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

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 octa...

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Bibliographic Details
Published in:Combustion and flame 2016-09, Vol.171, p.223-233
Main Authors: Javed, Tamour, Lee, Changyoul, AlAbbad, Mohammed, Djebbi, Khalil, Beshir, Mohamed, Badra, Jihad, Curran, Henry, Farooq, Aamir
Format: Article
Language:English
Subjects:
Ignition delay times
MON
RCMs
RON
Shock tubes
TPRF surrogates
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Summary: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 (650–1250K), at pressures of 10, 20 and 40bar, 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 >1000K), weak octane dependence at low temperatures (T
ISSN:0010-2180
1556-2921
DOI:10.1016/j.combustflame.2016.06.008