Autoignition studies of C5 isomers in a motored engine

Abstract

The autoignition characteristics of n-pentane iso-pentane and neo-pentane were explored to improve the understanding of C5 autoignition chemistry and provide experimental data to guide improvements to a general hydrocarbon oxidation mechanism. The autoignition behavior of the C5 isomers were studied in a modified CFR engine at 120°C and 600 rpm to determine the critical compression ratio (CCR) at which hot ignition occurs. The engine compression ratio was gradually increased to find the CCR to the point where CO in the engine exhaust was quickly reduced and significant high temperature heat release was seen with a constant equivalence ratio. The calculated percentage of low temperature heat ..