Lean burn method

Japanese: 希薄燃焼方式 - きはくねんしょうほうしき
Lean burn method

…At this time, the combustion is improved so as not to cause a drop in power or an increase in HC, while the recirculation amount is controlled to be appropriate according to the engine load and revolutions. (c) Adoption of stratified charge or lean burn method If a lean mixture can be burned stably, the three components can be reduced. Therefore, a pre-chamber is provided in the combustion chamber, a rich mixture is supplied to the pre-chamber and ignited, and the lean mixture in the main chamber is burned by the flame ejected from the pre-chamber. …

*Some of the terminology used in reference to the "lean burn method" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…このとき出力の低下やHCの増加などをきたさないよう燃焼の改善をはかる一方,エンジンの負荷・回転数に応じて適当な再循環量になるよう制御される。(c)成層給気または希薄燃焼方式の採用 希薄混合気を安定して燃焼できれば3成分を低減できる。そこで,燃焼室に副室を設け,副室に濃い混合気を供給して点火し,副室から噴き出る火炎により主室の希薄混合気を燃焼させる。…

※「希薄燃焼方式」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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