Equivalence Ratio Measurement in Fuel Rich Combustion by Laser-Induced Breakdown Spectroscopy

レーザー誘起ブレイクダウン分光法による過濃燃焼場の当量比計測

Laser-induced breakdown spectroscopy (LIBS) has been applied to measure local air-fuel ratio (equivalence ratio) in combustion. However, the research about luminous flame has not been reported. In this study, using a counterflow diffusion luminous flame (Propane-Air), LIBS spectra were observed at various measurement points with various equivalence ratios in the luminous flame (Φ<8). The equivalence ratios of those measurement points are estimated with corresponding CHEMKIN calculations. The relationship between the calculated equivalence ratios and the measured emission intensity ratios (CN₃₈₅nm/H₆₅₆nm, CN₃₈₅nm/O₇₇₇nm, H₆₅₆nm/O₇₇₇nm) are investigated. The results demonstrate that LIBS measurements of local equivalence ratio may be feasible even in the luminous flame.従来困難な輝炎を含む過濃燃焼場の当量比計測技術として，レーザー誘起ブレイクダウン分光法(LIBS)に着目した．測定対象として対向流拡散火炎を用い，種々の当量比条件 (Φ<8)におけるLIBS スペクトルを測定した．また，CHEMKIN-PRO により各火炎位置の当量比を理論計算し，スペクトル形状と当量比の関連性を調べた．

• Record URL:
  https://doi.org/10.11351/jsaeronbun.48.1185
• Record URL:
  http://scholar.google.com/scholar_lookup?title=Equivalence%20Ratio%20Measurement%20in%20Fuel%20Rich%20Combustion%20by%20Laser-Induced%20Breakdown%20Spectroscopy&author=K.%20Akihama&author=M.%20Takatsuki&author=K.%20Iwata&author=O.%20Imamura&author=H.%20Yamasaki&author=K.%20Fukui&author=T.%20Fuyuto&publication_year=2017
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02878321
• Authors:
  • Akihama, Kazuhiro
  • Takatsuki, Motohiro
  • Iwata, Kazuya
  • Imamura, Osamu
  • Yamasaki, Hiroshi
  • Fukui, Kenji
  • Fuyuto, Takayuki
• Publication Date: 2017

Language

• English
• Japanese

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 1185-1191
• Serial:
  • Transactions of Society of Automotive Engineers of Japan
  • Volume: 48
  • Issue Number: 6
  • Publisher: Society of Automotive Engineers of Japan
  • ISSN: 0287-8321
  • EISSN: 1883-0811
  • Serial URL: https://www.jstage.jst.go.jp/browse/jsaeronbun
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Combustion; Compression ignition engines; Flames; Pollutants; Ratios; Spectroscopy
• Subject Areas: Energy; Environment; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01673540
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Jun 25 2018 5:18PM