Combustion analysis of methanol-fueled ATAC engine by spectroscopic observation

Norimasa Iida, Susumu Kubo, Yukiteru Yoshida, Kazuhiro Kidoguchi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


To analyze the combustion mechanism of the so-called ATAC (active thermo-atmosphere combustion) in a two-stroke S.I. engine, the measuring system to get an image of radical luminescence in the combustion chamber was developed. The ATAC engine tested was equipped with a quartz window at the cylinder head. The instantaneous luminescence image from radical species was observed using an image intensifier with a band pass filter for both conventional combustion and ATAC operation conditions. Before starting heat release, emissions from OH radicals were observed, and after that, emissions from CH were observed. It was found that the ignition was initiated over the ennre area of the combustion chamber and that “bulk”-like and/or “non propagate” combustion occurred during ATAC engine operation.

Original languageEnglish
Pages (from-to)4014-4021
Number of pages8
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Issue number568
Publication statusPublished - 1993


  • ATAC Engine
  • Combustion
  • Gasoline
  • Ignition
  • Internal Combustion Engine
  • Methanol
  • Radical Luminescence
  • Spectroscopic Observation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering


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