Autoignition Characterization of Primary Reference Fuels and n-Heptane/n-Butanol Mixtures in a Constant Volume Combustion Device and Homogeneous Charge Compression Ignition Engine

In this study, the autoignition behavior of primary reference fuels (PRF) and blends of n-heptane/n-butanol were examined in a Waukesha Fuel Ignition Tester (FIT) and a Homogeneous Charge Compression Engine (HCCI). Fourteen different blends of iso-octane, n-heptane, and n-butanol were tested in the FIT—28 test runs with 25 ignition measurements for each test run, totaling 350 individual tests in all. These experimental results supported previous...