Numerical analysis of autoignition and combustion of n-butane and air mixture in homogeneous-charge compression-ignition engine using elementary reactions

Yudai Yamasaki, Norimasa Iida

Research output: Contribution to journalArticle

9 Citations (Scopus)


The present study focuses on clarifying the combustion mechanism of the homogeneous-charge compression-ignition (HCCI) engine in order to control ignition and combustion as well as to reduce HC and CO emissions and to maintain high combustion efficiency by calculating the chemical kinetics of elementary reactions. For the calculations, n-butane was selected as fuel since it is a fuel with the smallest carbon number in the alkane family that shows two-stage autoignition (heat release with low- temperature reaction (LTR) and with high-temperature reaction (HTR) similarly to higher hydrocarbons such as gasoline. The CHEMKIN code was used for the calculations assuming zero dimensions in the combustion chamber and adiabatic change. The results reveal the heat release mechanism of the LTR and HTR, the control factor of ignition timing and combustion speed, and the condition need to reduce HC and CO emissions and to maintain high combustion efficiency.

Original languageEnglish
Pages (from-to)52-59
Number of pages8
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Issue number1
Publication statusPublished - 2003 Feb 1



  • Calculation
  • Chemical reaction
  • Combustion
  • HCCI
  • Internal combustion engine
  • N-butane

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

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