Files and links (2)
CC BY V4.0, Open Access
Journal article
Measurement of Spray Chamber Ignition Delay and Cetane Numbers for Aviation Turbine Fuels
Energy & fuels, Vol.39(22), pp.10479-10487
06/05/2025
PMID: 40496094
Appears in Aviation Sustainability Center (ASCENT)
Abstract
Experiments using pure compounds, National Jet Fuels Combustion Program (NJFCP) test fuels, and commercial jet fuels were conducted to demonstrate the equivalence of the indicated cetane number (ICN) and derived cetane number (DCN) for jet fuels. The calibrated range for ICN was also extended to lower cetane number (CN) values (5 to 35) to allow CN quantification for jet fuel synthetic blending components (SBCs) with low CN. ICN and DCN were shown to be highly correlated for values above about 30. This study presents the most comprehensive comparison of these two methods published to date. Because of the importance of low-volume test methods for early-stage SBC production process development, we demonstrated that ICN and DCN can be accurately measured with 15 mL of fuel, well below 40 to 100 mL required by standard methods. ICN or DCN is important for jet fuels because fuels with lower CN are more prone to lean blowout (LBO), an undesirable operational failure in a jet engine. Comparing data on a fuel-to-air ratio (Φ) at LBO for the NJFCP fuels shows similar linear correlations for ICN and DCN. Ignition delay measurements at lower-pressure and higher-temperature conditions may be more directly relevant to LBO. At 675 °C, 0.5 MPa, and a global Φ of roughly 0.68, ignition delay time correlations to LBO were similar to those produced from DCN and ICN. A much weaker correlation was obtained with a global Φ value of 0.34.
Metrics
1 Record Views
Details
- Title
- Measurement of Spray Chamber Ignition Delay and Cetane Numbers for Aviation Turbine Fuels
- Creators
- Jon Luecke - National Renewable Energy LaboratoryNimal Naser - National Renewable Energy LaboratoryZhibin Yang - Washington State University, School of Engineering and Applied Sciences (TRIC)Joshua Heyne - University of DaytonRobert L. McCormick - National Renewable Energy Laboratory
- Publication Details
- Energy & fuels, Vol.39(22), pp.10479-10487
- Academic Unit
- Aviation Sustainability Center (ASCENT); Alternative Jet Fuel
- Publisher
- American Chemical Society
- Number of pages
- 9
- Grants
- 13-C-AJFE-WaSU-042, Federal Aviation Administration (United States, Washington) - FAA
- Identifiers
- 99901313917601842
- Language
- English
- Resource Type
- Journal article