Ignition delay measurements of light naphtha: A fully blended low octane fuel

Tamour Javed, Ehson Fawad Nasir, Ahfaz Ahmed, Jihad Badra, Khalil Djebbi, Mohamed Beshir, Weiqi Ji, Mani Sarathy, Aamir Farooq

Research output: Contribution to journalArticlepeer-review

49 Scopus citations


The auto-ignition characteristics of a low-octane fuel were studied and a suitable kinetic surrogate was proposed. Ignition delay times were measured for Saudi Aramco's light naphtha fuel over a wide range of test conditions using a high pressure shock tube and a rapid compression machine (RCM). At low-temperature RCM conditions the multi- component surrogate matched the ignition delay times of light naphtha much more closely than the primary reference fuel (PRF) surrogate. Compared to the real fuel and the multi-component surrogate the higher reactivity of the PRF surrogate was attributable to its larger proportion of longer chain hydrocarbons. For a highly paraffinic fuel e.g. light naphtha the PRF surrogate adequately captured the ignition characteristics at high and intermediate temperatures while a multi-component surrogate is needed to capture the reactivity of the real fuel at low temperatures.

Original languageEnglish (US)
Pages (from-to)315-322
Number of pages8
JournalProceedings of the Combustion Institute
Issue number1
StatePublished - 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-04-23
Acknowledgements: The research reported in this work was supported by Saudi Aramco under the FUELCOM program and by King Abdullah University of Science and Technology (KAUST).


  • Ignition delay times
  • Light naphtha
  • Low-octane fuel
  • Shock tube
  • Surrogate formulation

ASJC Scopus subject areas

  • General Chemical Engineering
  • Mechanical Engineering
  • Physical and Theoretical Chemistry


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