Advanced

Three-dimensional laser induced fluorescence of fuel distributions in an HCCI engine

Nygren, Jenny LU ; Hult, Johan LU ; Richter, Mattias LU ; Aldén, Marcus LU ; Christensen, Magnus LU ; Hultqvist, Anders LU and Johansson, Bengt LU (2002) Twenty-Ninth International Symposium on Combustion Hokkaido University Sapporo Japan In Proceedings of the Combustion Institute 29. p.679-685
Abstract
Three-dimensional imaging of fuel tracer planar laser-induced fluorescence in a homogeneous charge compression ignition (HCCI) engine is presented. A high-speed multiple Nd:YAG laser and detection system, in combination, with a scanning mirror, are used to collect eight images, with an equidistant separation of 0.5 mm. Three-dimensional isoconcentration surfaces calculated from the data are visualized. Three-dimensional imaging offers new opportunities to study different combustion events, specifically the topology of flame structures. For example, it is possible to distinguish if separate islands in a fluorescence image really are separate or if it is an effect from wrinkling in and out of the laser sheet. The PLIF images were also... (More)
Three-dimensional imaging of fuel tracer planar laser-induced fluorescence in a homogeneous charge compression ignition (HCCI) engine is presented. A high-speed multiple Nd:YAG laser and detection system, in combination, with a scanning mirror, are used to collect eight images, with an equidistant separation of 0.5 mm. Three-dimensional isoconcentration surfaces calculated from the data are visualized. Three-dimensional imaging offers new opportunities to study different combustion events, specifically the topology of flame structures. For example, it is possible to distinguish if separate islands in a fluorescence image really are separate or if it is an effect from wrinkling in and out of the laser sheet. The PLIF images were also analyzed by identifying five intensity ranges corresponding to increasing degrees of reaction progress. The gradual fuel consumption and thus combustion was then analyzed by calculating the volumetric fraction of these intensity ranges for different crank angle positions. The occurrence of multiple isolated ignition spots and the observed gradual decrease in fuel concentration indicates that HCCI combustion relies on distributed reactions and not flame propagation. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Proceedings of the Combustion Institute
volume
29
pages
679 - 685
publisher
Elsevier
conference name
Twenty-Ninth International Symposium on Combustion Hokkaido University Sapporo Japan
external identifiers
  • wos:000182866100083
  • scopus:84915757097
ISSN
0082-0784
DOI
10.1016/S1540-7489(02)80087-6
language
English
LU publication?
yes
id
da74465e-106c-491b-90db-78e1e5fa6fce (old id 310788)
date added to LUP
2007-11-28 12:49:13
date last changed
2017-09-17 08:02:49
@inproceedings{da74465e-106c-491b-90db-78e1e5fa6fce,
  abstract     = {Three-dimensional imaging of fuel tracer planar laser-induced fluorescence in a homogeneous charge compression ignition (HCCI) engine is presented. A high-speed multiple Nd:YAG laser and detection system, in combination, with a scanning mirror, are used to collect eight images, with an equidistant separation of 0.5 mm. Three-dimensional isoconcentration surfaces calculated from the data are visualized. Three-dimensional imaging offers new opportunities to study different combustion events, specifically the topology of flame structures. For example, it is possible to distinguish if separate islands in a fluorescence image really are separate or if it is an effect from wrinkling in and out of the laser sheet. The PLIF images were also analyzed by identifying five intensity ranges corresponding to increasing degrees of reaction progress. The gradual fuel consumption and thus combustion was then analyzed by calculating the volumetric fraction of these intensity ranges for different crank angle positions. The occurrence of multiple isolated ignition spots and the observed gradual decrease in fuel concentration indicates that HCCI combustion relies on distributed reactions and not flame propagation.},
  author       = {Nygren, Jenny and Hult, Johan and Richter, Mattias and Aldén, Marcus and Christensen, Magnus and Hultqvist, Anders and Johansson, Bengt},
  booktitle    = {Proceedings of the Combustion Institute},
  issn         = {0082-0784},
  language     = {eng},
  pages        = {679--685},
  publisher    = {Elsevier},
  title        = {Three-dimensional laser induced fluorescence of fuel distributions in an HCCI engine},
  url          = {http://dx.doi.org/10.1016/S1540-7489(02)80087-6},
  volume       = {29},
  year         = {2002},
}