Characteristics of Impingement Diesel SPray Adhesion on a Flat Wall
Many researchers since last decade have been looking forward to improving diesel engine performance through keeping low harmful emission. The aim of this study was to clarify the fundamental characteristics of nonevaporated impinging spray and adhesion behavior of fuel by measuring the adhering fuel mass on a wall. In this study, a fuel injection system, a high pressure vessel and an image processing unit for impingement spray were used. Experimental investigations were carried out with various injection pressures from 40 MPa to 170 MPa and ambient pressures from 0.1 MPa to 4.0 MPa. The impingement distances were set from 30 mm to 90 mm. The results showed the adhered fuel mass was affected by impingement distances. The adhered mass ratio was inversely proportional to injection pressure. At higher ambient pressure and higher the injection pressure, adhered mass fuel tended to decrease. Adhered fuel mass ratio had the potential to decline after reaching its peak when impingement velocity decreased beyond a critical velocity.
H. Kuniyoshi, H. Tanabe, G.T. Sato and H. Fujimoto, “Investigation on the Characteristics of Diesel Fuel Spray”, SAE paper, No. 800968, pp. 1-19, 1980.
M. Arai, M. Tabata, H. Hiroyasu and M. Shimizu, “Disintegrating Process and Spray Characterization of Fuel Jet Injected by A Diesel nozzle”, SAE paper, No. 840275, pp. 1-14, 1984.
T. Minami, I. Yamaguchi, M. Shintani, K. Tsujimura and T. Suzuki,
“Analysis of Fuel Spray Characteristic and Combustions Phenomena
under High Pressure Fuel Injection”, SAE paper, No. 900438, pp. 1-12,
H. Hiroyasu and M. Arai, “Structures of Fuel Sprays in Diesel Engines”, SAE paper, No. 900475, pp. 1-12, 1990.
H. Takahashi, H. Yanagisawa, S. Shiga, T. Karasawa and H. Nakamura, “Analysis of High Pressure Diesel Spray formation in the Early Stage of Injection”, Proc. of ICLASS 1994, pp. 262-269
M. Arai and K. Amagai, “Experimental Study on a Diesel Spray of Multi-Stage Injection”, Proc. of International Symposium COMODIA, pp. 219-224, 1994.
G.J. Smallwood and O.L. Gulder, “Views on the structure of Transient Diesel Sprays”, Atomization and Spray, Vol. 10, pp. 355-386, 2000.
T. Chiba, M. Saito, K. Amagai and M. Arai, “Characteristic of
Interimpingement Diesel Spray”, Atomization and Spray, Vol. 12(4), pp.431-449, 2002.
E. Delacourt, , B. Desmetand, B. Besson, “Characterisation of Very High Pressure Diesel Sprays Using Digital Imaging Techniques”, Fuel, Vol. 84, pp. 859-867, 2005.
K. Nishida, J. Gao, T. Manabe, and Y. Zhang, “Spray and mixture
properties of evaporating fuel spray injected by hole-type direct injection diesel injector”, Int. J. Engine Res. Vol. 9, pp. 347-360, 2008.
T. Ohta, T. Furuhata, M. Saito, and M. Arai, “Behavior of Diesel Free Spray in High Ambient Pressure Conditions”, Proc. of ILASS-Asia 2008, pp. 15-20, 2008.
Y. Manaka, T. Ohta, M. Saito, T. Furuhata and M. Arai, “Effect of High Ambient Pressure on Behavior and Structure of Diesel Spray”, Proc. of ICLASS 2009, pp. 1-6, 2009.
L. C. Goldsworthy, C. Bong and P. A. Brandner, “Measurements of
Diesel spray dynamics and the influence of fuel viscosity using PIV and
shadowgraphy”, Atomization and Spray, Vol. 21(2), pp. 167-178, 2011.
Y. Zama, W. Ochiai, T. Furuhata and M. Arai, “Study on Behavior of Diesel Spray under High Ambient Density Condition”, Proc. of ILASSAsia 2011, pp. 1-8, 2011.
M. Boot, E. Rijk, C. Luijten, B. Somers and B. Albrecht, “Spray
impingement in the early direct injection premixed charge compression
ignition regime”, SAE Technical Paper, 2010-01-1501, 2010.
M. Han, D.N. Assanis and S.V. Bohac, “Sources of Hydrocarbon Emissions from Low-Temperature Premixed Compression Ignition Combustion from a Common Rail Direct Injection Diesel Engine”, Combustion Science and Technology, Vol. 181, No. 3, pp. 496–517, Feb. 2009.
M. Arai, “Physics behind diesel spray characteristics and Its Combustion”, Proc. Engine Combustion Process, Current Problems and Modern Techniques, 11th Congress, Ludwingsburg, Germany, pp. 417-436, 2013.
H. Tsunemoto and H. Ishitani, “The Behavior of Impinged Fuel Sprays on Simulated Combustion Chamber Walls in Direction Injection Diesel Engine”, JSAE Rev., Vol. 3, pp. 9-14, 1982.
S.W. Park and C.S. Lee, “Macroscopic and Microscopic characteristic of a fuel spray impinged on the wall”, Experiments in Fluids 37 Springer-Verlag, pp. 745-762, 2004.
K. Ko and M. Arai, “Diesel Spray Impinging on a Flat Wall, Part 1:
Characteristics of Adhered Fuel Film in an Impingement Diesel Spray”,
Atomization and Spray, Vol. 12(5&6), pp. 737-751, 2002.
N. Katsura, M. Saito, J. Senda and H. Fujimoto, “Characteristics of a Diesel Spray Impinging on A Flat Wall”, SAE paper, No. 890264, pp. 191-207, 1989.
C.X. Bai and A.D. Gosman, “Development of a methodology for spray impingement simulation”, SAE tech paper, No. 950283, 1995.
L. Randy, W.G. Vander, G.M. Berger and S.D. Mozes, “The combined influence of a rough surface and thin fluid film upon the splashing threshold and splash dynamics of a droplet impacting onto them”, Experiments in Fluids, pp. 23-32, 2006.
C.D. Stow and M.G. Hadfield, “An experimental investigation of fluid flow resulting from the impact of a water drop with an unyielding dry surface”, Proc R Soc Lond A, pp. 419-441, 1981.
J.D. Naber and R.D. Reitz, “Modeling spray/wall impingement”, SAE Paper, No. 880107, 1988.
C. Bai, H. Rusche and A. Gosman, “Modelling of gasoline spray
impingement”, Atomization and Sprays, pp. 1–28, 2002.
K. Ko and M. Arai, “Diesel Spray Impinging on a Flat Wall, Part 2: Volume and Average air-fuel ratio of an Impingement Diesel Spray”, Atomization and Spray, Vol. 12(5&6), pp. 753-768, 2002.
K. Ko and M. Arai, “The Characteristics of Post Impingement Diesel Spray, Part 1: Penetration and Volume”, Atomization and Spray, Vol. 12(4), pp. 403-417, 2002.
K. Ko and M. Arai, “Diesel Spray and Adhering Fuel on an Impingement Wall”, SAE paper, No. 2002-01-1628, pp. 115-128, 2002.
J. Senda, M. Ohnishi, T. Takahashi, H. Fujimoto, A. Utsunomiya and M. Wakatabe, “Measurement and modeling on wall wetted fuel film profile and mixture preparation in intake port of SI engine”, SAE tech paper, No. 1999-01-0798, 1999.
A.K. Agarwal, D.K. Srivastava, A. Dhar, R.K. Maurya, P.C. Shukla and A.P. Singh, “Effect of fuel injection timing and pressure on combustion, emissions and performance characteristics of a single cylinder diesel engine”, Fuel, pp. 374-383, 2013.
M.Z. Akop, Y. Zama, T. Furuhata and M. Arai, “Experimental investigations on adhered fuel and impinging diesel spray normal to a wall”, Atomization and Sprays, Vol. 23, No.3, pp. 211–231, 2013.
M.Z. Akop, Y. Zama, T. Furuhata and M. Arai, “Characteristics of
adhesion diesel fuel on an impingement disk wall (Part 1: Effect of
impingement area and inclination angle of disk)”, Atomization and Sprays, Vol. 23, No. 8, pp. 725–744, 2013.
© Journal of Advanced Manufacturing Technology