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Assessment of the Ignition and Lift-off Characteristics of a Diesel Spray with a Transient Spreading Angle
Technical Paper
2015-01-1828
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Multi-hole diesel fuel injectors have shown significant transients in spreading angle during injections, different than past fundamental research using single-hole injectors. We investigated the effect of a this transient spreading angle on combustion parameters such as ignition delay and lift-off length by comparing a three-hole nozzle (Spray B) and single-hole nozzle (Spray A) with holes of the same size and shape as targets for the Engine Combustion Network (ECN). With the temperature distribution for a target plume of Spray B characterized extensively in a constant-volume combustion chamber, the ignition delay and lift-off length were measured and compared. Results show that the lift-off length of Spray B increases and grows by approximately 1.5 mm after the initial stages of ignition, in an opposite trend compared to Spray A where the lift-off length decreases with time. The Spray B lift-off length increase is consistent with a transition to from wide to narrow spreading angle that would tend to increase lift-off length, but lift-off is stabilized for a substantial period of time by a wide annular region of combustion products formed when the plume was initially wide.
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Jung, Y., Manin, J., Skeen, S., and Pickett, L., "Assessment of the Ignition and Lift-off Characteristics of a Diesel Spray with a Transient Spreading Angle," SAE Technical Paper 2015-01-1828, 2015, https://doi.org/10.4271/2015-01-1828.Also In
References
- Meijer M. , Somers B. , Johnson J. , Naber J. , Lee S.-Y. , Malbec L.-M. , Bruneaux G. , Pickett L. M. , Bardi M. , Payri R. , and Bazyn T. Engine Combustion Network (ECN): Characterization and Comparison of Boundary Conditions for Different Combustion Vessels Atomization and Sprays 22 9 777 806 2012
- Musculus M. P. B. , Pickett L. M. , and Kaiser S. A. Fundamentals Encylopedia of Automotive Engineering John Wiley & Sons, Ltd. 2014
- Engine Combustion Network http://www.sandia.gov/ecn
- Naber J. D. and Siebers D. L. Effects of gas density and vaporization on penetration and dispersion of diesel sprays SAE Transactions 105 3 82 111 1996 10.4271/960034
- Siebers D. L. Scaling liquid-phase fuel penetration in diesel sprays based on mixing-limited vaporization SAE Transactions 108 3 703 728 1999 10.4271/1999-01-0528
- Siebers D. L. and Higgins B. S. Flame lift-off on direct-injection diesel sprays under quiescent conditions SAE Transactions 110 3 400 421 2001 10.4271/2001-01-0530
- Pickett L. M. , Siebers D. L. , and Idicheria C. A. Relationship between ignition processes and the lift-off length of diesel fuel jets SAE Transactions 114 3 1714 1731 2005 10.4271/2005-01-3843
- Pickett L. M. and Siebers D. L. Soot in diesel fuel jets: effects of ambient temperature, ambient density, and injection pressure Combust.Flame 138 114 135 2004
- Pickett , L. , Genzale , C. , Bruneaux , G. , Malbec , L. et al. Comparison of Diesel Spray Combustion in Different High-Temperature, High-Pressure Facilities SAE Int. J. Engine 3 2 156 181 2010 10.4271/2010-01-2106
- Musculus M. P. B. Effects of the in-cylinder environment on diffusion flame lift-off in a DI diesel engine SAE Transactions 112 3 314 337 2003 10.4271/2003-01-0074
- Polonowski , C. , Mueller , C. , Gehrke , C. , Bazyn , T. et al. An Experimental Investigation of Low-Soot and Soot-Free Combustion Strategies in a Heavy-Duty, Single-Cylinder, Direct-Injection, Optical Diesel Egine SAE Int. J. Fuel Lubr. 5 1 51 77 2012 10.4271/2011-01-1812
- Persson Helena , Andersson Öivind , and Egnell Rolf Fuel effects on flame lift-off under diesel conditions Combustion and Flame 158 1 91 97 2011
- Pickett L. M. , Kook S. , Persson H. , and Andersson Öivind Diesel fuel jet lift-off stabilization in the presence of laser-induced plasma ignition Proc.Combust.Inst. 32 2 2793 2800 2009
- Juneja H. , Ra Y. , and Reitz R. D. Optimization of Injection Rate Shape using Active Control of Fuel Injection SAE Technical Paper 2004-01-0530 2004 10.4271/2004-01-0530
- Jung Y. , Manin J. , Skeen S. and Pickett L. M. Measurement of Liquid and Vapor Penetration of Diesel Sprays with a Variation in Spreading Angle SAE Technical Paper 2015-01-0946 2015 10.4271/2015-01-0946
- Kastengren A. L. , Tilocco F. Z. , Powell C. F. , Manin J. et al. Engine Combustion Network (Ecn): Measurements of Nozzle Geometry and Hydraulic Behavior Atomization Spray 22 1011 1052 2012
- Spray B Nozzle Geometry http://www.sandia.gov/ecn/cvdata/targetCondition/SpBNozGeo.php
- Lillo P. M. , Pickett L. M. , Persson H. , Andersson O. et al. Diesel Spray Ignition Detection and Spatial/Temporal Correction SAE Int. J. Engines 5 1330 1346 2012 10.4271/2012-01-1239
- High-speed movies of Spray B chemiluminescence http://www.sandia.gov/ecn/pub-links/yj002/sprayB.php
- Skeen , S. , Manin , J. , and Pickett , L. Visualization of Ignition Processes in High-Pressure Sprays with Multiple Injections of n-Dodecane SAE Int. J. Engine 8 2 696 715 2015 10.4271/2015-01-0799