Effect of Intake Pressure and Temperature on the Auto-Ignition of Fuels with Different Cetane Number and Volatility

Jayakumar, Chandrasekharan; Zheng, Zhimin; Joshi, Umashankar; Bryzik, Walter; Henein, Naeim A.; Sattler, Eric

doi:10.4271/2012-01-1317

Cited by 12 publications

(9 citation statements)

References 19 publications

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“…On this note, it was concluded that fuel volatility affected the physical delay, while CN affected the chemical delay. 134 Generally, in most cases, kerosene was seen to have a lower CN than diesel. 6,53,54 As the CN of kerosene was lower than diesel, combustion was retarded under both low- and high-load conditions.…”

Section: Experimental Investigations Of Kerosene Combustion and Emissions In Dici Enginesmentioning

confidence: 91%

“…[120][121][122][123][124][125][126] It should be noted that studies done recently on kerosene combustion were predominantly done using DICI engines. 6,42,53,54,[127][128][129][130][131][132][133][134][135][136] From DICI engine experiments, it was observed that kerosene had a longer ignition delay period than diesel even though kerosene had a lower viscosity and better vaporization characteristic. 6,53,54 Under high EGR rates, the difference between diesel's and kerosene's ignition delay became much more obvious.…”

Section: Kerosene Combustion In Non-optical Enginesmentioning

confidence: 99%

“…6 On the other hand, for kerosene that had a similar CN as diesel, it was observed that combustion started earlier than diesel due to the higher volatility and evaporation rate of kerosene. 42,133,134,136 It is interesting to note from experiments that even though kerosene and diesel had different densities, volatilities, and viscosities, their combustion characteristics in terms of heat-release and pressure rise were very similar owing to the fact that they had similar CNs and air entrainment characteristics. [133][134][135][136] Moreover, it was observed that under high boost pressures, combustion was significantly affected for fuels with low CN and high volatility such as kerosene.…”

Section: Kerosene Combustion In Non-optical Enginesmentioning

confidence: 99%

“…42,133,134,136 It is interesting to note from experiments that even though kerosene and diesel had different densities, volatilities, and viscosities, their combustion characteristics in terms of heat-release and pressure rise were very similar owing to the fact that they had similar CNs and air entrainment characteristics. [133][134][135][136] Moreover, it was observed that under high boost pressures, combustion was significantly affected for fuels with low CN and high volatility such as kerosene. On this note, it was concluded that fuel volatility affected the physical delay, while CN affected the chemical delay.…”

Section: Kerosene Combustion In Non-optical Enginesmentioning

confidence: 99%

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From fundamental study to practical application of kerosene in compression ignition engines: An experimental and modeling review

Tay

Zhao

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part D:

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The use of kerosene in direct injection compression ignition engines is fundamentally due to the introduction of the Single Fuel Concept. As conventional direct injection compression ignition diesel engines are made specifically to use diesel fuel, the usage of kerosene will affect engine emissions and performance due to differences between the fuel properties of kerosene and diesel. As a result, in order for kerosene to be properly and efficiently used in diesel engines, it is needful for the scientific community to know the properties of kerosene, its autoignition and combustion characteristics, as well as its emissions formation behavior under diesel engine operating conditions. Moreover, it is desirable to know the progress made in the development of suitable kerosene surrogates for engine applications as it is a crucial step toward the development of reliable chemical reaction mechanisms for numerical simulations. Therefore, in this work, a comprehensive review is carried out systematically to better understand the characteristics and behavior of kerosene under direct injection compression ignition engine relevant conditions. In this review work, the fuel properties of kerosene are summarized and discussed. In addition, fundamental autoignition studies of kerosene in shock tube, rapid compression machine, fuel ignition tester, ignition quality tester, constant volume combustion chamber, and engine are compiled and evaluated. Furthermore, experimental studies of kerosene spray and combustion in constant volume combustion chambers are examined. Also, the experimental investigations of kerosene combustion and emissions in direct injection compression ignition engines are discussed. Moreover, the development of kerosene surrogates, their chemical reaction mechanisms, and the modeling of kerosene combustion in direct injection compression ignition engines are summarized and talked about. Finally, recommendations are also given to help researchers focus on the areas which are still severely lacking.

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Section: Experimental Investigations Of Kerosene Combustion and Emissions In Dici Enginesmentioning

confidence: 91%

Section: Kerosene Combustion In Non-optical Enginesmentioning

confidence: 99%

Section: Kerosene Combustion In Non-optical Enginesmentioning

confidence: 99%

Section: Kerosene Combustion In Non-optical Enginesmentioning

confidence: 99%

See 2 more Smart Citations

From fundamental study to practical application of kerosene in compression ignition engines: An experimental and modeling review

Tay

Zhao

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…It was observed that maximum pressure rise rates, ignition delays, and premixed burn fractions were consistent between diesel and jet fuel with similar cetane numbers, and that the fuel cetane number was a dominant property in determining pressure rise rate. Jayakumar et al investigated the effect of the fuel cetane number using a set of four test fuels including ULSD with a cetane number of 45, Fischer–Tropsch synthetic paraffinic kerosene (FT-SPK) with a cetane number of 61, and two blends of JP-8 with cetane numbers of 25 and 49 . It was found that the fuel cetane number was a dominant property in the chemical delay period of ignition, and that fuels with higher cetane numbers are less sensitive to changes in boost pressure.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Cetane Number on Jet Fuel Spray Ignition at High-Temperature and -Pressure Conditions

et al. 2020

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This study investigates the impact of the fuel cetane number on the ignition and combustion dynamics of a high-pressure jet fuel spray under realistic diesel engine conditions. Under the desirable single-fuel concept for U.S. military applications, jet fuels would be used in traditional diesel engines. However, there is no cetane specification for such fuels, and substantial variation has been observed. To better understand the ignition and combustion dynamics of jet fuels subjected to diesel conditions, a series of test fuels have been constructed with varying cetane numbers between 30 and 55. Schlieren and chemiluminescence imaging were performed on the ignition process of four cetane number fuels, 30, 40, 50, and 55, at three ambient pressure conditions 4, 6, and 8 MPa. Fuel breakdown prior to ignition is tracked, and the size of the ignition kernel is extracted from the Schlieren imaging. Hydroxyl radical (OH) chemiluminescence intensity is used to estimate the heat release rate. Ignition and initial fuel breakdown delay from ignition were found to typically decrease with the increasing cetane number. The decrease in ignition delay is smaller at higher ambient pressures. Early timescale kernel growth was found to be dominated by the cetane number with a higher cetane number leading to faster kernel growth. Growth at later timescales is determined by injection pressure. The effect of cetane number decreases with increasing ambient pressure. The estimated heat release rate from OH chemiluminescence shows increasing heat release with the increasing cetane number at 4 MPa ambient, but there is no clear relationship at higher pressures.

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The effect of low reactivity fuels on the dual fuel mode compression ignition engine with exergy and soot analyses

Krishnamoorthi

Sreedhara

Duvvuri³

2021

Fuel

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Effect of Intake Pressure and Temperature on the Auto-Ignition of Fuels with Different Cetane Number and Volatility

Cited by 12 publications

References 19 publications

From fundamental study to practical application of kerosene in compression ignition engines: An experimental and modeling review

From fundamental study to practical application of kerosene in compression ignition engines: An experimental and modeling review

Effect of the Cetane Number on Jet Fuel Spray Ignition at High-Temperature and -Pressure Conditions

The effect of low reactivity fuels on the dual fuel mode compression ignition engine with exergy and soot analyses

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