Homogeneous charge compression ignition combustion with dimethyl ether - Spectrum analysis of chemiluminescence

Nobuyuki Kawahara, Eiji Tomita, Hisashi Kagajyo

Research output: Contribution to journalConference articlepeer-review

10 Citations (Scopus)


Homogeneous Charge Compression Ignition (HCCI) combustion with dimethyl ether has been carried out in a single cylinder engine with a transparent piston. The engine was operated at 800 rpm with a wide-open throttle. The intake-premixed mixture was preheated with an electric heater to promote auto-ignition. HCCI combustion with dimethyl ether indicates multi-stage heat releases. Investigations were conducted with visualization of combustion in the cylinder and detailed and temporal spectroscopic measurements using spectrometer. In order to understand reaction mechanism of auto-ignition and combustion mechanism in HCCI engine, spectrum analysis of chemiluminescence was carried out. Three main conclusions were drawn from this study. (1) Spectrum from chemiluminescence at low temperature oxidation was obtained successfully using developed optical fiber probe. (2) Emitting lights from HCHO according to Emeléous's cool flame bands appear at low temperature reaction. (3) During the main heat release, the CO-O recombination spectrum was strong. There was a strong correlation between rate of heat release and the CO-O recombination spectrum.

Original languageEnglish
JournalSAE Technical Papers
Publication statusPublished - Jan 1 2003
Event2003 JSAE/SAE International Spring Fuels and Lubricants Meeting - Yokohama, Japan
Duration: May 19 2003May 22 2003

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


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