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Comparison of Long-Chain Alcohol Blends, HVO and Diesel on Spray Characteristics, Ignition and Soot Formation
Technical Paper
2019-01-0018
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Spray characteristics of fossil Diesel fuel, hydrotreated vegetable oil (HVO) and two oxygenated fuel blends were studied to elucidate the combustion process. The fuels were studied in an optically accessible high-pressure/high-temperature chamber under non-combusting (623 K, 4.69 MPa) and combusting (823 K, 6.04 MPa) conditions. The fuel blends contained the long-chain alcohol 2-ethylhexanol (EH), HVO and either 20 vol.% Diesel or 7 vol.% rapeseed methyl ester (RME) and were designed to have a Diesel-like cetane number (CN). Injection pressures were set to 120 MPa and 180 MPa and the gas density was held constant at 26 kg/m3. Under non-combusting conditions, shadow imaging revealed the penetration length of the liquid and vapor phase of the spray. Under combusting conditions, the lift-off length and soot volume fraction were measured by simultaneously recording time-resolved two-dimensional laser extinction, flame luminosity and OH* chemiluminescence images. The ignition delay and start of soot formation were also recorded. Under non-combusting conditions at both injection pressures, the liquid penetration length was higher for the blends and HVO compared to Diesel, whereas the vapor penetration length was similar for all fuels. Under combusting conditions, the liquid penetration length of all the tested fuels was similar. Despite different CNs, the ignition delay was similar for Diesel and HVO. The EH blends had an increased ignition delay compared to Diesel, despite having the same CN. The lift-off length was found to be highest for the blend containing the highest share of EH. In agreement with previously published scaling relations, the lift-off length increased with increasing injection pressure. The soot volume fraction was found to be lower for the blends, in agreement with engine studies.
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Preuss, J., Munch, K., Andersson, M., and Denbratt, I., "Comparison of Long-Chain Alcohol Blends, HVO and Diesel on Spray Characteristics, Ignition and Soot Formation," SAE Technical Paper 2019-01-0018, 2019, https://doi.org/10.4271/2019-01-0018.Data Sets - Support Documents
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References
- Pickett , L.M. and Siebers , D.L. Fuel Effects on Soot Processes of Fuel Jets at DI Diesel Conditions SAE Technical Paper 2003-01-3080 2003 10.4271/2003-01-3080
- Siebers , D. Scaling Liquid-Phase Fuel Penetration in Diesel Sprays Based on Mixing-Limited Vaporization SAE Technical Paper 1999-01-0528 1999 10.4271/1999-01-0528
- Manin , J. , Skeen , S. , Pickett , L. , Kurtz , E. et al. Effects of Oxygenated Fuels on Combustion and Soot Formation/Oxidation Processes SAE Int. J. Fuels Lubr. 7 3 704 717 2014 10.4271/2014-01-2657
- Pickett , L. , Siebers , D. , and Idicheria , C. Relationship between Ignition Processes and the Lift-Off Length of Diesel Fuel Jets SAE Technical Paper 2005-01-3843 2005 10.4271/2005-01-3843
- Kook , S. and Pickett , L.M. Effect of Fuel Volatility and Ignition Quality on Combustion and Soot Formation at Fixed Premixing Conditions SAE Int. J. Engines 2 2 11 23 2010 10.4271/2009-01-2643
- Siebers , D.L. and Higgins , B. Flame Lift-Off on Direct-Injection Diesel Sprays under Quiescent Conditions SAE Technical Paper 2001-01-0530 2001 10.4271/2001-01-0530
- Payri , R. , Salvador , F. , Manin , J. , and Viera , A. Diesel Ignition Delay and Lift-Off Length through Different Methodologies Using a Multi-Hole Injector Appl Energy 162 541 550 2016 10.1016/j.apenergy.2015.10.118
- Mueller , C.J. and Martin , G.C. Effects of Oxygenated Compounds on Combustion and Soot Evolution in a DI Diesel Engine: Broadband Natural Luminosity Imaging SAE Technical Paper 2002-01-1631 2002 10.4271/2002-01-1631
- Siebers , D.L. , Higgins , B. , and Pickett , L. Flame Lift-Off on Direct-Injection Diesel Fuel Jets: Oxygen Concentration Effects SAE Technical Paper 2002-01-0890 2002 10.4271/2002-01-0890
- Musculus , M. , Dec , J. , and Tree , D. Effects of Fuel Parameters and Diffusion Flame Lift-Off on Soot Formation in a Heavy-Duty DI Diesel Engine SAE Technical Paper 2002-01-0889 2002 10.4271/2002-01-0889
- Pepiot-Desjardins , P. , Pitsch , H. , Malhotra , R. , Kirby , S.R. et al. Structural Group Analysis for Soot Reduction Tendency of Oxygenated Fuels Combustion and Flame 154 191 205 2008 10.1016/j.combustflame.2008.03.017
- Janssen , A.J. , Kremer , F.W. , Baron , J.H. , Muether , M. et al. Tailor-Made Fuels from Biomass for Homogeneous Low-Temperature Diesel Combustion Energy and Fuels 25 4734 4744 2011 10.1021/ef2010139
- Miyamoto , N. , Ogawa , H. , and Nabi , M.N. Approaches of Extremely Low Emissions and Efficient Diesel Combustion with Oxygenated Fuels Int J Engine Res 2000 10.1243/1468087001545272
- Du , C. , Andersson , M. , and Andersson , S. The Influence of Ethanol Blending in Diesel Fuel on the Spray and Spray Combustion Characteristics SAE Int. J. Fuels Lubr. 7 3 823 832 2014 10.4271/2014-01-2755
- Palmer , J. , Ramesh , M. , Kirsch , V. , Reddemann , M. et al. Spray Analysis of C8H18O Fuel Blends Using High-Speed Schlieren Imaging and Mie Scattering SAE Technical Paper 2015-24-2478 2015 10.4271/2015-24-2478
- Pastor , J.V. , García-Oliver , J.M. , Nerva , J.G. , and Giménez , B. Fuel Effect on the Liquid-Phase Penetration of an Evaporating Spray under Transient Diesel-like Conditions Fuel 90 3369 3381 2011 10.1016/j.fuel.2011.05.006
- Canaan , R.E. , Dec , J.E. , Green , R.M. , and Daly , D.T. The Influence of Fuel Volatility on the Liquid-Phase Fuel Penetration in a Heavy-Duty D.I. Diesel Engine SAE Technical Paper 980510 1998 10.4271/980510
- Siebers , D.L. Liquid-Phase Fuel Penetration in Diesel Sprays SAE Technical Paper 980809 1998 10.4271/980809
- Munch , K. and Zhang , T. A Comparison of Drop-in Diesel Fuel Blends Containing Heavy Alcohols Considering both Engine Properties and Global Warming Potentials SAE Technical Paper 2016-01-2254 2016 10.4271/2016-01-2254
- Neste Oil 2014
- Aatola , H. , Larmi , M. , Sarjovaara , T. , and Mikkonen , S. Hydrotreated Vegetable Oil (HVO) as a Renewable Diesel Fuel: Trade-Off between NOx, Particulate Emission, and Fuel Consumption of a Heavy Duty Engine SAE Technical Paper 2008-01-2500 2008 10.4271/2008-01-2500
- Hartikka , T. , Kuronen , M. , and Kiiski , U. Technical Performance of HVO (Hydrotreated Vegetable Oil) in Diesel Engines SAE Technical Paper 2012-01-1585 2012 10.4271/2012-01-1585
- Lapuerta , M. , Villajos , M. , Agudelo , J.R. , and Boehman , A.L. Key Properties and Blending Strategies of Hydrotreated Vegetable Oil as Biofuel for Diesel Engines Fuel Process Technology 92 2406 2411 2011 10.1016/j.fuproc.2011.09.003
- Preuß , J. , Munch , K. , and Denbratt , I. Performance and Emissions of Long-Chain Alcohols as Drop-in Fuels for Heavy Duty Compression Ignition Engines Fuel 216 890 897 2018 10.1016/j.fuel.2017.11.122
- Andersson J. , Athanasios M. , Giechaskiel B. , Carriero M. et al. 2010 10.2788/31407
- Kittelson , D. and Kraft , M. Particle Formation and Models in Internal Combustion Engines Encycl. Automot. Eng. 2014 10.1002/9781118354179.auto161
- Du , C. , Andersson , M. , and Andersson , S. Effects of Nozzle Geometry on the Characteristics of an Evaporating Diesel Spray SAE Int. J. Fuels Lubr. 9 3 493 513 2016 10.4271/2016-01-2197
- Du , C. , Andersson , S. , and Andersson , M. Two-Dimensional Measurements of Soot in a Turbulent Diffusion Diesel Flame: The Effects of Injection Pressure, Nozzle Orifice Diameter, and Gas Density Combust Sci Technol 1659 1688 2018 10.1080/00102202.2018.1461850
- Ochoterena , R. High Speed Shadowgraph and Diffraction Based Imaging for Spray Characterisation and Combustion Studies SAE Technical Paper 2009-24-0034 2009 10.4271/2009-24-0034
- Thomson , K.A. , Johnson , M.R. , Snelling , D.R. , and Smallwood , G.J. Diffuse-Light Two-Dimensional Line-of-Sight Attenuation for Soot Concentration Measurements Appl Opt 47 694 703 2008 10.1364/AO.47.000694
- Maes , N. , Meijer , M. , Dam , N. , Somers , B. et al. Characterization of Spray a Flame Structure for Parametric Variations in ECN Constant-Volume Vessels Using Chemiluminescence and Laser-Induced Fluorescence Combustion and Flame 174 138 151 2016 10.1016/j.combustflame.2016.09.005
- Kook , S. and Pickett , L.M. Liquid Length and Vapor Penetration of Conventional, Fischer-Tropsch, Coal-Derived, and Surrogate Fuel Sprays at High-Temperature and High-Pressure Ambient Conditions Fuel 93 539 548 2012 10.1016/j.fuel.2011.10.004
- Kook , S. and Pickett , L.M. Soot Volume Fraction and Morphology of Conventional, Fischer-Tropsch, Coal-Derived, and Surrogate Fuel at Diesel Conditions SAE Int. J. Fuels Lubr. 5 2 647 664 2012 10.4271/2012-01-0678
- Pickett , L.M. and Siebers , D.L. Soot in Diesel Fuel Jets: Effects of Ambient Temperature, Ambient Density, and Injection Pressure Combustion and Flame 138 114 135 2004 10.1016/j.combustflame.2004.04.006
- Naber , J. and Siebers , D.L. Effects of Gas Density and Vaporization on Penetration and Dispersion of Diesel Sprays SAE Technical Paper 960034 1996 10.4271/960034
- Yon , J. , Lemaire , R. , Therssen , E. , Desgroux , P. et al. Examination of Wavelength Dependent Soot Optical Properties of Diesel and Diesel/Rapeseed Methyl Ester Mixture by Extinction Spectra Analysis and LII Measurements Appl Phys B Lasers Opt 104 253 271 2011 10.1007/s00340-011-4416-4
- Álvarez , R. , Rodero , A. , and Quintero , M. An Abel Inversion Method for Radially Resolved Measurements in the Axial Injection Torch Spectrochimica Acta Part B: Atomic Spectroscopy 57 1665 1680 2002 10.1016/S0584-8547(02)00087-3
- Siebers , D.L. Ignition Delay Characteristics of Alternative Diesel Fuels: Implications on Cetane Number SAE Technical Paper 852102 1985 10.4271/852102
- Bhardwaj , O.P. , Lüers , B. , Holderbaum , B. , Koerfer , T. et al. Utilization of HVO Fuel Properties in a High Efficiency Combustion System: Part 2: Relationship of Soot Characteristics with its Oxidation Behavior in DPF SAE Int. J. Fuels Lubr. 7 3 979 994 2014 10.4271/2014-01-2846
- Lequien , G. , Skeen , S. , Manin , J. , Pickett , L.M. et al. Ignition Quality Effects on Lift-Off Stabilization of Synthetic Fuels SAE Int. J. Engines 8 2 625 634 2015 10.4271/2015-01-0792