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Φ-Sensitivity Evaluation of n-Butanol and Iso-Butanol Blends with Surrogate Gasoline

Alemahdi, Nika LU ; Garcia, Antonio and Tuner, Martin LU (2023) SAE 16th International Conference on Engines and Vehicles, ICE 2023 In SAE Technical Papers
Abstract

Using renewable fuels is a reliable approach for decarbonization of combustion engines. iso-Butanol and n-butanol are known as longer chain alcohols and have the potential of being used as gasoline substitute or a renewable fraction of gasoline. The combustion behavior of renewable fuels in modern combustion engines and advanced combustion concepts is not well understood yet. Low-temperature combustion (LTC) is a concept that is a basis for some of the low emissions-high efficiency combustion technologies. Fuel Φ-sensitivity is known as a key factor to be considered for tailoring fuels for these engines. The Lund Φ-sensitivity method is an empirical test method for evaluation of the Φ-sensitivity of liquid fuels and evaluate fuel... (More)

Using renewable fuels is a reliable approach for decarbonization of combustion engines. iso-Butanol and n-butanol are known as longer chain alcohols and have the potential of being used as gasoline substitute or a renewable fraction of gasoline. The combustion behavior of renewable fuels in modern combustion engines and advanced combustion concepts is not well understood yet. Low-temperature combustion (LTC) is a concept that is a basis for some of the low emissions-high efficiency combustion technologies. Fuel Φ-sensitivity is known as a key factor to be considered for tailoring fuels for these engines. The Lund Φ-sensitivity method is an empirical test method for evaluation of the Φ-sensitivity of liquid fuels and evaluate fuel behavior in thermal. iso-Butanol and n-butanol are two alcohols which like other alcohol exhibit nonlinear behavior when blended with (surrogate) gasoline in terms of RON and MON. In this study, first the Lund Φ-sensitivity numbers of iso-butanol and n-butanol at CA50≈3°CA after TDC is measured. CA50 is the rank angle degree at which 50% of total accumulated heat is released. Then, the Lund Φ-sensitivity number of iso-butanol at two later combustion phasing of CA50≈8 & 6 °CA after TDC is evaluated. Finally, the Lund Φ-sensitivity number of volumetric blends of iso-butanol and surrogate gasoline (RON≈87) were measured. The results show the Φ-sensitivity of iso-butanol is lower than n-butanol which means the combustion behavior of iso-butanol is less sensitive to thermal and fuel stratification. The nonlinear behavior of Lund Φ-sensitivity number of iso-butanol blends with surrogate gasoline is observed. As expected, the later combustion phasing lowers the Lund Φ-sensitivity number of the tested fuel and increases the experimental range successfully.

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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 Tecnical papers
series title
SAE Technical Papers
conference name
SAE 16th International Conference on Engines and Vehicles, ICE 2023
conference location
Capri, Italy
conference dates
2023-09-10 - 2023-09-14
external identifiers
  • scopus:85174416434
ISSN
0148-7191
DOI
10.4271/2023-24-0089
language
English
LU publication?
yes
additional info
Funding Information: This research has been co-funded by the Swedish Energy Agency under the project “Future Alternative Transportation Fuels” and the project number 41139-1. Project Partners were, f3, Lantmännen, Perstorp AB, Preem, Volvo AB, Volvo Cars, Scania AB, st1, Saybolt Sweden AB, Stena Line. The authors would like to acknowledge the technicians at the Division of Combustion Engines at Lund University for their support with the experimental setup. Publisher Copyright: © 2023 SAE International. All rights reserved.
id
ac1de40e-b5da-41f1-ae71-1cdf063d11fb
date added to LUP
2023-12-18 13:25:56
date last changed
2023-12-18 13:32:25
@inproceedings{ac1de40e-b5da-41f1-ae71-1cdf063d11fb,
  abstract     = {{<p>Using renewable fuels is a reliable approach for decarbonization of combustion engines. iso-Butanol and n-butanol are known as longer chain alcohols and have the potential of being used as gasoline substitute or a renewable fraction of gasoline. The combustion behavior of renewable fuels in modern combustion engines and advanced combustion concepts is not well understood yet. Low-temperature combustion (LTC) is a concept that is a basis for some of the low emissions-high efficiency combustion technologies. Fuel Φ-sensitivity is known as a key factor to be considered for tailoring fuels for these engines. The Lund Φ-sensitivity method is an empirical test method for evaluation of the Φ-sensitivity of liquid fuels and evaluate fuel behavior in thermal. iso-Butanol and n-butanol are two alcohols which like other alcohol exhibit nonlinear behavior when blended with (surrogate) gasoline in terms of RON and MON. In this study, first the Lund Φ-sensitivity numbers of iso-butanol and n-butanol at CA50≈3°CA after TDC is measured. CA50 is the rank angle degree at which 50% of total accumulated heat is released. Then, the Lund Φ-sensitivity number of iso-butanol at two later combustion phasing of CA50≈8 &amp; 6 °CA after TDC is evaluated. Finally, the Lund Φ-sensitivity number of volumetric blends of iso-butanol and surrogate gasoline (RON≈87) were measured. The results show the Φ-sensitivity of iso-butanol is lower than n-butanol which means the combustion behavior of iso-butanol is less sensitive to thermal and fuel stratification. The nonlinear behavior of Lund Φ-sensitivity number of iso-butanol blends with surrogate gasoline is observed. As expected, the later combustion phasing lowers the Lund Φ-sensitivity number of the tested fuel and increases the experimental range successfully.</p>}},
  author       = {{Alemahdi, Nika and Garcia, Antonio and Tuner, Martin}},
  booktitle    = {{SAE Tecnical papers}},
  issn         = {{0148-7191}},
  language     = {{eng}},
  series       = {{SAE Technical Papers}},
  title        = {{Φ-Sensitivity Evaluation of n-Butanol and Iso-Butanol Blends with Surrogate Gasoline}},
  url          = {{http://dx.doi.org/10.4271/2023-24-0089}},
  doi          = {{10.4271/2023-24-0089}},
  year         = {{2023}},
}