Ignition delay measurements of light naphtha: A fully blended low octane fuel

CATEGORY: LIGHT NAPHTHA
Ignition delay measurements of light naphtha: A fully blended low octane fuel

Type	Journal Article
Author	Tamour Javed
Author	Clean Combustion Research Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
URL	http://www.sciencedirect.com/science/article/pii/S1540748916300438
Publication	Proceedings of the Combustion Institute
Date	2016
Abstract	Light naphtha is a fully blended, low-octane, highly paraffinic fuel, and is one of the first distillates obtained during the crude oil refining process. Light naphtha is an attractive low-cost fuel candidate for advanced low-temperature compression ignition engines where autoignition is the primary control mechanism. Researchers measured ignition delay times for light naphtha in a shock tube and a rapid compression machine (RCM) over a broad range of temperatures, pressures and equivalence ratios. Ignition delay times were modeled using a two-component primary reference fuel (PRF) surrogate and a multi-component surrogate. Both surrogates adequately captured the measured ignition delay times of light naphtha under shock tube conditions. However, for low-temperature RCM conditions, simulations with the multi-component surrogate showed better agreement with experimental data. These simulated surrogate trends were confirmed by measuring the ignition delay times of the PRF and multi-component surrogates in the RCM at P = 20 bar, φ = 2. Detailed kinetic analyses were undertaken to ascertain the dependence of the surrogates’ reactivity on their chemical composition.