Thermal efficiency improvement of a lean-boosted spark ignition engine by multidimensional simulation with detailed chemical kinetics

Sok Ratnak, Jin Kusaka, Yasuhiro Daisho, Kei Yoshimura, Kenjiro Nakama

研究成果: Article査読

6 被引用数 (Scopus)

抄録

This paper aims to improve thermal efficiency of spark ignition engine by numerical calculation with detailed chemistry. Experimental results from a four-stroke-single-cylinder engine are compared with that of simulations. It is experimentally found that peak efficiency is achieved at lean-limit combustion under excess air ratio λ=1.6. Due to engine output power loss, further investigations are conducted under lean-boost operations. The best condition of the lean-boost mode is at λ=1.3 and 150 kPa boosted pressure (abs). To further improve the efficiency without power loss, simulations are conducted under lean-boost combustion with dilution rate, high engine swirl, and high knock resistant fuel.

本文言語English
ページ(範囲)97-104
ページ数8
ジャーナルInternational Journal of Automotive Engineering
6
4
DOI
出版ステータスPublished - 2015

ASJC Scopus subject areas

  • 人的要因と人間工学
  • 自動車工学
  • 安全性、リスク、信頼性、品質管理
  • 流体および伝熱

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