A Reduced Chemical Kinetic Model for Autoignition of the Butanes

962106

10/01/1996

Event
1996 SAE International Fall Fuels and Lubricants Meeting and Exhibition
Authors Abstract
Content
A reduced chemical kinetic model by Li et al. [1]* for predicting primary reference fuels' reactivity and autoignition behavior was modified to apply to the butanes, and it was correlated to experimental results from the non-fired engine cycles under skip fired conditions. The fuels examined in this work were neat n-butane and n-butane/iso-butane blends (10, 20, and 48 percent by volume iso-butane). In our initial work using measured pressure data from the first skip cycle, we modified Li et al.'s model by only adjusting the fuel specific rate parameters of the alkylperoxy radical (RO2·) isomerization reaction, the reaction of aldehydes with OH·, and the reaction forming cyclic ethers. In this work, analysis was extended to the second skip cycle and additional oxidation rate parameters with high fuel sensitivity were adjusted. Several reactions, which are not significant in butane oxidation, were temporarily made to be inactive in the model. The modified model improved the predictions of the heat release onset time (the time at which significant heat release occurs) and the magnitude of the heat release could be matched very well. The predictions of the fuel consumption and carbon monoxide (CO) formation were in reasonable agreement with the experimental data.
Meta TagsDetails
DOI
https://doi.org/10.4271/962106
Pages
13
Citation
Wang, S., Miller, D., and Cernansky, N., "A Reduced Chemical Kinetic Model for Autoignition of the Butanes," SAE Technical Paper 962106, 1996, https://doi.org/10.4271/962106.
Additional Details
Publisher
Published
Oct 1, 1996
Product Code
962106
Content Type
Technical Paper
Language
English