Effect of Inlet Air Temperature on Auto-Ignition of Fuels With Different Cetane Number and Volatility

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

doi:10.1115/icef2011-60141

Cited by 5 publications

(6 citation statements)

References 22 publications

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“…All research ers agree on the start of injection (SOI) as the start of ID. However, several criteria have been used to define the end of ID or the start of combustion (SOC) [24][25][26][27][28][29][30][31][32]. In the current investiga tion, the definition of ID specified in ASTM D6890 [2] was used as shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

Effect of Cetane Improver on Autoignition Characteristics of Low Cetane Sasol IPK Using Ignition Quality Tester1

Zheng

Badawy

Henein

et al. 2014

Journal of Engineering for Gas Turbines and Power

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This paper investigates the effect of a cetane improver on the autoignition characteristics of Sasol IPK in the combustion chamber of the ignition quality tester (IQT). The fuel tested was Sasol IPK with a derived cetane number (DCN) of 31, treated with different percentages ofLubrizol 8090 cetane improver ranging from 0.1 to 0.4%. Tests were con ducted under steady state conditions at a constant charging pressure of 21 bar. The charge air temperature before fuel injection varied from 778 to 848 K. Accordingly, all the tests were conducted under a constant charge density. The rate of heat release was calculated and analyzed in detail, particularly during the autoignition period. In addi tion, the physical and chemical delay periods were determined by comparing the results o f two tests. The first was conducted with fuel injection into air according to ASTM stand ards where combustion occurred. In the second test, the fuel was injected into the cham ber charged with nitrogen. The physical delay is defined as the period of time from start o f injection (SOI) to point of inflection (POI), and the chemical delay is defined as the pe riod of time from POI to start of combustion (SOC). Both the physical and chemical delay periods were determined under different charge temperatures. The cetane improver was found to have an effect only on the chemical ID period. In addition, the effect of the ce tane improver on the apparent activation energy of the global combustion reactions was determined. The results showed a linear drop in the apparent activation energy with the increase in the percentage of the cetane improver. Moreover, the low temperature (LT) regimes were investigated and found to be presented in base fuel, as well as cetane improver treated fuels.

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Section: Methodsmentioning

confidence: 99%

Effect of Cetane Improver on Autoignition Characteristics of Low Cetane Sasol IPK Using Ignition Quality Tester1

Zheng

Badawy

Henein

et al. 2014

Journal of Engineering for Gas Turbines and Power

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“…53,54 Lower CN fuels generally gave a larger fraction of premixed burn. 136 Due to the higher volatility of kerosene, a near-stoichiometric fuel–air mixture was formed and NO x emissions increased significantly. 42,53 However, by using EGR and optimized injection strategies, NO x and soot trade-off was proven to be possible with minimal loss in efficiency.…”

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

confidence: 99%

“…[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%

See 1 more Smart Citation

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: Methodsmentioning

confidence: 99%

Effect of Cetane Improver on Autoignition Characteristics of Low Cetane Sasol IPK Using Ignition Quality Tester (IQT)

Zheng

Badawy

Henein

et al. 2013

Volume 2: Fuels; Numerical Simulation; Engine Design, Lubrication, and Applications

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This paper investigates the effect of a cetane improver on the autoignition characteristics of Sasol IPK in the combustion chamber of the Ignition Quality Tester (IQT). The fuel tested was Sasol IPK with a Derived Cetane Number (DCN) of 31, treated with different percentages of Lubrizol 8090 cetane improver ranging from 0.1% to 0.4%. Tests were conducted under steady state conditions at a constant charging pressure of 21 bar. The charge air temperature before fuel injection varied from 778 to 848 K. Accordingly, all the tests were conducted under a constant charge density. The rate of heat release was calculated and analyzed in details, particularly during the autoignition period.In addition, the physical and chemical delay periods were determined by comparing the results of two tests. The first was conducted with fuel injection into air according to ASTM standards where combustion occurred. In the second test, the fuel was injected into the chamber charged with nitrogen. The physical delay is defined as the period of time from start of injection (SOI) to point of inflection (POI), and the chemical delay is defined as the period of time from POI to start of combustion (SOC). Both the physical and chemical delay periods were determined under different charge temperatures. The cetane improver was found to have an effect only on the chemical ID period. In addition, the effect of the cetane improver on the apparent activation energy of the global combustion reactions was determined. The results showed a linear drop in the apparent activation energy with the increase in the percentage of the cetane improver. Moreover, the low temperature (LT) regimes were investigated and found to be presented in base fuel, as well as cetane improver treated fuels.

show abstract

Effect of Inlet Air Temperature on Auto-Ignition of Fuels With Different Cetane Number and Volatility

Cited by 5 publications

References 22 publications

Effect of Cetane Improver on Autoignition Characteristics of Low Cetane Sasol IPK Using Ignition Quality Tester1

Effect of Cetane Improver on Autoignition Characteristics of Low Cetane Sasol IPK Using Ignition Quality Tester1

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

Effect of Cetane Improver on Autoignition Characteristics of Low Cetane Sasol IPK Using Ignition Quality Tester (IQT)

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