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A Study of a Glow Plug Ignition Engine by Chemiluminescence Images

Manente, Vittorio LU ; Johansson, Bengt LU and Tunestål, Per LU (2007) JSAE/SAE International Fuels & Lubricants Meeting In SAE Technical Paper Series
Abstract
An experimental study of a glow plug engine combustion process has been performed by applying chemiluminescence imaging. The major intent was to understand what kind of combustion is present in a glow plug engine and how the combustion process behaves in a small volume and at high engine speed. To achieve this, images of natural emitted light were taken and filters were applied for isolating the formaldehyde and hydroxyl species.



Images were taken in a model airplane engine, 4.11 cm₃, modified for optical access. The pictures were acquired using a high-speed camera capable of taking one photo every second or fourth crank angle degree, and consequently visualizing the progress of the combustion process. The images were... (More)
An experimental study of a glow plug engine combustion process has been performed by applying chemiluminescence imaging. The major intent was to understand what kind of combustion is present in a glow plug engine and how the combustion process behaves in a small volume and at high engine speed. To achieve this, images of natural emitted light were taken and filters were applied for isolating the formaldehyde and hydroxyl species.



Images were taken in a model airplane engine, 4.11 cm₃, modified for optical access. The pictures were acquired using a high-speed camera capable of taking one photo every second or fourth crank angle degree, and consequently visualizing the progress of the combustion process. The images were taken with the same operating condition at two different engine speeds: 9600 and 13400 rpm. A mixture of 65% methanol, 20% nitromethane and 15% lubricant was used as fuel.



The experiments show that glow plug combustion is a propagating autoignition combustion and that the homogeneity of the oxidation process increases with the engine speed. It was also observed that at low speed, the low temperature reactions start together with the rate of heat release and once they are over the high temperature reactions appear. On the other hand at high speed there is no time for low temperature reactions followed by high temperature reactions. This means that formaldehyde formation is partially skipped and hydroxyl shows up almost at the same time but not in the same location as formaldehyde. (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
keywords
Internal Combustion Engines, Compression Ignition, Two-Stroke
in
SAE Technical Paper Series
publisher
Society of Automotive Engineers
conference name
JSAE/SAE International Fuels & Lubricants Meeting
external identifiers
  • other:2007-01-1884
  • scopus:84877441204
ISSN
0148-7191
DOI
10.4271/2007-01-1884
language
English
LU publication?
yes
id
f3982a89-4351-4796-9b02-72e08772d611 (old id 1395931)
alternative location
http://papers.sae.org/2007-01-1884/
date added to LUP
2014-02-24 13:34:15
date last changed
2017-09-24 04:22:57
@inproceedings{f3982a89-4351-4796-9b02-72e08772d611,
  abstract     = {An experimental study of a glow plug engine combustion process has been performed by applying chemiluminescence imaging. The major intent was to understand what kind of combustion is present in a glow plug engine and how the combustion process behaves in a small volume and at high engine speed. To achieve this, images of natural emitted light were taken and filters were applied for isolating the formaldehyde and hydroxyl species.<br/><br>
<br/><br>
Images were taken in a model airplane engine, 4.11 cm₃, modified for optical access. The pictures were acquired using a high-speed camera capable of taking one photo every second or fourth crank angle degree, and consequently visualizing the progress of the combustion process. The images were taken with the same operating condition at two different engine speeds: 9600 and 13400 rpm. A mixture of 65% methanol, 20% nitromethane and 15% lubricant was used as fuel.<br/><br>
<br/><br>
The experiments show that glow plug combustion is a propagating autoignition combustion and that the homogeneity of the oxidation process increases with the engine speed. It was also observed that at low speed, the low temperature reactions start together with the rate of heat release and once they are over the high temperature reactions appear. On the other hand at high speed there is no time for low temperature reactions followed by high temperature reactions. This means that formaldehyde formation is partially skipped and hydroxyl shows up almost at the same time but not in the same location as formaldehyde.},
  author       = {Manente, Vittorio and Johansson, Bengt and Tunestål, Per},
  booktitle    = {SAE Technical Paper Series},
  issn         = {0148-7191},
  keyword      = {Internal Combustion Engines,Compression Ignition,Two-Stroke},
  language     = {eng},
  publisher    = {Society of Automotive Engineers},
  title        = {A Study of a Glow Plug Ignition Engine by Chemiluminescence Images},
  url          = {http://dx.doi.org/10.4271/2007-01-1884},
  year         = {2007},
}