Analysis of Combustion Characteristics and Lean Limit of a Supercharged Lean Burn Gasoline engine

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  • 過給リーンバーンガソリン機関の希薄限界における燃焼解析
  • カキュウリーンバーンガソリン キカン ノ キハク ゲンカイ ニ オケル ネンショウ カイセキ

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To investigate the combustion characteristics and lean limit of a supercharged lean burn gasoline engine, combustion analysis based on in-cylinder pressure measurement and high speed photography of flame propagation and knocking were conducted under the boosted lean burn condition. Using the single cylinder test engine based on a production four-cylinder engine, a lean burn operation with an equivalence ratio of 0.6 at intake pressure of 200 kPa was realized. The effect of equivalence ratio on combustion stability, knocking and energy balance was investigated.

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