Analysis of the effect of charge inhomogeneity of fuel distribution on the ignition and combustion in HCCI Engine by chemiluminescence measurement

Kengo Kumano, Yudai Yamasaki, Norimasa Iida

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In HCCI Engine, inhomogeneity of fuel distribution and temperature in pre-mixture microscopically exists and has possibility to affect the ignition and combustion process. In this study, the effect of charge inhomogeneity of fuel distribution on the HCCI combustion process was investigated. Pressure profiles were measured and two dimensional chemiluminescence images were captured by using a framing camera with a 4-stroke optical access engine. DME was used as the test fuel. Changing the way of mixing air and fuel in the intake manifold, inhomogeneity of fuel distribution in the pre-mixture was varied. The result showed that luminescence started and stopped at the same instant in whole the combustion chamber on the homogeneous condition. On the other hand, on the inhomogeneous condition luminescence started with a spatial variation in the combustion chamber. However local luminescence duration was almost the same on both conditions. It is clarified that a time lag appears spatially in combustion in the chamber on the inhomogeneous condition.

Original languageEnglish
Pages (from-to)295-302
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume71
Issue number701
DOIs
Publication statusPublished - 2005 Jan

Keywords

  • Chemiluminescence
  • Di-Methyl Ether
  • HCCI Engine
  • Homogeneity
  • Internal Combustion Engine
  • Premixed Combustion
  • Radical

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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