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  • Summary & Details

Development of High Thermal Efficiency PFI Lean-Burn Engine (1st report)

高効率PFIリーンバーンエンジンの開発(第1報)

Detailed Information

Author(J)1) 渡邉 和成, 2) 永野 幸秀, 3) 正月 宏明, 4) 奥井 和仁, 5) 佐田 景一, 6) 草場 耕佑, 7) 櫻木 章樹, 8) 島 祐太, 9) 内藤 一哉, 10) 江原 達哉
Author(E)1) Kazunari Watanabe, 2) Yukihide Nagano, 3) Hiroaki Masatsuki, 4) Kazuhito Okui, 5) Keiichi Sata, 6) Kosuke Kusaba, 7) Akishige Sakuragi, 8) Yuta Shima, 9) Kazuya Naito, 10) Tatsuya Ehara
Affiliation(J)1) ダイハツ工業, 2) ダイハツ工業, 3) ダイハツ工業, 4) ダイハツ工業, 5) ダイハツ工業, 6) ダイハツ工業, 7) ダイハツ工業, 8) ダイハツ工業, 9) ダイハツ工業, 10) ダイハツ工業
Affiliation(E)1) Daihatsu Motor, 2) Daihatsu Motor, 3) Daihatsu Motor, 4) Daihatsu Motor, 5) Daihatsu Motor, 6) Daihatsu Motor, 7) Daihatsu Motor, 8) Daihatsu Motor, 9) Daihatsu Motor, 10) Daihatsu Motor
Abstract(J)CN貢献に向け,コンパクトカー用の良品廉価なPFIリーンバーン(λ≥2)ガソリンエンジンの開発を進めている.燃焼室形状の設計検討等により筒内流動を改善し安定した高速燃焼を実現したことで,最大でλ=3付近まで運転可能となった.中-低速回転数の広範囲において図示熱効率45%以上,低NOx排出を達成した.

Translation

Abstract(E)We have been developing a high-quality, affordably priced port fuel-injection (PFI) lean-burn gasoline engine for compact vehicles (λ ≥ 2). Modifications to the combustion-chamber geometry improved in-cylinder flow, enhancing flame speed and combustion stability, and extending the lean limit to λ = 3. In the low-to-mid engine speed range, the engine achieved indicated thermal efficiency exceeding 45% and low NOx emissions.

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