A Study on Hydrogen Jet Configuration and Flame Propagation by Shadowgraphic Visualization in High Pressure Direct Injection Hydrogen Engines

レーザシャドウグラフ法を用いた可視化による直噴水素エンジンの燃焼特性解明研究

A new ignition-combustion concept named PCC (Plume Ignition Combustion Concept) is proposed by the authors in order to reduce NOx formation under high engine output operating conditions minimizing tradeoffs on output power and thermal efficiency. In this study a laser shadowgraphic visualization of propagating flame and jet in the combustion chamber was applied to understand the condition and behavior of the hydrogen jet which affects NOx formation and thermal efficiency. As a result, understandings such that distorted geometry of propagating flame indicates low entrainment of air to hydrogen jet, resulted in low NOx formation but low thermal efficiency. Increased cooling loss caused by impingement of propagating flame to piston wall is another factor obtained by visualization of propagating flame.直噴水素エンジンの希薄混合気運転（λ＝1.5近傍）域において，過濃混合気塊の燃焼により高負荷時のNOx生成を低減するPCC(Plume Ignition Combustion Concept)燃焼を報告してきた．本研究では噴流形状や火炎伝ぱを可視化しPCC燃焼の低NOx特性と熱効率を両立させる火炎伝ぱ特性を明らかにした．

• Record URL:
  • https://doi.org/10.11351/jsaeronbun.43.1209
• Record URL:
  • http://scholar.google.com/scholar_lookup?title=A%20Study%20on%20Hydrogen%20Jet%20Configuration%20and%20Flame%20Propagation%20by%20Shadowgraphic%20Visualization%20in%20High%20Pressure%20Direct%20Injection%20Hydrogen%20Engines&author=K.%20Kanan%20Sekine&author=M.%20Oikawa&author=Y.%20Kondo&author=Y.%20Takagi&author=Y.%20Sato&publication_year=2012
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02878321
• Authors:
  • Sekine, Kanan
  • Oikawa, Masakuni
  • Kondo, Yoshikazu
  • Takagi, Yasuo
  • Sato, Yoshio
• Publication Date: 2012-11

Language

• English
• Japanese

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 1209-1214
• Serial:
  • Transactions of Society of Automotive Engineers of Japan
  • Volume: 43
  • 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; Exhaust gases; Flame propagation; Heat engines; Hydrogen fuels; Nitrogen oxides; Spark ignition engines; Thermal efficiency; Visualization
• Uncontrolled Terms: High pressure direct injection
• Subject Areas: Energy; Environment; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01673520
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Jun 25 2018 1:49PM