Effect of the Cetane Number Improving Additive on Combustion, Performance, and Emissions of a DI Diesel Engine Operating on JP-8 Fuel
Publication: Journal of Energy Engineering
Volume 141, Issue 2
Abstract
The article presents the bench test results of a fully instrumented, four cylinder, naturally aspirated, (60 kW) direct injection (DI) diesel engine running on the normal (class C) diesel fuel (DF) and aviation-turbine (JP-8) fuel. The article addresses changes in engine performance and exhaust emissions resulting from the replacement of commercial diesel fuel with JP-8 fuel. Investigation and comparison of the effects of the cetane number improving additive on the autoignition delay, maximum heat release rate, maximum in-cylinder pressure, performance efficiency of an engine, and exhaust emissions were provided for sound analysis of the test results. The series of engine tests were conducted running alternately on the normal diesel fuel, JP-8 fuel, and JP-8 treated with 0.04, 0.08, 0.12, 0.16, and 0.24 vol% of 2-ethylhexyl nitrate. Studies on the operating characteristics of an engine were carried out for 15–10%, 50 and 100% loads, and the two ranges of speed: 1,400 revolutions per minute (rpm), at which maximum torque occurs, and a rated speed of 2,200 rpm. Use of JP-8 fuel suggested fuel energy savings and ecological benefits for medium (50%) and full (100%) loads mainly when running at a low speed of 1,400 rpm. Autoignition delay, maximum heat release rate, maximum in-cylinder pressure, and nitrogen oxide () emissions decreased; however, the carbon monoxide (CO), hydrocarbon (HC) emissions, and the smoke opacity of the exhaust increased to a certain extent responding to the addition of 2-ethylhexyl nitrate to the JP-8 fuel. The brake-specific fuel consumption and brake thermal efficiency of a fully (100%) loaded engine changed little when running on treated JP-8-12 fuel at a rated speed of 2,200 rpm. Analysis of the test results revealed that the cetane number improving additive can be considered as an effective but not the only measure to be applied for an intended use of aviation-turbine JP-8 fuel in ground-based diesel engines.
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References
Arkoudeas, P., et al. (2003). “Study of using IP-8 aviation fuel and biodiesel in CI engines.” Energy Convers. Manage., 44(7), 1013–1025.
ASTM. (2001). “Standard test method for estimation of net heat of combustion of aviation fuels.” D 4529-01, West Conshohocken, PA.
ASTM. (2005). “Standard test method for flash point by tag closed tester.” D 56-05, West Conshohocken, PA.
ASTM. (2009a). “Standard specification for diesel fuel oils.”, West Conshohocken, PA.
ASTM. (2009b). “Standard specification for biodiesel fuel blend sock (B100) for middle distillate fuels.”, West Conshohocken, PA.
ASTM. (2010). “Standard test method for hydrocarbon types in liquid petroleum products by Fluorescent indicator adsorption.” D 1319-10, West Conshohocken, PA.
ASTM. (2011a). “Standard test method for acidity in aviation turbine fuel.” D 3242-11, West Conshohocken, PA.
ASTM. (2011b). “Standard test method for density, relative density, and API gravity of liquids by digital density meter.” D 4052-11, West Conshohocken, PA.
ASTM. (2012a). “Standard test method for kinematic viscosity of transparent and opaque liquids (and calculation of dynamic viscosity).” D 445-12, West Conshohocken, PA.
ASTM. (2012b). “Standard test method for determination of total sulfur in light hydrocarbons, spark ignition engine fuel, diesel engine fuel, and engine oil by ultraviolet fluorescence.” D 5453-12, West Conshohocken, PA.
ASTM. (2013). “Standard specification for aviation turbine fuels.”, Book of standards, Vol. 05.01, West Conshohocken, PA.
AVL Indicom [Computer software]. AVL List, Graz, Austria.
Bezaire, N., Wadumesthrige, K., Ng, K. Y. S., and Salley, S. O. (2010). “Limitations of the use of cetane index for alternative compression ignition engine fuels.” Fuel, 89(12), 3807–3813.
Blakey, S., Rye, L., and Wilson, C. W. (2011). “Aviation gas turbine alternative fuels: A review.” Proc. Combust. Inst., 33(2), 2863–2885.
British standard. (2002). “Turbine fuel, aviation kerosine type, containing fuel system icing inhibitor.” DEF STAN 91-87, Defence Procurement Agency, Glasgow, U.K.
Cheng, A. S., Upatnieks, A., and Mueller, C. J. (2007). “Investigation of fuel effects on dilute, mixing-controlled combustion in an optical direct-injection diesel engine.” Energy Fuel, 21(4), 1989–2002.
Chong, C. T., and Hochgreb, S. (2011). “Measurements of laminar flame speeds of liquid fuels: Jet-A1, diesel, palm methyl esters and blends using particle imaging velocimetry (PIV).” Proc. Combust. Inst., 33(1), 979–986.
Chong, C. T., and Hochgreb, S. (2014). “Spray flame structure of rapeseed biodiesel and jet-A1 fuel.” Fuel, 115(1), 551–558.
Church, G. J. (1990). NATO logistics handbook, SNLC Secretariat International Staff, Defence Policy and Planning Div., Brussels, Belgium, 219.
EU Directive 2009/28/EC. (2009). “Directive 2009/28/EC of the European Parliament and of the Council of 23 April 2009 on the promotion of the use oil energy from renewable sources.” Brussels, Belgium.
European Economic and Social Committee. (2009). “European demand for oil must be reduced by over 50% by 2050!” CES/09/1, 〈http://europa.eu/rapid/pressReleasesAction.do?reference=/CES/09/1〉 (Jan. 9, 2009).
European standard. (1994). “Petroleum products—Transparent and opaque liquids—Determination of kinematic viscosity and calculation of dynamic viscosity.” EN ISO 3104+AC: 1994.
European standard. (1998). “Petroleum products—Determination of the ignition quality of diesel fuels—Cetane engine method.” EN ISO 5165:1998.
European standard. (1999a). “Crude petroleum and petroleum products—Determination of density—Oscillating U-tube method.” EN ISO 12185:1999.
European standard. (1999b). “Petroleum products—Determination of carbon residue—Micro method.” EN ISO 10370:1999.
European standard. (2002). “Diesel and domestic heating fuels—Determination of cold filter plugging point.” EN ISO 116/AC:2002.
European standard. (2003a). “Determination of flash point—Pensky-Martens closed cup method.” EN ISO 2719:2003.
European standard. (2003b). “Fat and oil derivatives—Fatty Acid Methyl Esters (FAME)—Determination of iodine value.” EN 14111:2003.
European standard. (2004). “Petroleum products—Determination of sulphur content of automotive fuels—Ultraviolet fluorescence method.” EN ISO 20846:2004.
European standard. (2006a). “Determination of aromatic hydrocarbon types in middle distillates. High performance liquid chromatography method with refractive index detection.” BS EN 12916:2006.
European standard. (2006b). “Diesel fuel—Assessment of lubricity using the high-frequency reciprocating rig (HFRR)—Part 1: Test method.” EN ISO 12156-1:2006.
European standard. (2009a). “Automotive fuels—Fatty acid methyl esters (FAME) for diesel engines—Requirements and test methods.” EN 14214:2008+A1:2009.
European standard. (2009b). “Automotive fuels—Diesel—Requirements and test methods.” EN 590:2013.
European standard. (2011). “Petroleum products—Determination of distillation characteristics at atmospheric pressure.” EN ISO 3405:2011.
European standard. (2012). “Petroleum products—Fuels (class F)—Specifications of marine fuels.” EN ISO 8217:2012.
Fernandes, G., Fuschetto, J., Filipi, Z., Assanis, D., and Mckee, H. (2007). “Impact of military JP-8 fuel on heavy-duty diesel engine performance and emissions.” Proc. Inst. Mech. Eng. Part D J. Automobile Eng., 221(8), 957–970.
Giakoumis, E. G., Rakopoulos, C. D., and Rakopoulos, D. C. (2013). “Assessment of emissions during transient diesel engine operation with biodiesel blends.” J. Energy Eng., A4014004.
Graboski, M. S., and McCormick, R. L. (1998). “Combustion of fat and vegetable oil derived fuels in diesel engines.” Prog. Energy Combust. Sci., 24(2), 125–164.
Heywood, J. B. (1988). Internal combustion engine fundamentals, McGraw-Hill, Singapore, 930.
Hui, X., Kumar, K., Sung, C.-J., Edwards, T., and Gardner, D. (2012). “Experimental studies on the combustion characteristics of alternative jet fuels.” Fuel, 98(8), 176–182.
Knothe, G., Gerpen, J.-V., and Krohl, J. (2005). The biodiesel handbook, AOCS Press, Champaign, IL, 312.
Korres, D. M., Karonis, D., Lois, E., Linck, M. B., and Gupta, A. K. (2008). “Aviation fuel JP-5 and biodiesel on a diesel engine.” Fuel, 87(1), 70–78.
Kouremenos, D. A., Rakopoulos, C. D., Hountalas, D. T. (1998). “Experimental investigation of the performance and exhaust emissions of a swirl chamber diesel engine using JP-8 aviation fuel.” Energy Res., 21(12), 1173–1185.
Kumar, K., and Sung, C.-J. (2010a). “An experimental study of the autoignition characteristics of conventional jet fuel/oxidizer mixtures: Jet-A and JP-8.” Combust. Flame, 157(4), 676–685.
Kumar, K., and Sung, C.-J. (2010b). “A comparative experimental study of the autoignition characteristics of alternative and conventional jet fuel/oxidizer mixtures.” Fuel, 89(10), 2853–2863.
Labeckas, G., Slavinskas, S., and Vilutienė, V. (2012). “Combustion, performance and exhaust emissions of the diesel engine operating on jet fuel.” J. KONES Powertrain Transp., 19(1), 227–236.
Labeckas, G., Slavinskas, S., and Vilutienė, V. (2013). “Combustion, performance and emission characteristics of diesel engine operating on jet fuel treated with cetane improver.” Proc., 12th Int. Scientific Conf. “Engineering for Rural Development,” Vol. 12, Latvia Univ. of Agriculture (LAU), Latvia, Jelgava, 313–318.
Labeckas, G. S. (1987). “Some of the relationships between basic parameters of the fuel supply apparatus and the fuel injection and atomization characteristics.” Republican interdepartmental scientific technical journal internal combustion engines, Vol. 46, Higher School Publishing, Kharkov, 52–59 (in Russian).
Lee, J., and Bae, C. (2011). “Application of JP-8 in a heavy duty diesel engine.” Fuel, 90(5), 1762–1770.
Lee, J., Oh, H., and Bae, C. (2012). “Combustion process of JP-8 and fossil Diesel fuel in a heavy duty diesel engine using two-color thermometry.” Fuel, 102(12), 264–273.
Le Pera, M.-E. (2005). “The reality of the single-fuel concept.” Army logistician, 37(2), 40–43.
Myong, K., Suzuki, H., Senda, J., and Fujimoto, H. (2007). “Spray inner structure of evaporating multicomponent fuel.” Fuel, 87(2), 202–210.
Nygren, E., Aleklett, K., and Höök, M. (2009). “Aviation fuel and future oil production scenarios.” Energy Policy, 37(10), 4003–4010.
Pandey, A. K., and Nandgaonkar, M. R. (2010). “Performance, emission and pump wear analysis of JP-8 Fuel for military use on a 558 kW, CIDI diesel engine.” SAE Int. J. Fuels Lubr., 3(2), 238–245.
Papagiannakis, R. G., Kotsiopoulos, P. N., Hountalas, D. T., and Yfantis, E. (2006). “Single fuel research program comparative results of the use of JP-8 aviation fuel versus diesel fuel on a direct injection and indirect injection diesel engine.”.
Pulkrabek, W. W. (2009). Engineering fundamentals of the internal combustion engine, Vol. 07458, Prentice Hall, Upper Saddle River, NJ, 411.
Rakopoulos, C. D., Hountalas, D. T., Rakopoulos, D. C., and Levendis, Y. A. (2004). “Comparative environmental evaluation of JP-8 and diesel fuels burned in direct injection (DI) or indirect injection (IDI) diesel engines and in a laboratory furnace.” Energy Fuels, 18(5), 1302–1308.
Rakopoulos, C. D., Kyritsis, D. C., and Rakopoulos, D. C. (2014). “Special issue on innovative technologies on combustion of biofuels in engines: Issues and challenges.” J. Energy Eng., A2014001.
Rakopoulos, C. D., Rakopoulos, D. C., Giakoumis, E. G., and Dimaratos, A. M. (2010). “Investigation of the combustion of neat cottonseed oil or its neat bio-diesel in a HSDI diesel engine by experimental heat release and statistical analyses.” Fuel, 89(12), 3814–3826.
Rakopoulos, D. C., Rakopoulos, C. D., Giakoumis, E. G., Dimaratos, A. M. (2013a). “Studying combustion and cyclic irregularity of diethyl ether as supplement fuel in diesel engine.” Fuel, 109(7), 325–335.
Rakopoulos, D. C., Rakopoulos, C. D., Giakoumis, E. G., Dimaratos, A. M., and Kakaras, E. C. (2013b). “Comparative evaluation of two straight vegetable oils and their methyl ester biodiesels as fuel extenders in HDDI diesel engine: Performance and emissions.” J. Energy Eng., A4014001.
Rounce, P., Tsolakis, A., Rodrigues-Fernández, J., York, A. P. E., Cracknell, R. F., and Clark, R. H. (2009). “Diesel engine performance and emissions when first generation meets next generation biodiesel.”.
Salvatore, J. R. (2010). Significance of tests for petroleum products, 8th Ed., ASTM International, West Conshohocken, PA, 348.
Schihl, P., Hoogterp, L., and Pangilinan, H. (2006). “Assessment of JP-8 and DF-2 evaporation rate and cetane number differences on a military diesel engine.”.
Suryanarayanan, S., Janakiraman, V.-M., Sekar, J., Lakshmi, G., and Rao, N. (2007). “Prediction of cetane number of a biodiesel based on physical properties and a study of their influence on cetane number.”.
United States Military. (1999). “Turbine fuels aviation, kerosene types, NATO F-34 (JP-8), NATO F-35, and JP-8+100.”, Defense Quality and Standardization Office, Falls Church, VA.
Wang, H., and Oehlschlaeger, M-A. (2012). “Autoignition studies of conventional and Fisher-Tropsch jet fuels.” Fuel, 98(8), 249–258.
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Published In
Journal of Energy Engineering
Volume 141 • Issue 2 • June 2015
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© 2014 American Society of Civil Engineers.
History
Received: Apr 11, 2014
Accepted: Jul 1, 2014
Published online: Sep 3, 2014
Discussion open until: Feb 3, 2015
Published in print: Jun 1, 2015
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