Emissions reduction effects of diesel combustion with low compression and high expansion ratios

Yutaka Murata, Jin Kusaka, Yasuhiro Daisho, Daisuke Kawano, Hisakazu Suzuki, Hajime Ishii, Yuichi Goto

研究成果: Article査読

抄録

For suppressing NOx and smoke simultaneously, an alternative diesel combustion strategy is required to avoid local over-rich regions in the mixtures at EGR conditions. In the present study, a variable valve timing (VVT) mechanism is applied in a light duty HSDI diesel engine. By means of lowering effective compression ratios, compressed gas temperatures near the top dead center are lowered, thereby preventing too early ignition and increasing ignition delay to enhance fuel-air mixing. At the same time, the expansion ratio is kept constant to ensure thermal efficiency. It is recognized that the optimum control of EGR and effective compression ratios can simultaneously reduce NOx and smoke.

本文言語English
ページ(範囲)1442-1447
ページ数6
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
73
7
DOI
出版ステータスPublished - 2007 7
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 機械工学

フィンガープリント

「Emissions reduction effects of diesel combustion with low compression and high expansion ratios」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル