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Soot Oxidation Studies in an Optical Diesel Engine Using Laser-Induced Incandescence and Extinction : The Effects of Injector Aging and Fuel Additive

Mannazhi, Manu LU ; Zhu, Xinda LU ; Andersson, Oivind LU and Bengtsson, Per Erik LU orcid (2021) In SAE International Journal of Engines 14(5). p.749-761
Abstract

Previous studies have shown that injector aging adversely affects the diesel engine spray formation and combustion. It has also been shown that the oxygenated fuel additive tripropylene glycol monomethyl ether (TPGME) can lower soot emissions. In this study, the effects of injector aging and TPGME on the late cycle oxidation of soot were investigated using laser diagnostic techniques in a light-duty optical diesel engine at two load conditions. The engine was equipped with a quartz piston with the same complex piston geometry as a production engine. Planar laser-induced incandescence (LII) was used to obtain semiquantitative in-cylinder two-dimensional (2D) soot volume fraction (fv) distributions using extinction measurements. The soot... (More)

Previous studies have shown that injector aging adversely affects the diesel engine spray formation and combustion. It has also been shown that the oxygenated fuel additive tripropylene glycol monomethyl ether (TPGME) can lower soot emissions. In this study, the effects of injector aging and TPGME on the late cycle oxidation of soot were investigated using laser diagnostic techniques in a light-duty optical diesel engine at two load conditions. The engine was equipped with a quartz piston with the same complex piston geometry as a production engine. Planar laser-induced incandescence (LII) was used to obtain semiquantitative in-cylinder two-dimensional (2D) soot volume fraction (fv) distributions using extinction measurements. The soot oxidation rate was estimated from the decay rate of the in-cylinder soot concentration for differently aged injectors and for cases with and without TPGME in the fuel. The aged injector produced higher soot concentrations than the new injector at both load conditions. The aged injector also showed higher soot oxidation rates than the new injector at the low load condition. TPGME resulted in lower soot concentrations at both load conditions and faster oxidation rates, especially at mid load conditions.

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Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Extinction, Fuel additives, Injector aging, Laser diagnostics, Laser-induced incandescence, Optical diesel engine, Soot oxidation, TPGME
in
SAE International Journal of Engines
volume
14
issue
5
pages
749 - 761
publisher
SAE
external identifiers
  • scopus:85110002610
ISSN
1946-3936
DOI
10.4271/03-14-05-0045
language
English
LU publication?
yes
id
120b494c-fe08-44b3-84c6-657a2bd65612
date added to LUP
2022-01-04 12:42:00
date last changed
2024-02-04 10:42:59
@article{120b494c-fe08-44b3-84c6-657a2bd65612,
  abstract     = {{<p>Previous studies have shown that injector aging adversely affects the diesel engine spray formation and combustion. It has also been shown that the oxygenated fuel additive tripropylene glycol monomethyl ether (TPGME) can lower soot emissions. In this study, the effects of injector aging and TPGME on the late cycle oxidation of soot were investigated using laser diagnostic techniques in a light-duty optical diesel engine at two load conditions. The engine was equipped with a quartz piston with the same complex piston geometry as a production engine. Planar laser-induced incandescence (LII) was used to obtain semiquantitative in-cylinder two-dimensional (2D) soot volume fraction (fv) distributions using extinction measurements. The soot oxidation rate was estimated from the decay rate of the in-cylinder soot concentration for differently aged injectors and for cases with and without TPGME in the fuel. The aged injector produced higher soot concentrations than the new injector at both load conditions. The aged injector also showed higher soot oxidation rates than the new injector at the low load condition. TPGME resulted in lower soot concentrations at both load conditions and faster oxidation rates, especially at mid load conditions.</p>}},
  author       = {{Mannazhi, Manu and Zhu, Xinda and Andersson, Oivind and Bengtsson, Per Erik}},
  issn         = {{1946-3936}},
  keywords     = {{Extinction; Fuel additives; Injector aging; Laser diagnostics; Laser-induced incandescence; Optical diesel engine; Soot oxidation; TPGME}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{749--761}},
  publisher    = {{SAE}},
  series       = {{SAE International Journal of Engines}},
  title        = {{Soot Oxidation Studies in an Optical Diesel Engine Using Laser-Induced Incandescence and Extinction : The Effects of Injector Aging and Fuel Additive}},
  url          = {{http://dx.doi.org/10.4271/03-14-05-0045}},
  doi          = {{10.4271/03-14-05-0045}},
  volume       = {{14}},
  year         = {{2021}},
}