The lean oxidation of iso-octane at elevated pressures

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Both spark-ignition and compression-ignition engines burn large molecular-weight blended fuels, a class to which the primary reference fuels (PRF), n-heptane and iso-octane belong. In this study experiments were performed using iso-octane in a high pressure flow reactor at a temperature of 925 K, at 3, 6 and 9 atm pressure and with a fuel/air equivalence ratio of approximately 0.05. Many hydrocarbon and oxygenated hydrocarbon intermediates were identified and quantified as a function of time. These experimental results provide a strin- gent test of the low temperature chemistry portion of a kinetic model as they emphasise the importance of alkyl radical ... continued below

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Chen, J S; Curran, H J & Litzinger, T A October 30, 1998.

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Both spark-ignition and compression-ignition engines burn large molecular-weight blended fuels, a class to which the primary reference fuels (PRF), n-heptane and iso-octane belong. In this study experiments were performed using iso-octane in a high pressure flow reactor at a temperature of 925 K, at 3, 6 and 9 atm pressure and with a fuel/air equivalence ratio of approximately 0.05. Many hydrocarbon and oxygenated hydrocarbon intermediates were identified and quantified as a function of time. These experimental results provide a strin- gent test of the low temperature chemistry portion of a kinetic model as they emphasise the importance of alkyl radical addition to molecular oxygen and internal H-atom isomerization reactions relative to alkyl radical decomposition reactions. A detailed chemical kinetic mechanism is used to simulate these experiments. We provide comparisons of model predictions with experimentally measured species profiles and describe how each species is formed as predicted by the detailed model.

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  • Western States Section Combustion Institute, Seattle, WA, October 26-27, 1998

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  • Other: DE00007812
  • Report No.: UCRL-JC-132384
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 7812
  • Archival Resource Key: ark:/67531/metadc723525

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  • October 30, 1998

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  • Sept. 29, 2015, 5:31 a.m.

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  • May 6, 2016, 10:51 p.m.

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Chen, J S; Curran, H J & Litzinger, T A. The lean oxidation of iso-octane at elevated pressures, article, October 30, 1998; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc723525/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.