An investigation of the effect of fuels stratification of DME and n- butane on reducing pressure rise rate in a HCCI engine using chemiluminescence imaging

Satoshi Yamaoki, Osamu Iwama, Norimasa Iida

Research output: Contribution to journalArticle

Abstract

The purpose of this study was to gain a better understanding of the effect of fuel stratification by using chemiluminescence imaging. In order to investigate the fundamental aspects of fuel stratification, Di-methyl ether (DME) that has large heat release in LTR and n-Butane that has small heat release in LTR were used as test fuels. By using these fuels, investigations were conducted on five mixing conditions depending on DME or «-Butane and homogeneity or stratification as parameters. It is found that combustion phasing is changed by the condition of charging fuel, and maximum pressure rise rate is also changed by the condition of charging fuel. In addition, from chemiluminescence imaging, in the condition of charging fuel that achieves the lowest maximum pressure rise rate, chemiluminescence start timing is dispersed and its duration is longer.

Original languageEnglish
Pages (from-to)2677-2683
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume74
Issue number12
DOIs
Publication statusPublished - 2008 Dec

Keywords

  • Chemiluminescence
  • Combustion
  • DME
  • Gaseous fuel
  • HCCI
  • Ignition
  • Inhomogeneity
  • N-butane

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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