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Investigation of Mixture Formation in Diesel Sprays under Quiescent Conditions using Raman, Mie and LIF Diagnostics
Technical Paper
2008-01-0945
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Mixture formation plays an important role for combustion and pollution formation in Diesel sprays. In particular air/fuel ratio (AFR) and temperature of the mixture short before ignition are crucial for these processes. Thus, these two quantities were measured quantitatively using 1-d spontaneous Raman scattering in this work. In addition, 1-d and 2-d Mie scattering was applied to visualize the distribution of the fuel droplets. 1-d and 2-d laser induced fluorescence (LIF) was also used to measure oxygen and fuel in a qualitative way in this work. The common rail Diesel injector was installed in a combustion vessel, in order to provide nearly quiescent high-pressure and high-temperature conditions. N-decane was used as the fuel, because it is a commonly used model fuel for standard Diesel fuel. It was doped with three different tracers with different boiling points in consecutive experiments in the case of 2-d LIF measurements. The Diesel spray is analyzed by combining the qualitative 2-d Mie and LIF images with the quantitative 1-d air/fuel ratio and temperature profiles measured by Raman scattering.
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Hoffmann, T., Hottenbach, P., Koss, H., Pauls, C. et al., "Investigation of Mixture Formation in Diesel Sprays under Quiescent Conditions using Raman, Mie and LIF Diagnostics," SAE Technical Paper 2008-01-0945, 2008, https://doi.org/10.4271/2008-01-0945.Also In
References
- Dec, J. E. “A Conceptional Model of Diesel Combustion Based on Laser-Sheet Imaging,” Transactions of the SAE 106 1319 1348 1997
- Siebers, D. Higgins B. “Flame Lift-Off on Direct-Injection Diesel Sprays under Quiescent Condition,” SAE Technical Paper , 2001-01-0530 2001
- Kohse-Höinghaus, K. Jeffries J. B. Applied combustion diagnostics Taylor and Francis 2002
- Melton, L. A. Verdieck J. F. “Vapor/liquid visualization in fuel sprays,” 20th Symposium on Combustion 1283 1290 1984
- Kamimoto, T. “Diagnostics of Transient Sprays by Means of Laser Sheet Techniques,” International Symposium COMODIA 33 41 1994
- Espey, C. Dec J. E. Litzinger T. A. Santavicca D. A. “Planar laser Rayleigh scattering for quantitative vapor-fuel imaging in a Diesel spray,” Combustion and Flame 109 65 68 1997
- Heinze, T. Schmidt T. “Fuel-air ratios in a spray, determined between injection and autoignition by pulsed spontaneous Raman spectroscopy,” SAE Technical Paper , 892102 1989
- Schrötter, H. W. Klöckner H. W. Raman Spectroscopy of Gases and Liquids chapter Raman scattering cross sections in gases and liquids Springer Verlag Berlin 1979
- Egermann, J. Taschek M. Schwarz S. Leipertz A. “Quantitative analysis of the near-wall mixture formation process in a passenger car direct-injection Diesel engine by using linear Raman spectroscopy,” Applied Optics 44 6606 6615 2005
- Mewes, B. Bauer G. Brüggemann D. “Fuel vapor measurements by linear Raman spectroscopy using spectral discrimination from droplet interferences,” Applied Optics 38 1040 1045 1999
- Jones, A. R. “Light scattering for particle characterization,” Progress in energy and combustion science 25 1 53 1999
- Weber, J. Spiekermann P. Peters N. “Model calibration for spray penetration and mixture formation in a high-pressure fuel spray using a micro-genetic algorithm and optical data,” SAE Technical Paper , 2005-01-2099 2005
- Smith, J. R. “Temperature and density measurements in an engine by pulsed Raman spectroscopy,” SAE Technical Paper , 80137 1980
- Grünefeld, G. Beushausen V. Andresen P. Hentschel W. “Spatially resolved Raman scattering for multi-species and temperature analysis in technically applied combustion systems: spray flame and four-cylinder in-line engine,” Appl. Phys. B 58 333 342 1994
- Adomeit, P. Pischinger S. Becker M. Rohs H. et al. “Potential of soot and CO reduction for HSDI Diesel combustion systems,” SAE Technical Paper , 2006-01-1417 2006
- Greis, A. Optische Untersuchungen des Verbrennungsprozesses in einem PKW-Dieselmotor mit Direkteinspritzung Ph. d. thesis RWTH Aachen University 2007
- Andresen, P. Bath A. Gröger W. Lülf H. W. et al. “Laser-induced fluorescence with tunable excimer lasers as a possible method for instantaneous temperature field measurements at high pressure: checks with an atmospheric flame,” Appl. Opt. 27 365 378 1988
- Pauls, C. Vogel S. Grünefeld G. Peters N. “Combined Simulations and OHChemiluminescence Measurements of the Combustion Process Using Different Fuels under Diesel-Engine like Conditions,” SAE Technical Paper , 2007-01-0020 2007
- Reboux, J. Puechberty D. Dionnet F. “A new approach of planar laser induced fluorescence applied to fuel/air ratio measurement in the compression stroke of an optical s. i. engine,” SAE Technical Paper , 941988 1436 1445 1994
- Perkampus, H.-H. UV-VIS atlas of organic compounds VCH Verlagsgesellschaft Weinheim 1992
- Swindal, J. “in-cylinder charge homogeneity during cold-start studied with fluorescent tracers simulating different fuel distillation temperatures,” SAE Technical Paper , 950106 274 282 1995
- Pickett, L. M. Siebers D. L. Idicheria C. A. “Relationship between ignition processes and the lift-off length of Diesel fuel jets,” SAE Technical Paper , 2005-01-3843 2005