This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Role of Late Soot Oxidation for Low Emission Combustion in a Diffusion-controlled, High-EGR, Heavy Duty Diesel Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 02, 2009 by SAE International in United States
Annotation ability available
Soot formation and oxidation are complex and competing processes during diesel combustion. The balance between the two processes and their history determines engine-out soot values. Besides the efforts to lower soot formation with measures to influence the flame lift-off distance for example or to use HCCI-combustion, enhancement of late soot oxidation is of equal importance for low-λ diffusion-controlled low emissions combustion with EGR. The purpose of this study is to investigate soot oxidation in a heavy duty diesel engine by statistical analysis of engine data and in-cylinder endoscopic high speed photography together with CFD simulations with a main focus on large scale in-cylinder gas motion. Results from CFD simulations using a detailed soot model were used to reveal details about the soot oxidation.
A particular objective of the present study was to investigate the importance of enhancing soot oxidation after End of Injection (EOI) when temperature and NOx formation rapidly decreases. Geometrical measures to control flame propagation and different flame interactions were investigated. Such measures contribute to conserve available kinetic energy until late in the combustion period in an efficient way. Based on this combustion strategy it is possible to reach near zero engine-out soot emissions.
CitationEismark, J., Balthasar, M., Karlsson, A., Benham, T. et al., "Role of Late Soot Oxidation for Low Emission Combustion in a Diffusion-controlled, High-EGR, Heavy Duty Diesel Engine," SAE Technical Paper 2009-01-2813, 2009, https://doi.org/10.4271/2009-01-2813.
- Optical Diagnostics of Soot in Combusting Sprays Doctorial dissertation. Chalmers University of Technology 2009
- Andersson, Somhorst, Lindgren, Blom Ljungqvist Development of the Euro5 Combustion System for Volvo Carsʹ2.4 l Diesel Engine SAE 2009-01-1450
- Aronsson, Chartier, Andersson, Egnell, Sjöholm, Richte r&Aldén. Analysis of the Correlation Between Engine-Out Particulates and Local Φ in the Lift-Off Region of a Heavy-Duty Diesel Engine Using Raman Spectroscopy SAE paper 2009-01-1357
- Kook, Picket Musculus Influence of Diesel Injection Parameters on End-of-Injection Liquid Length Recession SAE paper 2009-01-1356
- Chartier, Aronsson et al. Analysis of Smokeless Spray Combustion in a Heavy-Duty Diesel Engine by Combined Simultaneous Optical Diagnostics SAE paper 2009-01-1353 . Lund University 2009
- Genzale Reitz Effects of Piston Bowl Geometry on Mixture Development and Late-Injection Low-temperature Combustion in a Heavy-Duty diesel Engine SAE paper 2008-01-1330
- Bobba, Genzale&Musculus. Effect of Ignition Delay on In-Cylinder Soot Characreristics of a Heavy-Duty Diesel Engine Operating at Low Temperature Conditions SAE paper 2009-01-0946
- Husberg. A combustion concept for future heavy-duty diesel engines Doctorial dissertation. Chalmers University of Technology 2008
- Balthasar, Magnusson&Eismark. Soot modelling in HD diesel engine Combustion generated fine carbonaceous particule. Proceedings of an International Workshop held in Villa Orlandi, Anacapri, may 13-16 2007
- Lighty et al. Soot oxidation Combustion generated fine carbonaceous particule. Proceedings of an International Workshop held in Villa Orlandi, Anacapri, may 13-16,2007
- Picket Lopez 2005. Jet-Wall Interaction Effects on Diesel combustion and Soot Formation SAE paper 2005-01-0921
- Kosaka et al. Two-dimensional imaging of ignition and soot formation processes in a diesel flame Internationl journal of engine research g(1) 21 42 2005
- Svensson. Effects of fuel molecular structure and composition on soot formation in direct-injection spray flames Dissertation. Brigham Young University 2005
- Picket Siebers. Non-Sooting, Low Flame Temperature Mixing-controlled DI Diesel combustion SSAE paper 2004-01-1399
- Collin. Laser Diagnostics for Applications to In-Cylinder Engine Investigations Doctorial thesis. Lund University 2004
- Christensen. HCCI Combustion - Engine operation and Emission Characteristics Doctorial thesis. Lund University 2002
- Miles, Megerle, Hammer, Nagel, Reitz Sick. Late-Cycle Turbulence Generation in Swirl-Supported, Direct-Injection Diesel Engines SAE paper 2002-01-0891
- Siebers Higgins. Flame Lift-Off on Direct-Injection Diesel Sprays Under Quiescent Conditions SAE paper 2001-01-0530
- Balthasar, Detailed soot modelling in laminar and turbulent reacting flows Doctorial thesis. Lund University 2000
- Dec. A conceptual model of DI Diesel Combustion based on laser-shett imaging. SAE paper 970873 .
- Chomiak Karlsson. Flame lift-off in diesel sprays Proc. Combust. Insti., 26:2557-2504 1996
- Glassman. Combustion third edition 1996
- Karlsson. Modeling auto-ignition, flame propagation and combustion in non-stationary turbulent sprays Doctorial dissertation. Chalmers University of Technology 1995
- Frenklach Wang. Detailed Mechanism and Modeling of Soot Particle , in soot formation in combustion: Mechanisms and Models (H. Bockhorn Ed),Springer Series in Chemical Physics 59 1994 162 190
- Kamimoto Bae. High combustion temperature for the reduction of particulate in diesel engine SAE paper 880423
- Heywood. Internal combustion engine fundamentals. 1988
- Lee et al. Combustion and Flame, 6:137 (1962)