Fuel property effects on low-speed pre-ignition

Jatana, Gurneesh S.; Splitter, Derek A.; Kaul, Brian; Szybist, James P.

doi:10.1016/j.fuel.2018.05.060

Title: Fuel property effects on low-speed pre-ignition

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Abstract

This work explores the dependence of fuel distillation and flame speed on low-speed pre-ignition (LSPI). Findings are based on cylinder pressure analysis, as well as the number count, clustering, intensity, duration, and onset crank angle of LSPI events. Four fuels were used, with three of the fuels being blends with gasoline, and the fourth being neat gasoline. The blended fuels consisted of single molecules of different molecular types: a ketone (cyclopentanone), an alcohol (2-methyl-1-butanol), and an aromatic (ethylbenzene). All three pure molecules have RON values within ±2 and boiling points within ±5 °C. These fuels were blended with gasoline to a 25% mass fraction and were used to run the engine at identical LSPI prone operating conditions. The findings highlight that fuels with similar boiling properties and octane numbers can exhibit similar LSPI number counts, but with vastly different LSPI magnitudes and intensities. Moreover, the results highlight fundamental fuel properties such as flame speed are critical to characterizing the LSPI propensity and behavior of the fuel.

Authors:: Jatana, Gurneesh S.; Splitter, Derek A.; Kaul, Brian; Szybist, James P.

Publication Date:: Mon Oct 01 00:00:00 EDT 2018

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Bioenergy Technologies Office

OSTI Identifier:: 1439540

Alternate Identifier(s):: OSTI ID: 1439940

Grant/Contract Number:: AC0500OR22725; AC05-00OR22725

Resource Type:: Published Article

Journal Name:: Fuel

Additional Journal Information:: Journal Name: Fuel Journal Volume: 230 Journal Issue: C; Journal ID: ISSN 0016-2361

Publisher:: Elsevier

Country of Publication:: United Kingdom

Language:: English

Subject:: 42 ENGINEERING; LSPI; Preignition; Superknock; Spark ignition; Fuel effects

Citation Formats


                    Jatana, Gurneesh S., Splitter, Derek A., Kaul, Brian, and Szybist, James P. Fuel property effects on low-speed pre-ignition.  United Kingdom: N. p., 2018. 
Web.  doi:10.1016/j.fuel.2018.05.060.

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                    Jatana, Gurneesh S., Splitter, Derek A., Kaul, Brian, & Szybist, James P. Fuel property effects on low-speed pre-ignition.  United Kingdom.  https://doi.org/10.1016/j.fuel.2018.05.060

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                    Jatana, Gurneesh S., Splitter, Derek A., Kaul, Brian, and Szybist, James P. Mon .  
"Fuel property effects on low-speed pre-ignition".  United Kingdom.  https://doi.org/10.1016/j.fuel.2018.05.060.

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@article{osti_1439540,

  title        = {Fuel property effects on low-speed pre-ignition},

  author       = {Jatana, Gurneesh S. and Splitter, Derek A. and Kaul, Brian and Szybist, James P.},

  abstractNote = {This work explores the dependence of fuel distillation and flame speed on low-speed pre-ignition (LSPI). Findings are based on cylinder pressure analysis, as well as the number count, clustering, intensity, duration, and onset crank angle of LSPI events. Four fuels were used, with three of the fuels being blends with gasoline, and the fourth being neat gasoline. The blended fuels consisted of single molecules of different molecular types: a ketone (cyclopentanone), an alcohol (2-methyl-1-butanol), and an aromatic (ethylbenzene). All three pure molecules have RON values within ±2 and boiling points within ±5 °C. These fuels were blended with gasoline to a 25% mass fraction and were used to run the engine at identical LSPI prone operating conditions. The findings highlight that fuels with similar boiling properties and octane numbers can exhibit similar LSPI number counts, but with vastly different LSPI magnitudes and intensities. Moreover, the results highlight fundamental fuel properties such as flame speed are critical to characterizing the LSPI propensity and behavior of the fuel.},

  doi          = {10.1016/j.fuel.2018.05.060},

  journal      = {Fuel},

  number       = C,

  volume       = 230,

  place        = {United Kingdom},

  year         = {Mon Oct 01 00:00:00 EDT 2018},

  month        = {Mon Oct 01 00:00:00 EDT 2018}

}

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