Conventional and Bio-Derived Jet Fuel Surrogate Modeling in Low Temperature and Lean Combustion

Although low-temperature premixed compression ignition (PCI) combustion in a light-duty diesel engine offers dramatic and simultaneous reductions in nitric oxides (NOx) and soot, associated increases in unburned hydrocarbons (HC) and carbon monoxide (CO) become unacceptable. Production diesel oxidation catalysts (DOCs) are effective in oxidizing the increased levels of HC and CO under lean combustion conditions. However, the low temperature / high CO combination under rich PCI conditions, designed as a lean NOx trap (LNT) regeneration mode, generally renders the DOC ineffective. The objectives of this study are to characterize the oxidizing efficiency of a production DOC under lean and rich PCI conditions, and attempt to identify probable causes for the observed ineffectiveness under rich PCI. The study uses several tests to characterize the behavior of the DOC under lean PCI and rich PCI combustion conditions, including: (1) steady-state feed gas characterization, (2) transient feed gas characterization, (3) air injection (4) insulated AF sweep, and (5) combustion mode switching. The DOC never becomes effective under rich PCI for any of the tests, suggesting that the platinum-based catalyst may be incorrect for use with rich PCI. Furthermore, combustion mode switching between lean PCI and rich PCI (mimicking LNT loading and regeneration) demonstrates diminishing effectiveness of the DOC during and after continuous mode transitioning.

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Low temperature oxidation of jet fuel

10.2514/6.1997-272 ◽

1997 ◽

Author(s):

J. Ervin ◽

S. Zabarnick ◽

T. Williams ◽

J. Ervin ◽

S. Zabarnick ◽

...

Keyword(s):

Low Temperature ◽

Jet Fuel ◽

Low Temperature Oxidation ◽

Temperature Oxidation

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A jet fuel surrogate formulated by real fuel properties

Combustion and Flame ◽

10.1016/j.combustflame.2010.07.001 ◽

2010 ◽

Vol 157 (12) ◽

pp. 2333-2339 ◽

Cited By ~ 353

Author(s):

Stephen Dooley ◽

Sang Hee Won ◽

Marcos Chaos ◽

Joshua Heyne ◽

Yiguang Ju ◽

...

Keyword(s):

Jet Fuel ◽

Fuel Properties ◽

Fuel Surrogate

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Low-temperature filterability of T-6 jet fuel

Chemistry and Technology of Fuels and Oils ◽

10.1007/bf00730903 ◽

1984 ◽

Vol 20 (2) ◽

pp. 79-80 ◽

Cited By ~ 1

Author(s):

A. I. Belousov ◽

E. M. Bushueva ◽

D. G. Rudyakov

Keyword(s):

Low Temperature ◽

Jet Fuel

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Low Temperature Properties Of Fuel Mixtures Of Kerosene And Fame Type Used To Supply Turbine Engines In Marine And Other Non-Aeronautical Applications

Polish Maritime Research ◽

10.1515/pomr-2015-0023 ◽

2015 ◽

Vol 22 (2) ◽

pp. 101-105 ◽

Cited By ~ 4

Author(s):

Wojciech Dzięgielewski ◽

Bartosz Gawron ◽

Andrzej Kulczycki

Keyword(s):

Low Temperature ◽

Chemical Structure ◽

Methyl Esters ◽

Jet Fuel ◽

Turbine Engines ◽

Cold Filter Plugging Point ◽

Fuel Jet ◽

Fuel Mixtures ◽

Marine Navigation ◽

Higher Fatty Acids

Abstract A worldwide trend to popularise gradually increasing use of biofuels in various applications was a motivation for gaining interest in FAME as a commonly available biocomponent to fuels combusted in turbine engines. These engines are mainly used in aeronautics, but many of them are also used in other, non-aeronautical areas, including marine navigation. Specific conditions in which fuels are combusted in turbine engines used in these applications are the reason why fuel mixtures of kerosene and FAME type should reveal relevant low temperature characteristics. The article presents results of tests of low temperature properties of mixtures of the jet fuel Jet A-1 and methyl esters of higher fatty acids (FAME). The prepared mixtures contained different contents of FAME. The obtained results present changes of: viscosity, cloud point, pour point, crystallising point, and cold filter plugging point, depending on the percentage by volume of FAME. They also prove that the course of changes of low temperature properties of these mixtures is affected by chemical structure of the biocomponent.

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Investigation of Low-Temperature Lean Combustion Characteristics in Power Plants with External Heating of Components

Problems of the Regional Energetics ◽

10.52254/1857-0070.2021.2-50.11 ◽

2021 ◽

Vol 2(50) ◽

Author(s):

Nikolay Bachev ◽

◽

Alena Shilova ◽

Oleg Matyunin ◽

Oksana Betinskaya ◽

...

Keyword(s):

Low Temperature ◽

Combustion Chamber ◽

Flow Rate ◽

Turbulent Combustion ◽

Power Plants ◽

Lean Combustion ◽

Relative Flow Rate ◽

External Heating ◽

Low Emission ◽

Relative Flow

An integral part of any open-type gas turbine plant is a low-emission combustion chamber, which is usually two-zone and cooled. One of the ways to reduce emission of harmful substanc-es is organizing low-emission low-temperature lean combustion with external heating of compo-nents. This paper investigates the effect of external heating of air and fuel gas on expansion of the lower combustion limit and stable flame position in a single-zone uncooled combustion chamber of a microgas turbine power plant. Stable position of the flame front in combustion chambers of this type mainly depends on the ratio between the average flow rate of the combus-tible-air mixture and the rate of turbulent combustion. This ratio depends on thermal, gas-dynamic, thermochemical and geometric factors. The purpose of this work is to substantiate the possibility of using the relative flow rate as a generalized characteristic. This goal was achieved in processing a large amount of published experimental data and numerical modeling of low-temperature combustion of lean mixtures. The most significant research result is determination of the range of relative flow rate (gk = 0.3…3.5·10-4 kg⁄s∙N), at which it is possible to ensure sta-ble flame position in a single-zone combustion chamber. Significance of the obtained results lies in the fact that using the relative flow rate makes it possible to quickly determine and analyze the geometric and gas-dynamic parameters and characteristics of turbulent combustion in com-bustion chambers of micro-gas turbine power plants.

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