期刊
FUEL
卷 355, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2023.129430
关键词
Jet fuel; Diesel; Spray ignition; NO addition; N-2 dilution; Ignition delay
This study examines the impact of NO-addition and N-2-dilution on the autoignition process of n-C-10-n-C-14 alkanes, which are crucial components of diesel and kerosene-based jet fuels. The results show that N-2-dilution consistently increases the ignition delay time (IDT) for the tested fuels, while the effect of NO-addition is temperature-dependent. The study provides valuable fundamental combustion data for n-C-10-n-C-14 fuels and fills a gap in the literature. These findings can be utilized by engine researchers to develop more efficient and cleaner combustion engine technologies.
This study investigates the effects of NO-addition and N-2-dilution on the autoignition process of n-C-10-n-C-14 alkanes, which are important components of diesel and kerosene-based jet fuels. The study is motivated by the need for a comprehensive understanding of the effects of nitrogen oxides (NOx) and N-2 on the fuel ignition process. This understanding is essential to enable the effective employment of advanced combustion engine technologies, such as exhaust gas recirculation (EGR) and Rich-Quench-Lean (RQL) gas turbine combustors. Ignition delay time (IDT) measurements were performed under various combustion conditions relevant to practical engine operation and low-temperature oxidation chemistry in a constant-volume combustion spray chamber device. The experimental results show that N-2-dilution consistently results in longer IDTs for the fuels tested. On the other hand, NO-addition has a temperature-dependent effect, shortening the IDTs for T > 692 K and vice versa. The magnitude of reactivity promotion or inhibition depends on NO concentration, temperature, pressure, and equivalence ratio. Based on the tested NO-addition levels, the inhibition of reactivity is approximately ten times greater than the promotion of reactivity caused by NO. The study fills a gap in the literature by providing comprehensive fundamental combustion data for n-C-10-n-C-14 fuels. This data, along with the corresponding analysis, can be used by engine researchers in developing more efficient and cleaner combustion engine technologies.
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