Autoignition response of n-butanol and its blends with primary reference fuel constituents of gasoline

作者：Kumar Kamal^*; Zhang Yu; Sung Chih Jen; Pitz William J

来源：Combustion and Flame, 2015, 162(6): 2466-2479.

DOI：10.1016/j.combustflame.2015.02.014

• n-Butanol
• iso-Octane
• n-Heptane
• Autoignition
• Fuel blend combustion

We study the influence of blending n-butanol on the ignition delay times of n-heptane and iso-octane, the primary reference fuels for gasoline. The ignition delay times are measured using a rapid compression machine, with an emphasis on the low-to-intermediate temperature conditions. The experiments are conducted at equivalence ratios of 0.4 and 1.0, for a compressed pressure of 20 bar, with the temperatures at the end of compression ranging from 613 K to 979 K. The effect of n-butanol addition on the development of the two-stage ignition characteristics for the two primary reference fuels is also examined. The experimental results are compared to predictions obtained using a detailed chemical kinetic mechanism, which has been obtained by a systematic merger of previously reported base models for the combustion of the individual fuel constituents. A sensitivity analysis on the base, and the merged models, is also performed to understand the dependence of autoignition delay times on the model parameters.

• 出版日期2015-6