Correlation between cycle-resolved 2-D velocity measurements and early combustion in a spark ignition engine

Bengt Johansson*

*Corresponding author for this work

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

1 Scopus citations

Abstract

The objective of this paper is to investigate how the low and high frequency parts of the flow at different locations close to the spark plug influence the early combustion at individual cycles in a SI-engine. 2-components cycle-resolved laser doppler velocimetry (LDV) measurements have been done both inside the spark gap and around the spark tip to extract velocity information. The pressure in the cylinder was measured with a piezo-electric transducer connected to an A/D-card in a standard PC. The velocity information was filtered to get `mean velocity' and `turbulence'. The pressure signal was used in an one-zone heat-release model to get different levels of mass fraction burned etc. The results show a significant correlation between the velocity and the early combustion when the velocity was measured close to the spark plug tip. The correlation decreased when the velocity was measured at some distance from the electrodes for both a pancake and a high squish combustion chamber. The correlation between the velocity close to the spark plug and the early flame development showed no dependence on the air-fuel ratio.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Pages695-702
Number of pages8
Volume2052
ISBN (Print)0819413119
StatePublished - 1993
Externally publishedYes
EventFifth International Conference on Laser Anemometry - Koningshof, Veldhoven, Neth
Duration: Aug 23 1993Aug 27 1993

Other

OtherFifth International Conference on Laser Anemometry
CityKoningshof, Veldhoven, Neth
Period08/23/9308/27/93

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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