Host: The Japan Society of Mechanical Engineers
Name : The Ninth International Conference on Modeling and Diagnostics for Advanced Engine Systems (COMODIA 2017)
Date : July 25, 2017 - July 28, 2017
The ignition delay times of 2-methylfuran (MF), the primary reference fuel (PRF), and the MF-PRF90 blend were measured using a rapid compression machine at equivalence ratios of 1.0 and 0.5. The oxygen concentration was 16.4% and the temperature and pressure ranges were 655-888 K and 1.97-2.78 MPa, respectively. The ignition delay times of the MF-PRF90 blend were shorter than those of MF and longer than those of PRF90 under all experimental conditions. A detailed chemical kinetic model for the MF-PRF90 blend was constructed on the basis of the existing model. Further modifications of the rate constants were carried out to improve the agreement with the experimental ignition delay times. The simulated ignition delay times were in good agreement with those in the experiments. A sensitivity analysis of the ignition delay times was performed to investigate the important reactions in the ignition of the MF-PRF90 blend. It was found that the reaction of the HO2 radical with the 2-furanylmethyl radical to form the OH radical plays a key role in the oxidation of the MF-PRF90 blend, as do the H abstraction reactions from isooctane. It was considered that the increase in the ignition delay times of the MF-PRF90 blend was caused by the consumption of the OH radical by MF.
