The heterogeneous combustion process in an HCCI engine optical characterization of fluctuations and length scales

Anders Hultqvist, Magnus Christensen, Bengt Johansson

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

The homogeneous charge compression ignition combustion process was performed using chemiluminescence imaging to characterize the flame structure and its length scales and fluctuations. A mixture of 50% n-heptane and 50% iso-octane was used as fuel. Cool flames existed at about 20 crank angles before TDC. The main heat released peaks around TDC. Throughout the combustion process the average standard deviation was below 50% of the average intensity, indicating less variation compared to the port fuel injection case. Around peak intensity, the average standard deviation was below 25% of the average intensity. The cycle-to-cycle variations were larger for the port injected case and they were largest at the start of combustion. This is an abstract of a paper presented at the IFP International Congress (11/26-27/2001, Rueil-Malmaison, France).

Original languageEnglish (US)
Title of host publicationNew Generation of Engine Combustion Processes for the Future - Proceedings of the IFP International Congress
EditorsP. Duret
Pages55-68
Number of pages14
StatePublished - Dec 1 2001
EventNew Generation of Engine combustion Processes for the Future - Proceedings of the IFP International Congress - Rueil Malmaison, France
Duration: Nov 26 2001Nov 27 2001

Publication series

NameNew Generation of Engine Combustion Processes for the Future

Other

OtherNew Generation of Engine combustion Processes for the Future - Proceedings of the IFP International Congress
CountryFrance
CityRueil Malmaison
Period11/26/0111/27/01

ASJC Scopus subject areas

  • Engineering(all)
  • Energy(all)

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