Study on Expansion of EGR Limitation of a Spark Ignition Direct Injection Engine by Ignition Systems

点火系による直噴ガソリンエンジンのEGR 限界拡大に関する研究

New combustion strategies with EGR are recently applied for the purpose of not only reducing pumping loss but also improving anti-knocking and compression ratio in gasoline engines. This paper describes effects of ignition coil specifications (current, duration and energy) on combustion performance of a spark ignition engine. To clarify better parameters’ settings which affect stoichometric combustion with EGR, a robust design, named Taguchi Methods was used as a sensitivity analysis. With suitable parameters selected, combustion stability under higher EGR was investigated to determine requirements of ignition specifications for new combustion strategies. The results showed that multiple-ignition contributes to improve the limitation of EGR rate.近年,ガソリンエンジンのポンプ損失低減だけでなく,ノック抑制や高圧縮比化を目的として,EGR を導入した新しい燃焼方式が適用されている.本論文では,点火コイル仕様がガソリンエンジンの燃焼性能に及ぼす影響を詳細に述べる.実験結果からは,マルチ点火により,EGR燃焼限界が拡大する効果が示された.

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  • English
  • Japanese

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Filing Info

  • Accession Number: 01667044
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Apr 25 2018 9:23AM