Autoignition behavior of synthetic alternative jet fuels: An examination of chemical composition effects on ignition delays at low to intermediate temperatures

作者：Valco Daniel; Gentz Gerald; Allen Casey; Colket Meredith; Edwards Tim; Gowdagiri Sandeep; Oehlschlaeger Matthew A; Toulson Elisa; Lee Tonghun^*

来源：Proceedings of the Combustion Institute, 2015, 35(3): 2983-2991.

DOI：10.1016/j.proci.2014.05.145

• Autoignition
• Rapid compression machine
• Shock tube
• JP-8
• JP-5

The autoignition characteristics of military aviation fuels (JP-5 and JP-8), proposed camelina-derived hydroprocessed renewable jet fuel replacements (HRJ-8 and HRJ-5), Fischer-Tropsch fuels (Shell and Sasol), three Sasol isoparaffinic solvents, as well as 50/50 volumetric blends of the alternative fuels with the conventional fuels are examined. Experiments were conducted in a rapid compression machine and shock tube at compressed temperatures of 625 K <= T-c <= 1000 K, a compressed pressure of 20 bar, and under stoichiometric and lean conditions. Several implicit properties of the alternative fuels prompted a study of the influence of chemical composition on autoignition, including the influence of isoparaffinic, cycloparaffinic, and aromatic structures. In addition, interesting combustion phenomena at low-temperature conditions are investigated under lean conditions, specifically concerning jet fuel blend reactivity, where a convergence in blend reactivity to the reactivity of either a conventional or alternative fuel is observed.

• 出版日期2015