Autoignition Chemistry of the Hexane Isomers: An Experimental and Kinetic Modeling Study 952406
Autoignition of the five distinct isomers of hexane is studied experimentally under motored engine conditions and computationally using a detailed chemical kinetic reaction mechanism. Computed and experimental results are compared and used to help understand the chemical factors leading to engine knock in spark-ignited engines and the molecular structure factors contributing to octane rating for hydrocarbon fuels. The kinetic model reproduces observed variations in critical compression ratio with fuel structure, and it also provides intermediate and final product species concentrations in much better agreement with observed results than has been possible previously. In addition, the computed results provide insights into the kinetic origins of fuel octane sensitivity.
Citation: Curran, H., Gaffuri, P., Pitz, W., Westbrook, C. et al., "Autoignition Chemistry of the Hexane Isomers: An Experimental and Kinetic Modeling Study," SAE Technical Paper 952406, 1995, https://doi.org/10.4271/952406. Download Citation
Henry J. Curran, Paolo Gaffuri, William J. Pitz, Charles K. Westbrook, William R. Leppard
Lawrence Livermore National Laboratory
1995 SAE International Fall Fuels and Lubricants Meeting and Exhibition
SAE 1995 Transactions: Journal of Fuels and Lubricants-V104-4