

Hirofumi Noge, Yoshiyuki Kidoguchi, Kei Miwa

Research output: Contribution to journal › Article › peer-review

Abstract

This study tries to investigate the reduction of nitric oxide by thermally cracked hydrocarbons under rich condition during diesel combustion. Experiments using flow reactor system, which follows the chemical process of fuel at high temperature and atmospheric pressure, show that thermal cracking of fuel starts at about 1 000 K, and lower hydrocarbons mainly composed of C₂H ₄ and CH₄ are formed. NO can be reduced when fuel is thermally cracked and oxidized. A larger amount of NO is reduced when thermal cracking hydrocarbons are increased in quantity under rich and high temperature condition. Among decomposed hydrocarbons, C₂H₄ is easily decomposed and affects deNO mechanism. Chemical kinetic calculation using CHEMKIN III reveals the mechanism. NO is reduced through the reaction of HCCO or CH₂ with NO. In these reaction paths, C₂H₂ is an essential species. The computation also shows that this deNO mechanism can be actualized in the practical diesel combustion.

Original language	English
Pages (from-to)	2193-2199
Number of pages	7
Journal	Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume	71
Issue number	708
DOIs	https://doi.org/10.1299/kikaib.71.2193
Publication status	Published - Aug 2005
Externally published	Yes

Keywords

Chemical Reaction
Combustion
Combustion Products
Diesel Fuel
Hydrocarbon
NO
Thermal Cracking

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering

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A study on NO reduction mechanism caused by thermal cracking hydrocarbons during rich diesel combustion. / Noge, Hirofumi; Kidoguchi, Yoshiyuki; Miwa, Kei.

In: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 71, No. 708, 08.2005, p. 2193-2199.

Research output: Contribution to journal › Article › peer-review

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abstract = "This study tries to investigate the reduction of nitric oxide by thermally cracked hydrocarbons under rich condition during diesel combustion. Experiments using flow reactor system, which follows the chemical process of fuel at high temperature and atmospheric pressure, show that thermal cracking of fuel starts at about 1 000 K, and lower hydrocarbons mainly composed of C2H 4 and CH4 are formed. NO can be reduced when fuel is thermally cracked and oxidized. A larger amount of NO is reduced when thermal cracking hydrocarbons are increased in quantity under rich and high temperature condition. Among decomposed hydrocarbons, C2H4 is easily decomposed and affects deNO mechanism. Chemical kinetic calculation using CHEMKIN III reveals the mechanism. NO is reduced through the reaction of HCCO or CH2 with NO. In these reaction paths, C2H2 is an essential species. The computation also shows that this deNO mechanism can be actualized in the practical diesel combustion.",

keywords = "Chemical Reaction, Combustion, Combustion Products, Diesel Fuel, Hydrocarbon, NO, Thermal Cracking",

author = "Hirofumi Noge and Yoshiyuki Kidoguchi and Kei Miwa",

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AU - Miwa, Kei

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N2 - This study tries to investigate the reduction of nitric oxide by thermally cracked hydrocarbons under rich condition during diesel combustion. Experiments using flow reactor system, which follows the chemical process of fuel at high temperature and atmospheric pressure, show that thermal cracking of fuel starts at about 1 000 K, and lower hydrocarbons mainly composed of C2H 4 and CH4 are formed. NO can be reduced when fuel is thermally cracked and oxidized. A larger amount of NO is reduced when thermal cracking hydrocarbons are increased in quantity under rich and high temperature condition. Among decomposed hydrocarbons, C2H4 is easily decomposed and affects deNO mechanism. Chemical kinetic calculation using CHEMKIN III reveals the mechanism. NO is reduced through the reaction of HCCO or CH2 with NO. In these reaction paths, C2H2 is an essential species. The computation also shows that this deNO mechanism can be actualized in the practical diesel combustion.

AB - This study tries to investigate the reduction of nitric oxide by thermally cracked hydrocarbons under rich condition during diesel combustion. Experiments using flow reactor system, which follows the chemical process of fuel at high temperature and atmospheric pressure, show that thermal cracking of fuel starts at about 1 000 K, and lower hydrocarbons mainly composed of C2H 4 and CH4 are formed. NO can be reduced when fuel is thermally cracked and oxidized. A larger amount of NO is reduced when thermal cracking hydrocarbons are increased in quantity under rich and high temperature condition. Among decomposed hydrocarbons, C2H4 is easily decomposed and affects deNO mechanism. Chemical kinetic calculation using CHEMKIN III reveals the mechanism. NO is reduced through the reaction of HCCO or CH2 with NO. In these reaction paths, C2H2 is an essential species. The computation also shows that this deNO mechanism can be actualized in the practical diesel combustion.

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