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Simultaneous Measurement of Soot Mass Concentration and Primary Particle Size in the Exhaust of a DI Diesel Engine by Time-Resolved Laser-Induced Incandescence (TIRE-LII)
Technical Paper
1999-01-0146
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Ultrafine particles within Diesel exhaust gases have gained increased attention within the last few years, as especially the particle size is expected to be the key property for possible toxicity and carcinogenicity from Diesel engine emission. Various exhaust aftertreatment systems like oxidizing catalysts or soot filters have been applied for a significant reduction of soot mass concentration, but their influence on particle sizes and number concentration also has to be considered. This enhances the need for new measurement techniques which allow to measure relevant morphological parameters of soot particles.
Laser-induced incandescence (LII) is presented as a favorable optical technique for soot measurements. It is based on the analysis of the enhanced thermal radiation of the particles after heating with an intense laser pulse and has been successfully applied for soot concentration measurements within laboratory flames and even within technical systems like the cylinder of a Diesel engine. Also, a great potential for emission measurements has been indicated.
In this work, the soot particle emission of a turbocharged 1.9l DI Diesel engine has been investigated within the raw exhaust gas. Quantitative on-line measurements of both the primary particle sizes, based on the analysis of particle cooling, and the mass concentration are simultaneously feasible, even under very low sooting conditions. Basic features of the technique are discussed, and results are presented for various engine speeds and loads and additionally for cold start conditions. Primary particle sizes in a range of 19-36 nm and mass concentrations of 5-110 mg/m3 were found, and a characteristic dependence on the operating conditions of the engine was observed.
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Authors
- S. Schraml - Lehrstuhl für Technische Thermodynamik (LTT) Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
- S. Will - Lehrstuhl für Technische Thermodynamik (LTT) Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
- A. Leipertz - Lehrstuhl für Technische Thermodynamik (LTT) Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
Topic
Citation
Schraml, S., Will, S., and Leipertz, A., "Simultaneous Measurement of Soot Mass Concentration and Primary Particle Size in the Exhaust of a DI Diesel Engine by Time-Resolved Laser-Induced Incandescence (TIRE-LII)," SAE Technical Paper 1999-01-0146, 1999, https://doi.org/10.4271/1999-01-0146.Also In
References
- Ahlvik P. Nntziachristos L. Keskinen J. Virtanen A. SAE Paper 980410 “Real Time Measurements of Diesel Particle Size Distribution with an Electrical Low Pressure Impactor” Society of Automotive Engineers Warrendale, Pa. 1998
- Californian Enviromental Protection Agency “Health Risk Assessment for Diesel Exhaust” May 1998
- Frankfurt 1997
- Baumgard K.J. Johnson J.H. “The Effect of Fuel and Engine Design on Diesel Exhaust Particle Size Distributions” SAE Paper 960131 Society of Automotive Engineers Warrendale, Pa. 1996
- Rickeard D.J. Bateman J.R. Kwon Y.K. MacAughey J.J. Dickens C.J. “Exhaust Particulate Size Distribution: Vehicle and Fuel Influences in Light Duty Vehicles” SAE Paper 961980 Society of Automotive Engineers Warrendale, Pa. 1996
- Bockkhorn H. Fettig F. Meyer U. Reck R. Wannemacher G. “Measurement of the Soot Concentration and Soot Particle Sizes in Propane Oxygen Flames” Eighteenth Symposium (International) on Combustion The Combustion Institute Pittsburgh, Pa. 1981 1137 1147
- Shaddix C.R. Harrington J.E Smyth K.C. “Quantitative Measurements of Enhanced Soot Production in a Flickering Methane/Air Diffusion Flame” Combust. Flame 99 723 732 1994
- Quay B. Lee T.-W. Ni T. Santoro R.J. “Spatially Resolved Measuremets of Soot Volume Fraction Using Laser-Induced Incandescence” Combust. Flame 97 384 392 1994
- Dec J.E. “Soot Distribution in a D.I. Diesel Engine Using 2-D Imaging of Laser-Induced Incandescence, Elastic Scattering, and Flame Luminosity” SAE Paper 920115 Society of Automotive Engineers Warrendale, Pa. 1992
- Hofeldt D.L. “Real-Time Soot Concentration Measurement Technique for Engine Exhaust Streams” SAE Paper 930079 Society of Automotive Engineers Warrendale, Pa. 1993
- Melton L.A. “Soot Diagnostics Based on Laser Heating” Appl. Opt. 23 2201 2208 1984
- Appel J. Jungfleisch B. Marquardt M. Suntz R. Bockhorn H. “Assessment of Soot Volume Fractions from Laser-Induced Incandescence by Comparison with Extinction Measurements in Laminar, Premixed, Flat Flames” Twenty-Sixth Symposium (International) on Combustion The Combustion Institute Pittsburgh, Pa. 1996 2387 2395
- Dasch C.J. “Continous-Wave Probe Laser Investigation of Laser Vaporization of Small Soot Particles in a Flame” Appl. Opt. 23 2209 2215 1984
- Puri R. Richardson T.F. Santoro R.J. Dobbins R.A. “Aerosol Dynamic Processes of Soot Aggregates in a Laminar Ethene Diffusion Flame” Combust. Flame 92 320 333 1993
- Bohren C.F. Huffman D.R. Absorption and Scattering of Light by Small Particles Wiley New York 1983
- Dobbins R.A. Megaridis C.M. “Absorption and Scattering of Light by Polydisperse Aggregates” Appl. Opt. 30 4747 1991
- Dobbins R.A. Mulholland G.W. Bryner N.P. “Comparison of a Fractal Smoke Optics Model with Light Extinction Measurements” Atmos. Environ. 28 889 897 1994
- Vander Wal R.L. Weiland K.J. “Laser-Induced Incandescence: Development and Characterization towards a Measurement of Soot-Volume Fraction” App. Phys. 59 445 452 1994
- Will S. Schraml S. Leipertz A. “Comprehensive Two-Dimensional Soot Diagnostics Based on Laser-Induced Incandescence” Twenty-Sixth Symposium (International) on Combustion The Combustion Institute Pittsburgh, Pa. 1996 2277 2284
- Will S. Schraml S. Leipertz A. “Two-Dimensional Soot-Particle Sizing by Time-Resolved Laser-Induced Incandescence” Opt. Lett. 20 2342 2344 1995
- Will S. Schraml S. Bader K. Leipertz A. “Performance Characteristics of Soot Primary Particle Sizes Measurements by Time-Resolved Laser-Induced Incandescence” Appl. Opt. 37 5647 5658 1998
- Schraml S. Dankers S. Bader K. Will S. Leipertz A. “Soot Temperature Measurements and Implications on Time-Resolved Laser-Induced Incandescence (TIRE-LII)” Comb. Flame 1998
- Roth P. Filippov A. “In Situ Ultrafine Particle Sizing by a Combination of Pulsed Laser Heatup and Particle Thermal Emission” J. Aerosol Sci. 27 95 104 1996
- Vander Wal R.L. Choi M.Y. Lee K.-O. “The Effects of Rapid Heating of Soot: Implications When Using Laser-Induced Incandescence for Soot Diagnostics” Combust. Flame 102 200 204 1995
- Ni T. Pinson J.A. Gupta S. Santoro R.J. “Two-Dimensional Imaging of Soot Volume Fraction by the Use of Laser-Induced Incandescence” Appl. Opt. 34 7083 7091 1995