The Influence of Different Frequencies in the Turbulence on Early Flame Development in a Spark Ignition Engine

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding


Two-components cycle-resolved Laser Doppler
Velocimetry (LDV) measurements were performed with
high data rate to resolve the flow in a spark ignition
engine. The velocity measurements were then processed
with both a frequency and a time domain filtering
technique to obtain the level of turbulence at different
frequencies. Simultaneous cylinder pressure
measurements gave information of the duration of the
early flame development through a heat release
calculation. The initial combustion rate was correlated to
the turbulence at different frequencies and the results
showed a higher correlation for the high frequencies (4-6
kHz) when the engine was run at 700 rpm.


  • Bengt Johansson
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Other Mechanical Engineering


  • Spectrum, Spark Ignition, Turbulence, Combustion Engine, Cycle-Cycle variation
Original languageEnglish
Title of host publicationSAE Technical Paper Series
PublisherSociety of Automotive Engineers
Publication statusPublished - 1994
Publication categoryResearch
EventSAE International Congress and Exposition, 1993 - Detroit, Michigan, United States
Duration: 1993 Feb 281993 Mar 3

Publication series

ISSN (Print)0148-7191


ConferenceSAE International Congress and Exposition, 1993
CountryUnited States
CityDetroit, Michigan