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High Speed Combustion Imaging in a Large Bore Gas Engine: The Relationship Between Pre- and Main Chamber Heat Release

Duong, Jeudi LU ; Wellander, Rikard LU ; Hyvonen, Jari; Andersson, Öivind LU ; Richter, Mattias LU ; Johansson, Bengt LU and Aldén, Marcus LU (2014) ASME International Mechanical Engineering Congress and Exposition, 2013 In ASME 2013 International Mechanical Engineering Congress and Exposition Volume 8A: Heat Transfer and Thermal Engineering 8A. p.08-022
Abstract
An experimental study is carried out to investigate the combustion process in a Wartsila 34SG spark-ignited lean burn four-stroke large bore engine (bore 340 mm) by means of optical diagnostics when operating on natural gas. The main focus of this work is to gain knowledge about in-cylinder combustion phenomena when igniting a lean air/fuel mixture with pre-combustion chamber induced jets. Especially the origin of cyclic variability is of interest. The flame propagation process in a single cycle was captured using a high speed video camera. The analysis is based on apparent heat release rates in the pre-combustion chamber and main chamber, in order to find correlations with the imaged phenomena. The results show that the flame propagation... (More)
An experimental study is carried out to investigate the combustion process in a Wartsila 34SG spark-ignited lean burn four-stroke large bore engine (bore 340 mm) by means of optical diagnostics when operating on natural gas. The main focus of this work is to gain knowledge about in-cylinder combustion phenomena when igniting a lean air/fuel mixture with pre-combustion chamber induced jets. Especially the origin of cyclic variability is of interest. The flame propagation process in a single cycle was captured using a high speed video camera. The analysis is based on apparent heat release rates in the pre-combustion chamber and main chamber, in order to find correlations with the imaged phenomena. The results show that the flame propagation inside the main chamber starts at the end of the pre-chamber combustion heat release and that variation in main chamber heat release does not correlate with variations in the pre-combustion chamber. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
ASME 2013 International Mechanical Engineering Congress and Exposition Volume 8A: Heat Transfer and Thermal Engineering
volume
8A
pages
08 - 022
publisher
American Society Of Mechanical Engineers (ASME)
conference name
ASME International Mechanical Engineering Congress and Exposition, 2013
external identifiers
  • WOS:000360032600022
  • Scopus:84903442734
ISBN
978-0-7918-5634-5
DOI
10.1115/IMECE2013-64286
language
English
LU publication?
yes
id
3aa0ebf4-a5c8-4a63-b413-439af76e88e2 (old id 7972410)
date added to LUP
2015-09-23 13:32:21
date last changed
2016-10-13 04:41:55
@misc{3aa0ebf4-a5c8-4a63-b413-439af76e88e2,
  abstract     = {An experimental study is carried out to investigate the combustion process in a Wartsila 34SG spark-ignited lean burn four-stroke large bore engine (bore 340 mm) by means of optical diagnostics when operating on natural gas. The main focus of this work is to gain knowledge about in-cylinder combustion phenomena when igniting a lean air/fuel mixture with pre-combustion chamber induced jets. Especially the origin of cyclic variability is of interest. The flame propagation process in a single cycle was captured using a high speed video camera. The analysis is based on apparent heat release rates in the pre-combustion chamber and main chamber, in order to find correlations with the imaged phenomena. The results show that the flame propagation inside the main chamber starts at the end of the pre-chamber combustion heat release and that variation in main chamber heat release does not correlate with variations in the pre-combustion chamber.},
  author       = {Duong, Jeudi and Wellander, Rikard and Hyvonen, Jari and Andersson, Öivind and Richter, Mattias and Johansson, Bengt and Aldén, Marcus},
  isbn         = {978-0-7918-5634-5},
  language     = {eng},
  pages        = {08--022},
  publisher    = {ARRAY(0x9205d18)},
  series       = {ASME 2013 International Mechanical Engineering Congress and Exposition Volume 8A: Heat Transfer and Thermal Engineering},
  title        = {High Speed Combustion Imaging in a Large Bore Gas Engine: The Relationship Between Pre- and Main Chamber Heat Release},
  url          = {http://dx.doi.org/10.1115/IMECE2013-64286},
  volume       = {8A},
  year         = {2014},
}