2017/06/06 by Bryan W. Weber, Weber, Bryan W., Chih‐Jen Sung +1
Chemical Engineering · Chemistry · Engineering · #Advanced Combustion Engine Technologies #Chemical Physics (physics.chem-ph) #Chemical Thermodynamics and Molecular Structure #Energetic Materials and Combustion #FOS: Physical sciences
paper · pdf · doi:10.48550/arxiv.1706.01842
openalex publication_date 2017/06/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Investigation of the autoignition delay of the butanol isomers has been performed at elevated pressures of 15 bar and 30 bar and low to intermediate temperatures of 680-860 K. The reactivity of the stoichiometric isomers of butanol, in terms of inverse ignition delay, was ranked as n-butanol > sec-butanol ~ iso-butanol > tert-butanol at a compressed pressure of 15 bar but changed to n-butanol > tert-butanol > sec-butanol > iso-butanol at 30 bar. For the temperature and pressure conditions in this study, no NTC or two-stage ignition behavior were observed. However, for both of the compressed pressures studied in this work, tert-butanol exhibited unique pre-ignition heat release characteristics. As such, tert-butanol was further studied at two additional equivalence ratios (ϕ = 0.5 and 2.0) to help determine the cause of the heat release.