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Title: Autoignition response of n-butanol and its blend with primary reference fuel constituents of gasoline.

Journal Article · · Combustion and Flame
 [1];  [1];  [1];  [2]
  1. Univ. of Connecticut, Storrs, CT (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

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. In conclusion, 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.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Combustion Energy Frontier Research Center (CEFRC); Lawrence Livermore National Lab., Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC52-07NA27344; SC0001198
OSTI ID:
1281683
Alternate ID(s):
OSTI ID: 1246735
Report Number(s):
LLNL-JRNL-591474
Journal Information:
Combustion and Flame, Vol. 162, Issue 6; ISSN 0010-2180
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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