Ignition studies of n-heptane/iso-octane/toluene blends

Tamour Javed, Changyoul Lee, Mohammed A. AlAbbad, Khalil Djebbi, Mohamed Beshir, Jihad Badra, Henry J. Curran, Aamir Farooq

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67 Scopus citations


Ignition delay times of four ternary blends of n-heptane/iso-octane/toluene, referred to as Toluene Primary Reference Fuels (TPRFs), have been measured in a high-pressure shock tube and in a rapid compression machine. The TPRFs were formulated to match the research octane number (RON) and motor octane number (MON) of two high-octane gasolines and two prospective low-octane naphtha fuels. The experiments were carried out over a wide range of temperatures (650–1250 K), at pressures of 10, 20 and 40 bar, and at equivalence ratios of 0.5 and 1.0. It was observed that the ignition delay times of these TPRFs exhibit negligible octane dependence at high temperatures (T > 1000 K), weak octane dependence at low temperatures (T
Original languageEnglish (US)
Pages (from-to)223-233
Number of pages11
JournalCombustion and Flame
StatePublished - Jul 9 2016


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