Analysis of CO Emission Sources in Diesel Combustion - In-cylinder CO Imaging Using 2-photon Excitation LIF

ディーゼル燃焼のCO 排出要因解析

To analyze the carbon monoxide (CO) emission sources in diesel combustion, an in-cylinder CO imaging technique using two-photon excitation LIF was developed. While overlapping of the light emitted by the soot particles, over the weak CO fluorescence, became a serious problem, it was solved by optimizing the imaging direction, and by increasing the level of laser irradiation used for LIF excitation. The results of in-cylinder CO-LIF imaging were compared with the results obtained with CFD simulation and the agreement was found to be excellent. The results of LIF and CFD showed that the major source of CO emissions under low load conditions is the over-diffusion of the pilot sprays. These prevent the local temperature from rising, sufficiently to oxidize the CO.ディーゼル燃焼からのCO排出要因を解明するため，筒内で２光子励起CO-LIF計測技術を構築した．課題はススの発光が微弱なCOの蛍光へ重なることであり，可視化方向の最適化などで解決した．筒内CO-LIF計測により，低負荷時のCO排出の主要因はパイロット噴霧・火炎の過拡散であることを示した．

• Record URL:
  https://doi.org/10.11351/jsaeronbun.43.449
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=Analysis+of+CO+Emission+Sources+in+Diesel+Combustion+-+In-cylinder+CO+Imaging+Using+2-photon+Excitation+LIF&author=T.+Fuyuto&author=T.+Matsumoto&author=Y.+Hattori&author=R.+Ueda&author=K.+Akihama&author=H.+Aoki&author=T.+Umehara&author=H.+Ito&author=A.+Kawaguchi&publication_year=2012
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02878321
• Authors:
  • Fuyuto, Takayuki
  • Matsumoto, Takafumi
  • Hattori, Yoshiaki
  • Ueda, Reiko
  • Akihama, Kazuhiro
  • Aoki, Hideki
  • Umehara, Tsutomu
  • Ito, Hisaki
  • Kawaguchi, Akio
• Publication Date: 2012

Language

• English
• Japanese

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: pp 449-454
• Serial:
  • Transactions of Society of Automotive Engineers of Japan
  • Volume: 43
  • Issue Number: 2
  • 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: Carbon monoxide; Combustion; Compression ignition engines; Diesel engine exhaust gases; Heat engines; Image analysis; Mobile sources
• Subject Areas: Energy; Environment; Highways; Vehicles and Equipment; I15: Environment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 01528089
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Jun 12 2014 9:17AM