Influences of Turbulence Scale on Development of Spherically Propagating Flame under High EGR Conditions

Yukihide Nagano, Toshiaki Kitagawa, Atsushi Ohta, Shiro Takakura, Yutaka Tajima, Nobu Takahashi

研究成果: ジャーナルへの寄稿Conference article

抄録

EGR (Exhaust gas recirculation) can reduce the pumping loss and improve the thermal efficiency of spark ignition engines. The techniques for combustion enhancement under high EGR rate condition has been required for further improvement of the thermal efficiency. In order to develop the technique of combustion enhancement by turbulence, the influences of turbulence scale on combustion properties, such as probability of flame propagation, EGR limit of flame propagation, flame quenching and combustion duration were investigated under the condition of same turbulence intensity. Experiments were carried out for stoichiometric spherically propagating turbulent i-C8H18/Air/N2 flames using a constant volume vessel. It was clarified that all of these combustion properties were affected by the turbulence scale. The development of spherically propagating turbulent flame during flame propagation was affected by the turbulence scale. As the size of flame becomes larger, the scales of turbulent eddies effective to turbulent burning velocity may vary.

元の言語英語
ジャーナルSAE Technical Papers
2015-September
発行部数September
DOI
出版物ステータス出版済み - 9 1 2015
イベントJSAE/SAE 2015 International Powertrains, Fuels and Lubricants Meeting, FFL 2015 - Kyoto, 日本
継続期間: 9 1 20159 4 2015

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Exhaust gas recirculation
Turbulence
Internal combustion engines
Quenching
Air

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

これを引用

Influences of Turbulence Scale on Development of Spherically Propagating Flame under High EGR Conditions. / Nagano, Yukihide; Kitagawa, Toshiaki; Ohta, Atsushi; Takakura, Shiro; Tajima, Yutaka; Takahashi, Nobu.

:: SAE Technical Papers, 巻 2015-September, 番号 September, 01.09.2015.

研究成果: ジャーナルへの寄稿Conference article

Nagano, Yukihide ; Kitagawa, Toshiaki ; Ohta, Atsushi ; Takakura, Shiro ; Tajima, Yutaka ; Takahashi, Nobu. / Influences of Turbulence Scale on Development of Spherically Propagating Flame under High EGR Conditions. :: SAE Technical Papers. 2015 ; 巻 2015-September, 番号 September.
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