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Optical Characterization of Methanol Sprays and Mixture Formation in a Compression-Ignition Heavy-Duty Engine

Matamis, Alexios LU orcid ; Lonn, Sara LU ; Tuner, Martin LU ; Andersson, Oivind LU and Richter, Mattias LU (2020) SAE 2020 International Powertrains, Fuels and Lubricants Meeting, PFL 2020 In SAE Technical Papers
Abstract

Methanol is not a fuel typically used in compression ignition engines due to the high resistance to auto-ignition. However, conventional diesel combustion and PPC offer high engine efficiency along with low HC and CO emissions, albeit with the trade-off of increased NOx and PM emissions. This trade-off balance is mitigated in the case of methanol and other alcohol fuels, as they bring oxygen in the combustion chamber. Thus methanol compression ignition holds the potential for a clean and effective alternative fuel proposition. Most existing research on methanol is on SI engines and very little exists in the literature regarding methanol auto-ignition engine concepts. In this study, the spray characteristics of methanol inside the... (More)

Methanol is not a fuel typically used in compression ignition engines due to the high resistance to auto-ignition. However, conventional diesel combustion and PPC offer high engine efficiency along with low HC and CO emissions, albeit with the trade-off of increased NOx and PM emissions. This trade-off balance is mitigated in the case of methanol and other alcohol fuels, as they bring oxygen in the combustion chamber. Thus methanol compression ignition holds the potential for a clean and effective alternative fuel proposition. Most existing research on methanol is on SI engines and very little exists in the literature regarding methanol auto-ignition engine concepts. In this study, the spray characteristics of methanol inside the optically accessible cylinder of a DI-HD engine are investigated. The liquid penetration length at various injection timings is documented, ranging from typical PPC range down to conventional diesel combustion. Three matched engine operating conditions are studied, where the effective variant is injection pressure alone. The liquid penetration length and cone angle are characterized by Mie-scattering and the effect on fuel distribution is visualized via fuel-Tracer PLIF. Finally, the liquid penetration length of methanol is compared to commonly used PRF81 gasoline, demonstrating a stark dependence on ambient conditions.

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Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
SAE Powertrains, Fuels & Lubricants Meeting
series title
SAE Technical Papers
article number
2020-01-2109
edition
2020
publisher
Society of Automotive Engineers
conference name
SAE 2020 International Powertrains, Fuels and Lubricants Meeting, PFL 2020
conference location
Virtual, Online, Poland
conference dates
2020-09-22 - 2020-09-24
external identifiers
  • scopus:85092728964
ISSN
0148-7191
DOI
10.4271/2020-01-2109
language
English
LU publication?
yes
id
98e5b777-85a6-4739-a6ad-1e3ee5282e25
date added to LUP
2020-11-10 09:22:15
date last changed
2022-04-19 01:58:19
@inproceedings{98e5b777-85a6-4739-a6ad-1e3ee5282e25,
  abstract     = {{<p>Methanol is not a fuel typically used in compression ignition engines due to the high resistance to auto-ignition. However, conventional diesel combustion and PPC offer high engine efficiency along with low HC and CO emissions, albeit with the trade-off of increased NOx and PM emissions. This trade-off balance is mitigated in the case of methanol and other alcohol fuels, as they bring oxygen in the combustion chamber. Thus methanol compression ignition holds the potential for a clean and effective alternative fuel proposition. Most existing research on methanol is on SI engines and very little exists in the literature regarding methanol auto-ignition engine concepts. In this study, the spray characteristics of methanol inside the optically accessible cylinder of a DI-HD engine are investigated. The liquid penetration length at various injection timings is documented, ranging from typical PPC range down to conventional diesel combustion. Three matched engine operating conditions are studied, where the effective variant is injection pressure alone. The liquid penetration length and cone angle are characterized by Mie-scattering and the effect on fuel distribution is visualized via fuel-Tracer PLIF. Finally, the liquid penetration length of methanol is compared to commonly used PRF81 gasoline, demonstrating a stark dependence on ambient conditions.</p>}},
  author       = {{Matamis, Alexios and Lonn, Sara and Tuner, Martin and Andersson, Oivind and Richter, Mattias}},
  booktitle    = {{SAE Powertrains, Fuels & Lubricants Meeting}},
  issn         = {{0148-7191}},
  language     = {{eng}},
  month        = {{09}},
  publisher    = {{Society of Automotive Engineers}},
  series       = {{SAE Technical Papers}},
  title        = {{Optical Characterization of Methanol Sprays and Mixture Formation in a Compression-Ignition Heavy-Duty Engine}},
  url          = {{http://dx.doi.org/10.4271/2020-01-2109}},
  doi          = {{10.4271/2020-01-2109}},
  year         = {{2020}},
}