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An Experimental Study on Steady Flash Boiling Spray Characteristics of DME/Diesel Blended fuel
Technical Paper
2010-01-0879
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Homogeneous charge compression ignition (HCCI) is a new combustion concept, which achieves high thermal efficiency and ultra-low emissions. In order to realize the HCCI combustion, a homogenous mixture preparation plays an important role in the HCCI engine concept. However, there are some problems for conventional diesel fuel to achieve a uniform mixture distribution in the cylinder because of its high viscosity and low volatility. This paper describes the effects of the DME addition on the spray behavior and atomization characteristics of diesel fuel. Pure diesel fuel, pure DME fuel and DME/diesel blended fuels with DME mass fraction of 25% and 50% were used to evaluate the effects of the DME concentration on the macroscopic and microscopic structure of the steady spray. The macroscopic structure of the spray, such as the spray pattern and spray cone angle were recorded by a digital camera at the nozzle tip, and microscopic structure of the spray, such as droplet size distribution and sauter mean diameter (SMD) were measured by a laser size analyzer (LSA). The experimental results reveal that the DME concentration in the DME/diesel blended fuels had significant influence on both the macroscopic and microscopic of the spray due to the micro explosion and flash boiling function. The spray cone angle of blended fuel was increased with the increase of DME concentration. At the centerline of the spray, the SMD decreased with the increase of the DME concentration, and it decreased rapidly near the nozzle tip. On the other hand, it can be seen that more small droplets are distributed for DME/diesel blended fuels than that for pure diesel fuel. From the results, it can be concluded that it is a novel way to use DME addition into diesel fuel to enhance the fuel/air mixture formation.
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Yu, J., Zhang, Y., Jiang, G., and Kui, Q., "An Experimental Study on Steady Flash Boiling Spray Characteristics of DME/Diesel Blended fuel," SAE Technical Paper 2010-01-0879, 2010, https://doi.org/10.4271/2010-01-0879.Also In
References
- Wimmer, A. Eichlseder, H. Klell, M. Figer G. “Potential of HCCI Concepts for DI Diesel Engines” International Journal of Vehicle Design 41 32 48 2006
- Juttu, S. Thipse, S.S. Marathe, N.V. Babu, M.K.G. “Homogeneous Charge Compression Ignition (HCCI): A New Concept for Near Zero NOx and Particulate Matter (PM) from Diesel Engine Combustion,” SAE Technical Paper 2007-26-020 2007
- Lee, K. Reitz, R. D. “Investigation of Spray Characteristics from a Low-pressure Common Rail Injector for Use in a Homogeneous Charge Compression Ignition Engine” Measurement Science & Technology 15 3 509 519 2004
- Ganesh, D. Nagarajan, G. Mohamed, I. M. “Study of Performance, Combustion and Emission Characteristics of Diesel Homogeneous Charge Compression Ignition (HCCI) Combustion with External Mixture Formation” Fuel 87 17-18 3497 3503 2008
- Li, L. Hu, Z. Gao, G. Dong, G. “Homogeneous Charge Preparation of Diesel Fuel by Spray Impingement onto a Hot Surface at Intake Manifold,” SAE Technical Paper 2006-01-3322 2006
- Docquier, N. “Influence of Fresh Charge Preparation and Composition on Auto-Ignition Delays and Combustion Development in an Optical HCCI Direct Injection Diesel Engine,” SAE Technical Paper 2003-01-3174 2003
- Senda, J. Wada, Y. Kawano, D. Fujimoto, H. “Improvement of Combustion and Emissions In Diesel Engines By Means of Enhanced Mixture Formation Based on Flash Boiling of Mixed Fuel” International Journal of Engine Research 9 15 27 2008
- Park, B. S. Lee, S. Y. “An Experimental Investigation of the Flash Atomization Mechanism” Atomization and Sprays 4 2 159 179 1994
- McGarvey, M. McGregor, D. McKay, R. B. “Particle Size Analysis by Laser Diffraction in Organic Pigment Technology” Progress in Organic Coatings 31 3 223 228 1997
- Oza, R.D. Sinnamon, J.F. “An Experimental and Analytical Study of Flash-Boiling Fuel Injection,” SAE Technical Paper 830590 1983
- Yamazaki, N. Miyamoto, N. Murayama, T. “The Effects of Flash Boiling Injection on Spray Characteristics, Combustion, and Engine Performance in DI and IDI Diesel Engines,” SAE Technical Paper 850071 1985
- Kawano, D. Goto, Y. Odaka, M. Senda, J. “Modeling Atomization and Vaporization Processes of Flash-Boiling Spray,” SAE Technical Paper 2004-01-0534 2004
- Zhang, H. Y. Zhang, Y. S. Zhou, G. M. “Experimental Study on DME Flash Boiling Spray Characteristics Using Digital Particle Image Velocimetry (DPIV)” SAE Technical Paper 2006-32-0075 2006
- Xiao, J. Huang Z. Qiao X. Q. “An experimental study on the spray characteristics of diesel-dimethyl ether (DME) blended fuels by phase doppler anemometry” Science in China Series E: Technological Sciences 52 4 928 936 2009