The investigation about the effects of thermal stratification in combustion chamber on HCCI combustion fueled with DME/n-Butane using Rapid Compression Machine

Ock Taeck Lim, Norimasa Iida

Research output: Contribution to journalArticle

17 Citations (Scopus)


The HCCI combustion mode poses its own set of narrow engine operating by knocking. In order to solve this, inhomogeneity method of mixture and temperature is suggested. The purpose of this research is to get fundamental knowledge about the effect of thermal stratification on HCCI combustion of DME/. n-Butane-air mixture. The temperature stratification is made by buoyancy effect in combustion chamber of RCM. The analysis items are pressure, temperature of in-cylinder gas and combustion duration. In addition, the structure of flames using the two dimensional chemiluminescence's images by a framing camera are analyzed. Under stratification, the LTR starting time and the HTR starting time are advanced than that of homogeneous. Further, the LTR period of homogeneous conditions became shorter than that of the stratified conditions. With the case of homogeneous condition, the luminosity duration becomes shorter than the case of stratified condition. Additionally, under stratified condition, the brightest luminosity intensity is delayed longer than at homogeneous condition.

Original languageEnglish
Pages (from-to)123-133
Number of pages11
JournalExperimental Thermal and Fluid Science
Publication statusPublished - 2012 May 1



  • Homogeneous Charge Compression Ignition (HCCI)
  • Internal combustion engine
  • Rapid Compression Machine
  • Thermal stratification

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Nuclear Energy and Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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