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  • Summary & Details

Alcohol Diffusive Combustion Technique as an Alternative Diesel Combustion (Third Report)

ディーゼル代替アルコール拡散燃焼技術(第3報)

Detailed Information

Category(J)論文

Translation

Category(E)Paper
Author(J)1) 脇坂 佳史, 2) 福井 健二, 3) 近藤 照明, 4) 政所 良行, 5) 西川 一明, 6) 冬頭 孝之, 7) 伊達 健治, 8) 植田 祐介, 9) 菅原 里志
Author(E)1) Yoshifumi Wakisaka, 2) Kenji Fukui, 3) Teruaki Kondo, 4) Yoshiyuki Mandokoro, 5) Kazuaki Nishikawa, 6) Takayuki Fuyuto, 7) Kenji Date, 8) Yusuke Ueda, 9) Satoshi Sugawara
Affiliation(J)1) 株式会社豊田中央研究所, 2) 株式会社豊田中央研究所, 3) 株式会社豊田中央研究所, 4) 株式会社豊田中央研究所, 5) 株式会社豊田中央研究所, 6) 株式会社豊田中央研究所, 7) 株式会社デンソー, 8) 株式会社デンソー, 9) 株式会社デンソー
Abstract(J)代替燃料として期待されるアルコールをディーゼルと同様に拡散燃焼させるため,着火源としての軽油と主燃料のエタノールを同一噴孔から噴射する2燃料噴射弁を試作した.エタノール割合が高い主噴射を着火させるため軽油割合が高いパイロット噴射を行う.本研究ではパイロット噴射要件を筒内観察と単気筒エンジン試験で特定した.

Translation

Abstract(E)In this study, we prototyped a dual-fuel high-pressure pump and a dual-fuel injector that controls two fuels using a single needle valve and injects them through the same nozzle orifice. In-cylinder observations revealed that a pilot injection with a high diesel fuel content ignites the main injection of an ethanol–diesel mixture, thereby achieving diffusive combustion. Experiments were conducted at engine speeds of 1000 and 2000 rpm under low-load conditions, with coolant temperatures of 80 °C and 40 °C. The optimum pilot injection timing and quantity were experimentally determined using a single-cylinder direct-injection diesel engine, with the objective of minimizing combustion noise, smoke, and CO emissions.

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