Analysis and control of cyclic dispersion in an HCCI engine

Kenichiro Nagai, Chao Shi, Norimasa Iida

Research output: Contribution to journalArticlepeer-review


Homogeneous Charge Compression Ignition (HCCI) engine has the potential to achieve lower NOx and PM emissions with high thermal efficiency. Although it has these merits, operation region is still limited by knocking. Combustion phasing retard is one of the methods to avoid knocking. However, excessive retard of CA50 will lead to unstable combustion. In this study, we developed a combustion control system for HCCI engine fuelled with DME. The cyclic dispersion mechanism on the excessive retard of CA50 was analyzed. And the controlling road map for reducing combustion variations was obtained. Based on these results, reduction of cyclic dispersion is realized by combustion control.

Original languageEnglish
Pages (from-to)691-698
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number764
Publication statusPublished - 2010 Apr
Externally publishedYes


  • Alternative energy
  • Cyclic dispersion
  • DME
  • EGR
  • Hcci engine
  • Internal combustion engine
  • Premixed combustion

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering


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