Development of a new jet fuel surrogate and its associated reaction mechanism coupled with a multistep soot model for diesel engine combustion

Yu, Wenbin; Tay, Kunlin; Zhao, Feiyang; Yang, Wenming; Li, Han; Xu, Hongpeng

doi:10.1016/j.apenergy.2018.06.076

Cited by 16 publications

(5 citation statements)

References 52 publications

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“…JP-5 surrogates were formulated in this experimental work in the context of a diesel engine, which has been done in only a few cases for jet fuel. ,,,, Recent past surrogates prepared in the author’s laboratory , for JP-5 had four components and were tested in a diesel engine. The surrogate development process in the current study differs from that of past work.…”

Section: Resultsmentioning

confidence: 99%

“…20,22,23,29,59 The use of military jet fuel in military diesel engine enables fuel flexibility in operational situations. Yu et al 59 developed a Jet A surrogate and used a soot model for diesel engines. Kang et al 22 measured the carbon monoxide emission, apparent heat release rates, and ignition delay of a Jet A surrogate using (1) a constant volume combustion chamber and (2) a cooperative fuel research (CRF) engine.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Most of the combustion and modeling work with jet fuel surrogates have been in aviation-related hardware and test rigs, ,,− ,− ,,, but there are some studies that have focused on jet fuel combustion in diesel engine applications. ,,,, The use of military jet fuel in military diesel engine enables fuel flexibility in operational situations. Yu et al developed a Jet A surrogate and used a soot model for diesel engines. Kang et al measured the carbon monoxide emission, apparent heat release rates, and ignition delay of a Jet A surrogate using (1) a constant volume combustion chamber and (2) a cooperative fuel research (CRF) engine.…”

Section: Introductionmentioning

confidence: 99%

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Formulation of 7-Component Surrogate Mixtures for Military Jet Fuel and Testing in Diesel Engine

et al. 2022

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In this work, military jet fuel JP-5 surrogates were formulated and tested in comparison to a nominal JP-5 fuel. Combustion experiments were conducted in an advanced engine technology (AET) ignition quality tester (IQT) and a Yanmar L100W Tier 4 diesel engine due to the potential use of jet fuel in diesel engines in military situations. The surrogate development process began with determining the fuel chemical composition based on analyses of 256 JP-5 fuel samples. The physical and chemical properties of density, viscosity, flash point, surface tension, speed of sound, and distillation behavior guided the selection of the surrogate components and their composition. JP-5 differs from other aviation fuels in its properties, but most importantly in flash point, which is higher for safety purposes. Surrogates were prepared from n-dodecane, n-butylbenzene, 1-methylnaphthalene, tetralin, trans-decalin, iso-cetane, and n-butylcyclohexane as representatives of seven of the nine major chemical categories found in jet fuel. The mass fraction of each compound in the surrogates that fell within the range for that chemical class was found in real JP-5 fuels. After optimizing the surrogates for physical and chemical properties, six surrogates were selected for combustion testing in the Yanmar diesel engine, one of which was specifically selected for a low-derived cetane number (DCN). This surrogate performed poorly in the Yanmar engine. Four of the remaining five surrogates performed similarly to the baseline JP-5 in the diesel engine in terms of values and variability of ignition delay, rate of heat release, peak pressure, and the crank angle at which 50% of the fuel is burned. Of the six surrogates tested, the best one in terms of physical properties, chemical properties, and combustion behavior was the one that contained 0.2421, 0.1503, 0.0500, 0.0141, 0.0121, 0.2532, and 0.2782 mass percentages of n-dodecane, n-butylbenzene, 1-methylnaphthalene, tetralin, trans-decalin, iso-cetane, and n-butylcyclohexane, respectively.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Formulation of 7-Component Surrogate Mixtures for Military Jet Fuel and Testing in Diesel Engine

et al. 2022

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“…In addition to the aromatic compounds, these surrogate mixtures have contained up to ten compounds including paraffins, isoparaffins, polycylic aromatic compounds, and tetralins. The selection of an isoparaffin has mainly focused on commercially available branched isomers of octane, dodecane, and hexadecane, although other isoparaffins have been used. − The isododecane isomer 2,2,4,6,6-pentamethylheptane has attracted more attention in recent years. ,, For jet and diesel fuel model mixtures, aromatic compounds included toluene, − ortho -xylene, meta -xylene, ,, n -propylbenzene, 1,2,4-trimethylbenzene, , 1,3,5-trimethylbenzene, n -butylbenzene, , meta -cymene, n -pentylbenzene, n -hexylbenzene, n -heptylbenzene, and 1,3,5-triisopropylbenzene . Kim and Violi recently reported that mixtures containing 1,3,5-trimethylbenzene, 1,2,4-trimethylbenzene, and n -propylbenzene would produce surrogates with distillation behavior and aromatic content that would better match experimental values for Jet-A than using other aromatic compounds.…”

Section: Introductionmentioning

confidence: 99%

Binary Mixtures of Aromatic Compounds (n-Propylbenzene, 1,3,5-Trimethylbenzene, and 1,2,4-Trimethylbenzene) with 2,2,4,6,6-Pentamethylheptane: Densities, Viscosities, Speeds of Sound, Bulk Moduli, Surface Tensions, and Flash Points at 0.1 MPa

2020

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This study presents measured densities, viscosities, speeds of sound, surface tensions, and flash points and calculated bulk moduli of mixtures of 2,2,4,6,6-pentamethylheptane with C9H12 isomers (1,3,5-trimethylbenzene, 1,2,4-trimethylbenzene, and n-propylbenzene). The densities, speeds of sound, bulk moduli, and surface tensions increase and viscosities decrease as the mole fraction of the C9H12 isomer increases. Flash points decreased, remained the same, and increased as the amounts of n-propylbenzene, 1,3,5-trimethylbenzene, and 1,2,4-trimethylbenzene increased, respectively. Ideal behavior was found for viscosity, in which the excess molar Gibbs energies of activation for viscous flow did not differ statistically from zero. Nonideal behavior was found for excess molar volumes, V m E, and excess speeds of sound, c E, which were positive for all mixtures. Molecular dynamics (MD) simulations were used to predict the densities, bulk moduli, surface tensions, and viscosities of these binary mixtures. Although the densities, bulk moduli, and surface tensions were correctly reproduced, the simulations predicted nearly constant viscosities as a function of composition. The MD simulations showed that the molecular-level fluid structure of n-propylbenzene differed from that of 1,3,5-trimethylbenzene and 1,2,4-trimethylbenzene and that the preferential orientation of the aromatic rings of all three molecules was disrupted upon mixing with 2,2,4,6,6-pentamethylheptane. Finally, the mixtures showed an enrichment of 2,2,4,6,6-pentamethylheptane near the liquid–vapor interface. This interfacial enrichment depended on the mixture composition, with high C9H12 mole fractions leading to a larger degree of 2,2,4,6,6-pentamethylheptane enrichment at the interface.

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Characteristics of Biojet Fuel

Arora,

Mishra

2024

Clean Energy Production Technologies

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Development of a new jet fuel surrogate and its associated reaction mechanism coupled with a multistep soot model for diesel engine combustion

Cited by 16 publications

References 52 publications

Formulation of 7-Component Surrogate Mixtures for Military Jet Fuel and Testing in Diesel Engine

Formulation of 7-Component Surrogate Mixtures for Military Jet Fuel and Testing in Diesel Engine

Binary Mixtures of Aromatic Compounds (n-Propylbenzene, 1,3,5-Trimethylbenzene, and 1,2,4-Trimethylbenzene) with 2,2,4,6,6-Pentamethylheptane: Densities, Viscosities, Speeds of Sound, Bulk Moduli, Surface Tensions, and Flash Points at 0.1 MPa

Characteristics of Biojet Fuel

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