Autoignition Characteristics of Ethanol

Paper #:
  • 961175

Published:
  • 1996-05-01
Citation:
Bollentin, J. and Wilk, R., "Autoignition Characteristics of Ethanol," SAE Technical Paper 961175, 1996, https://doi.org/10.4271/961175.
Pages:
11
Abstract:
The autoignition characteristics of ethanol were examined in the 667-743 K temperature range at one atmosphere. A closed static reactor testing facility, of the Le Chatelier type was employed in this study. The autoignition limits for two ethanol concentrations at varied oxygen-nitrogen concentrations are mapped out. At each fuel concentration the minimum autoignition temperature occurred at an equivalence ratio of 0.3. An Arrhenius-type expression for the ignition delay time was developed and yielded a global activation energy of 42.1 kcal/mol. Increases in ethanol and oxygen concentrations cause a decrease in ignition delay time. Ethanol concentrations proved to have a greater effect on the ignition delay times than did oxygen concentrations.
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