Visualization of Diesel and GTL Spray Combustion and Soot Formation in a Rapid Charging Combustion Vessel with Shadowgraph Method
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In this study, visual investigation of sprays and flames has been performed and soot formation in Diesel and GTL fuels has been compared in a specially designed Rapid Charging Combustion Vessel (RCCV) under various ambient gas O2 concentrations and two injection pressures. It has been concluded that soot in the mixing-controlled combustion of Diesel and GTL fuels has similar tendency to be formed in the leading portion of the jet boundaries. Auto-ignition delay for GTL fuel is shorter than that for diesel fuel. The temporal and special variation of soot concentration in the diesel flame jets at various O2 concentrations was correlated with the heat release rate. Soot concentration appears in the regions when diffusion combustion starts, and its concentration reaches maximum at the peak of heat release curve and then decreases due to oxidation. Visualization by shadowgraph method showed that soot decreases with lower O2 concentration, and higher injection pressure.
Abstract
In this study, visual investigation of sprays and flames has been performed and soot formation in Diesel and GTL fuels has been compared in a specially designed Rapid Charging Combustion Vessel (RCCV) under various ambient gas O2 concentrations and two injection pressures. It has been concluded that soot in the mixing-controlled combustion of Diesel and GTL fuels has similar tendency to be formed in the leading portion of the jet boundaries. Auto-ignition delay for GTL fuel is shorter than that for diesel fuel. The temporal and special variation of soot concentration in the diesel flame jets at various O2 concentrations was correlated with the heat release rate. Soot concentration appears in the regions when diffusion combustion starts, and its concentration reaches maximum at the peak of heat release curve and then decreases due to oxidation. Visualization by shadowgraph method showed that soot decreases with lower O2 concentration, and higher injection pressure.
참고문헌 (21)
- Fuel Property, Emission Test, and Operability Results from a Fleet of Class 6 Vehicles Operating ON Gas-To-Liquid Fuel and Catalyzed Diesel Particle Filters, "Alleman, T. L.", ~, pp.2004-01-2959
- Fuel Characteristics Evaluation of GTL for DI Diesel Engine, "Oguma, M.", ~, pp.2004-01-0088
- The Possibility of Gas to Liquid (GTL) as a Fuel of Direct Injection Diesel Engine, "Oguma, M.", International Spring Fuels & Lubricants, ~ (2002)
- Experimental Investigation of Lubricity Improvement of Gas-to-Liquid (GTL) Fuels with Additives for Low Sulphur Diesel Fuel, "Fukumoto, M.", ~, pp.2003-01-1948
- "Shell Fact Sheet. Gas to Liquids for Automotive Fuel, Shell Co. Ltd.", ~ (2004)
- Wu, T., "Physical and chemical properties of GTL-Diesel fuel blends and their effects on performance and emissions of a multicylinder DI compression ignition engine", Energy and Fuels, 21, pp.1908~1914 (2007)
- Effects of flame lift-off and flame temperature on soot formation in oxygenated fuel sprays, "Ito, T.", ~, pp.2003-01-0073 (2003)
- Goldstein, R. J., "Fluid Mechanics Measurements", pp.394~400 (1983), Hemisphere Publishing Corporation
- 2-D imaging of soot formation process in a transient spray flame by laser-induces fluorescence and incandescence techniques, "Aizawa, T.", ~, pp.2002-01-2669 (2002)
- Chang, Y. J., "photographic study of soot formation and combustion in a diesel flame with a rapid compression machine", The Int. Symp. Diagnostics and Modeling of Combustion in Internal Combustion Engines (1985)
- M. Soot Formation in Diesel Combustion under High-EGR Conditions, "Idicheria, C.A.", ~, pp.2005-01-3834 (2005)
- A study on soot formation and oxidation in an unsteady spray flame via laser induced incandescence and scattering techniques, "Kosaka, H.", ~, pp.952451 (1995)
- Non-sooting, low flame temperature mixing-controlled DI diesel combus- tion, "Pickett, L. M", ~, pp.2004-01-1399 (2004)
- A conceptual model of DI diesel combustion based on laser-sheet imaging, "Dec, J. E.", ~, pp.970873 (1997)
- Impact of diesel fuel aromatics on particulate, "Mitchell, K.", ~, pp.942053 (1994)
- Effect of upgraded diesel fuels and oxidation catalysts on emission properties, especially PAH and genotoxicity, "Johansen, K.", ~, pp.973001 (1997)
- Effect of fuel compositions on PAH in particulate matter from DI diesel engine, "Tanaka, S.", ~, pp.982648 (1998)
- Vaaraslahti, K., "Nucleation mode formation in heavy-duty diesel exhaust with and without a particulate filter", Envir.Sci. and Technology, 38, pp.4884~4890 (2004)
- Lim, M.C.H., "Effect of fuel composition and engine operating conditions on polycyclic aromatic hydrocarbon emissions from a fleet of heavy-duty diesel buses", Atmospheric Environment, 39(40), pp.7836~7848 (2005)
- Lim, M.C.H., "The effect of fuel characteristics and engine operating conditions on the elemental composition of emissions from heavy duty diesel busses", Fuel, 86, pp.1831~1839 (2007)
- Heywood, J.B., "Internal Combustion Engine Fundamentals", pp.635~639 (1989), McGraw-Hill