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Gasoline-ethanol blend formulation to mimic laminar flame speed and auto-ignition quality in automotive engines.

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Title: Gasoline-ethanol blend formulation to mimic laminar flame speed and auto-ignition quality in automotive engines.
Authors: Del Pecchia, M.1 (AUTHOR) marco.delpecchia@unimore.it, Pessina, V.1 (AUTHOR) valentina.pessina@unimore.it, Berni, F.1 (AUTHOR), d'Adamo, A.1 (AUTHOR), Fontanesi, S.1 (AUTHOR)
Source: Fuel (0016-2361). Mar2020, Vol. 264, pN.PAG-N.PAG. 1p.
Subjects: Gasoline, Flame, Methyl formate, Internal combustion engines, Antiknock gasoline, Chemical kinetics, Speed
Abstract: • A novel methodology to formulate gasoline-ethanol ETRF surrogates is proposed. • ETRF surrogates are defined to match combustion-relevant fuel properties. • Laminar Flame Speed correlations are derived for five gasoline-ethanol blends. • Correlations are derived for engine-like conditions. Several environment agencies worldwide have identified biofuels as a viable solution to meet the stringent targets imposed by future regulations in terms of on-road transport emissions. In the last decades, petroleum-based gasoline has been increasingly blended with oxygenated fuels, mostly ethanol. Blending ethanol with gasoline has two major effects: an increase of the octane number, thus promoting new scenarios for engine efficiency optimization, and a potential reduction of soot emissions. 3D-CFD simulations represent a powerful tool to optimize the use of ethanol-gasoline blends in internal combustion engines. Since most of the combustion models implemented in 3D-CFD codes are based on the "flamelet assumption", they require laminar flame speed as an input. Therefore, a thorough understanding of the gasoline-ethanol blend chemical behavior at engine-relevant conditions is crucial. While several laminar flame speed correlations are available in literature for both gasoline and pure ethanol at ambient conditions, none is available, to the extent of authors' knowledge, to describe laminar flame speed of gasoline-ethanol blends (for different ethanol volume contents) at engine relevant conditions. For this reason, in the present work, laminar flame speed correlations based on 1D detailed chemical kinetics calculations are derived targeting typical full-load engine-like conditions, for different ethanol-gasoline blends. A methodology providing a surrogate able to match crucial properties of a fuel is presented at first and validated against available experimental data. Then, laminar flame speed correlations obtained from 1D chemical kinetics simulations are proposed for each fuel blend surrogate. [ABSTRACT FROM AUTHOR]
Copyright of Fuel (0016-2361) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 141533704
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Gasoline-ethanol blend formulation to mimic laminar flame speed and auto-ignition quality in automotive engines.
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  Data: <searchLink fieldCode="AR" term="%22Del+Pecchia%2C+M%2E%22">Del Pecchia, M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> marco.delpecchia@unimore.it</i><br /><searchLink fieldCode="AR" term="%22Pessina%2C+V%2E%22">Pessina, V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> valentina.pessina@unimore.it</i><br /><searchLink fieldCode="AR" term="%22Berni%2C+F%2E%22">Berni, F.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22d'Adamo%2C+A%2E%22">d'Adamo, A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fontanesi%2C+S%2E%22">Fontanesi, S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Fuel+%280016-2361%29%22">Fuel (0016-2361)</searchLink>. Mar2020, Vol. 264, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Gasoline%22">Gasoline</searchLink><br /><searchLink fieldCode="DE" term="%22Flame%22">Flame</searchLink><br /><searchLink fieldCode="DE" term="%22Methyl+formate%22">Methyl formate</searchLink><br /><searchLink fieldCode="DE" term="%22Internal+combustion+engines%22">Internal combustion engines</searchLink><br /><searchLink fieldCode="DE" term="%22Antiknock+gasoline%22">Antiknock gasoline</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Speed%22">Speed</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • A novel methodology to formulate gasoline-ethanol ETRF surrogates is proposed. • ETRF surrogates are defined to match combustion-relevant fuel properties. • Laminar Flame Speed correlations are derived for five gasoline-ethanol blends. • Correlations are derived for engine-like conditions. Several environment agencies worldwide have identified biofuels as a viable solution to meet the stringent targets imposed by future regulations in terms of on-road transport emissions. In the last decades, petroleum-based gasoline has been increasingly blended with oxygenated fuels, mostly ethanol. Blending ethanol with gasoline has two major effects: an increase of the octane number, thus promoting new scenarios for engine efficiency optimization, and a potential reduction of soot emissions. 3D-CFD simulations represent a powerful tool to optimize the use of ethanol-gasoline blends in internal combustion engines. Since most of the combustion models implemented in 3D-CFD codes are based on the "flamelet assumption", they require laminar flame speed as an input. Therefore, a thorough understanding of the gasoline-ethanol blend chemical behavior at engine-relevant conditions is crucial. While several laminar flame speed correlations are available in literature for both gasoline and pure ethanol at ambient conditions, none is available, to the extent of authors' knowledge, to describe laminar flame speed of gasoline-ethanol blends (for different ethanol volume contents) at engine relevant conditions. For this reason, in the present work, laminar flame speed correlations based on 1D detailed chemical kinetics calculations are derived targeting typical full-load engine-like conditions, for different ethanol-gasoline blends. A methodology providing a surrogate able to match crucial properties of a fuel is presented at first and validated against available experimental data. Then, laminar flame speed correlations obtained from 1D chemical kinetics simulations are proposed for each fuel blend surrogate. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Fuel (0016-2361) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.fuel.2019.116741
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Gasoline
        Type: general
      – SubjectFull: Flame
        Type: general
      – SubjectFull: Methyl formate
        Type: general
      – SubjectFull: Internal combustion engines
        Type: general
      – SubjectFull: Antiknock gasoline
        Type: general
      – SubjectFull: Chemical kinetics
        Type: general
      – SubjectFull: Speed
        Type: general
    Titles:
      – TitleFull: Gasoline-ethanol blend formulation to mimic laminar flame speed and auto-ignition quality in automotive engines.
        Type: main
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          Name:
            NameFull: Del Pecchia, M.
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            NameFull: Pessina, V.
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            NameFull: Berni, F.
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            NameFull: d'Adamo, A.
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            NameFull: Fontanesi, S.
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            – D: 15
              M: 03
              Text: Mar2020
              Type: published
              Y: 2020
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              Value: 00162361
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              Value: 264
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