Development of a reduced chemical kinetic mechanism and ignition delay measurement in a rapid compression machine for CAI combustion

Yongrae Kim, Kyoungdoug Min*, Min Soo Kim, Suk Ho Chung, Choongsik Bae

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

8 Scopus citations

Abstract

A reduced chemical kinetic mechanism for a gasoline surrogate was developed and validated in this study for CAI (Controlled Auto Ignition) combustion. The gasoline surrogate was modeled as a blend of iso-octane, n-heptane, and toluene. This reduced mechanism consisted of 44 species and 59 reactions, including main reaction paths of iso-octane, n-heptane, and toluene. The ignition delay times calculated from this mechanism showed a good agreement with previous experimental data from shock tube measurement. A rapid compression machine (RCM) was developed and used to measure the ignition delay times of gasoline and surrogate fuels in the temperature range of 890K ∼ 1000K. The RCM experimental results were also compared with the RCM simulation using the reduced mechanism. It was found that the chemical reaction started before the end of the compression process in the RCM experiment. And the ignition delay time of the suggested gasoline surrogate was similar to that of gasoline. Finally an engine experiment on CAI combustion was performed by using a single cylinder research engine. A simple, 0-D engine simulation was conducted using the reduced mechanism, which was then compared with the engine experimental data.

Original languageEnglish (US)
DOIs
StatePublished - Dec 1 2007
Event2007 World Congress - Detroit, MI, United States
Duration: Apr 16 2007Apr 19 2007

Other

Other2007 World Congress
CountryUnited States
CityDetroit, MI
Period04/16/0704/19/07

ASJC Scopus subject areas

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

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