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Strategies to Gain the Loss in Power in a Military Diesel Engine Using JP-8 Instead of ULSD
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 14, 2020 by SAE International in United States
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The Department of Defense (DOD) has adopted the use of JP-8 under the “single battlefield fuel” policy. Fuel properties of JP-8 which are different from ULSD include cetane number, density, heating value and compressibility (Bulk modulus). While JP8 has advantages compared to ULSD, related to storage, combustion and lower soot emissions, its use cause a drop in the peak power in some military diesel engines. The engines that has loss in power use the Hydraulically actuated Electronic Unit Injection (HEUI) fuel system. The paper explains in details the operation of HEUI including fuel delivery into the injector and its compression to the high injection pressure before its delivery in the combustion chamber. The effect of fuel compressibility on the volume of the fuel that is injected into the combustion chamber is explained in details. A fuel such as JP-8 which has a lower Bulk modulus is compressed to a smaller volume than ULSD which has a higher Bulk modulus before its delivery in the combustion chamber, and this is the main reason for the drop in power explained earlier. Experiments conducted on a CAT C7 engine demonstrated the loss in peak power associated with JP-8 over the whole speed range. Different approaches in the injection process have been discussed to gain the loss in peak power.
CitationRaut, P., Atre, O., Trivedi, M., and Henein, N., "Strategies to Gain the Loss in Power in a Military Diesel Engine Using JP-8 Instead of ULSD," SAE Technical Paper 2020-01-0804, 2020.
Data Sets - Support Documents
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- Lenhert, D.B. , “The Oxidation of JP-8 and Its Surrogates in the Low and Intermediate Temperature Regime,” PhD thesis, Mechanical Engineering, Drexel University, 2004.
- Stucker, J.P., Schank, J.F., and Dombey-Moore, B. , “Assessment of DoD Fuel Standardization Policies,” 19950210006, 1994.
- Muzzell, P., Sattler, E., Terry, A., McKay, B. et al. , “Properties of Fischer-Tropsch (FT) Blends for Use in Military Equipment,” SAE Technical Paper 2006-01-0702, 2006, https://doi.org/10.4271/2006-01-0702.
- Covington, A. , “The Investigation of Combustion and Emissions of JP8 Fuel in an Auxiliary Power Unit,” Georgia Southern University, 2011.
- TARDEC , “JP-8 The Single Fuel Forward: An Information Compendium (No. May 2001): U.S. Army Tank-Automotive and Armaments Command Research, Development, and Engineering Center (TARDEC) Report,” 2001.
- Siemiatycki, J., Gerin, M., Stewart, P., Nadon, L. et al. , “Associations between Several Sites of Cancer and Ten Types of Exhaust and Combustion Products,” Scand J Work Environ Health 14:79-90, 1998.
- Chevron , “Aviation Fuels Technical Review,” 2006.
- Kahandawala, M.S.P., DeWitt, M.J., Corporan, E., and Sidhu, S.S. , “Ignition and Emission Characteristics of Surrogate and Practical Jet Fuels,” Energy & Fuels 22(6):3673-3679, 2008.
- Alkhayat, S., Trivedi, M., Henein, N., Mukhopadhyay, S., and Schihl, P. , “Experimental Validation of a Three-Component Surrogate for Sasol-Isoparaffinic Kerosene in Single Cylinder Diesel Engine and Ignition Quality Tester,” ASME. J. Eng. Gas Turbines Power 140(8):082801, August 2018, https://doi.org/10.1115/1.4039805.
- Schmitigal, J. and Tebbe, J. , “JP-8 and Other Military Fuels,” U.S. Army TARDEC, December 2011.
- Coldren, D., Schuricht, S., and Smith, R. , “Hydraulic Electronic Unit Injector with Rate Shaping Capability,” SAE Technical Paper 2003-01-1384, 2003, https://doi.org/10.4271/2003-01-1384.
- “Handbook for Aviation Fuel Properties,” Coordinating Research Council, Inc., 1983.
- Boban, D., Nikoli, B., Kegl, S., Markovi, D., and Melanija, S.M. , “Determining the Speed of Sound, Density, and Bulk Modulus of Rapeseed Oil, Biodiesel, and Diesel Fuel,” 2012.
- George, R., Badawy, T., and Henein, N. , “Experimental Study for the Effect of Fuel Properties on the Ion Current, Combustion, and Emission in a High Speed Diesel Engine,” SAE Technical Paper 2014-01-1263, 2014, https://doi.org/10.4271/2014-01-1263.
- Pickett, L. and Hoogterp, L. , “Fundamental Spray and Combustion Measurements of JP-8 at Diesel Conditions,” SAE Int. J. Commer. Veh. 1(1):108-118, 2008, doi:10.4271/2008-01-1083.
- Schihl, P., Decker-Hoogterp, L., Pence, K., and Leonard, K. , “On the Premixed Phase Combustion Behavior of JP-8 in a Military Relevant Single Cylinder Diesel Engine,” SAE Int. J. Engines 4(1):27-37, 2011, doi:10.4271/2011-01-0123.
- Lapuerta, M., Agudelo, J.R., Matthew, P., and André, L. , Boehman Energy & Fuels 26(2):1336-1343, 2012, doi:10.1021/ef201608g.
- Nargunde, J., Jayakumar, C., Sinha, A., Acharya, K. et al. , “Comparison between Combustion, Performance and Emission Characteristics of JP-8 and Ultra Low Sulfur Diesel Fuel in a Single Cylinder Diesel Engine,” SAE Technical Paper 2010-01-1123, 2010, https://doi.org/10.4271/2010-01-1123.
- Henein, N.A., Badawy, T., Rai, N., and Bryzik, W. , “Ion Current, Combustion and Emission Characteristics in an Automotive Common Rail Diesel Engine,” ASME J. Eng. Gas Turbine Power 134(4):042801, 1-042807, 2012.
- Henein, N., Bryzik, W., Abdel-Rehim, A., and Gupta, A. , “Characteristics of Ion Current Signals in Compression Ignition and Spark Ignition Engines,” SAE Int. J. Engines 3(1):260-281, 2010, https://doi.org/10.4271/2010-01-0567.
- Fadi Estefanous Wayne State University Dissertations, January 1, 2011, “Ionization in Diesel Combustion: Mechanism, New Instrumentation and Engine Applications,” Wayne State University, 2011.
- Raut, P. , “Combustion and Ionization in CAT C7 Diesel Engine Operating on ULSD and JP-8,” Master thesis, Wayne State University, 2015.