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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Glenn D. Boreman
  • Vol. 44, Iss. 31 — Nov. 1, 2005
  • pp: 6606–6615

Quantitative analysis of the near-wall mixture formation process in a passenger car direct-injection Diesel engine by using linear Raman spectroscopy

Marco Taschek, Jan Egermann, Sabrina Schwarz, and Alfred Leipertz  »View Author Affiliations


Applied Optics, Vol. 44, Issue 31, pp. 6606-6615 (2005)
http://dx.doi.org/10.1364/AO.44.006606


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Abstract

Optimum fuel preparation and mixture formation are core issues in the development of modern direct-injection (DI) Diesel engines, as these are crucial for defining the border conditions for the subsequent combustion and pollutant formation process. The local fuel/air ratio can be seen as one of the key parameters for this optimization process, as it allows the characterization and comparison of the mixture formation quality. For what is the first time to the best of our knowledge, linear Raman spectroscopy is used to detect the fuel/air ratio and its change along a line of a few millimeters directly and nonintrusively inside the combustion bowl of a DI Diesel engine. By a careful optimization of the measurement setup, the weak Raman signals could be separated successfully from disturbing interferences. A simultaneous measurement of the densities of air and fuel was possible along a line of about 10 mm length, allowing a time- and space-resolved measurement of the local fuel/air ratio. This could be performed in a nonreacting atmosphere as well as during fired operating conditions. The positioning of the measurement volume next to the interaction point of one of the spray jets with the wall of the combustion bowl allowed a near-wall analysis of the mixture formation process for a six-hole nozzle under varying injection and engine conditions. The results clearly show the influence of the nozzle geometry and preinjection on the mixing process. In contrast, modulation of the intake air temperature merely led to minor changes of the fuel concentration in the measurement volume.

© 2005 Optical Society of America

OCIS Codes
(000.6850) General : Thermodynamics
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(290.5860) Scattering : Scattering, Raman
(300.0300) Spectroscopy : Spectroscopy
(300.6450) Spectroscopy : Spectroscopy, Raman

History
Original Manuscript: January 25, 2005
Revised Manuscript: May 30, 2005
Manuscript Accepted: June 2, 2005
Published: November 1, 2005

Citation
Marco Taschek, Jan Egermann, Sabrina Schwarz, and Alfred Leipertz, "Quantitative analysis of the near-wall mixture formation process in a passenger car direct-injection Diesel engine by using linear Raman spectroscopy," Appl. Opt. 44, 6606-6615 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-31-6606


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References

  1. H. Fujimoto, D. Choi, Y. Shima, J. Senda, “Two-dimensional imaging of fuel-vapour concentration by use of LIEF technique during mixture formation in a DI Diesel engine,” Meas. Sci. Technol. 13, 391–400 (2002). [CrossRef]
  2. T. Pauer, R. Wirth, D. Brüggemann, “Zeitaufgelöste Analyse der DI-Dieselgemischbildung mittels kombinierter Schlieren-/Streulichtmeβtechnik”, in Proceedings of Motorische Verbrennung, Vol. 99–1 of BEV-Schriftenreihe (Esytec, 1999), pp. 231–240.
  3. C. Espey, J. E. Dec, T. A. Litzinger, D. A. Santavicca, “Quantitative 2-D fuel vapor concentration imaging in a firing D.I. Diesel engine using planar laser-induced Rayleigh scattering,” in 1994 SAE International Congress and Exposition (Society of Automotive Engineers, 1994), paper 940682.
  4. H. Fujimoto, S. Kusano, J. Senda, “Distribution of vapor Concentration in a Diesel spray impinging on a flat wall by means of exciplex fluorescence method—in case of high injection pressure,” in 1997 SAE International Fall Fuel and Lubricants Meeting and Exposition (Society of Automotive Engineers, 1997), paper 972916.
  5. P. C. Miles, M. Dilligan, “Quantitative in-cylinder fluid composition measurements using broadband spontaneous Raman scattering,” in 1996 SAE International Congress and Exposition (Society of Automotive Engineers, 1996), paper 960828.
  6. P. C. Miles, P. C. Hinze, “Characterization of the mixing of fresh charge with combustion residuals using laser Raman scattering with broadband detection,” in 1998 SAE International Fall Fuel and Lubricants Meeting and Exposition (Society of Automotive Engineers, 1998), paper 981428.
  7. P. C. Miles, “Raman line imaging for spatially and temporally resolved mole fraction measurements in internal combustion engines,” Appl. Opt. 38, 1714–1732 (1999). [CrossRef]
  8. M. Knapp, V. Beushausen, W. Hentschel, P. Manz, G. Grünefeld, P. Andresen, “In-cylinder mixture formation analysis with spontaneous Raman scattering applied to a mass-production SI engine,” in 1997 SAE International Congress and Exposition (Society of Automotive Engineers, 1997), paper 970827.
  9. G. Grünefeld, V. Beushausen, P. Andresen, W. Hentschel, “A major origin of cyclic energy conversion variations in SI engines: cycle-by-cycle variations of the equivalence ratio and residual gas of the initial charge,” in 1994 SAE International Fall Fuel and Lubricants Meeting and Exposition (Society of Automotive Engineers, 1994), paper 941880.
  10. G. Grünefeld, M. Knapp, V. Beushausen, P. Andresen, W. Hentschel, P. Manz, “In-cylinder measurements and analysis on fundamental cold start and warm-up phenomena of SI engines,” in 1995 SAE International Fall Fuel and Lubricants Meeting and Exposition (Society of Automotive Engineers, 1995), paper 952394.
  11. J. Egermann, W. Koebcke, W. Ipp, A. Leipertz, “Investigation of the mixture formation inside a GDI engine by means of linear Raman spectroscopy,” Proc. Combust. Inst. 28, 1145–1152 (2000). [CrossRef]
  12. T. Heinze, T. Schmidt, “Fuel–air ratios in a spray, determined between injection and autoignition by pulsed spontaneous Raman spectroscopy,” (Society of Automotive Engineers, 1989). [CrossRef]
  13. F. Rabenstein, J. Egermann, A. Leipertz, N. D’Alfonso, “Vapor-phase structures of Diesel-type fuel sprays: an experimental analysis,” in 1998 SAE International Fall Fuel and Lubricants Meeting and Exposition (Society of Automotive Engineers, 1998), paper 982543.
  14. J. Egermann, M. Taschek, A. Leipertz, “Spray/wall interaction influences on the Diesel engine mixture formation process investigated by spontaneous Raman scattering,” Proc. Combust. Inst. 29, 617–623 (2002). [CrossRef]
  15. M. Richter, A. Franke, M. Alden, A. Hultquist, B. Johansson, “Optical diagnostics applied to a naturally aspirated homogeneous charge compression ignition engine,” in 1999 SAE International Fall Fuel and Lubricants Meeting and Exposition (Society of Automotive Engineers, 1999), paper 1999-01-3649.
  16. W. Meier, O. Keck, “Laser Raman scattering in fuel-rich flames: background levels at different excitation wavelengths” Meas. Sci. Technol. 13, 741–749 (2002). [CrossRef]
  17. J. Egermann, T. Seeger, A. Leipertz, “On the application of 266 nm and 355 nm Nd:YAG laser radiation for the investigation of fuel-rich sooting hydrocarbon flames by linear Raman scattering,” Appl. Opt. 43, 5564–5574 (2004). [CrossRef] [PubMed]
  18. D. A. Long, Raman Spectroscopy (McGraw-Hill, 1977).
  19. B. Schrader, Infrared and Raman Spectroscopy (VCH Verlags-gesellschaft, 1995). [CrossRef]
  20. A. C. Eckbreth, Laser Diagnostics for Combustion and Temperature and Species (Abacus, 1988).
  21. A. Weber, Raman Spectroscopy of Gases and Liquids (Springer-Verlag, 1979). [CrossRef]
  22. J. Egermann, A. Leipertz, “Nutzung der linearen Raman-Streuung zur Untersuchung motorischer Prozesse,” in Proceedings of Motorische Verbrennung, Vol. 3–1 of BEV-Schriftenreihe (Esytec, 2003), pp. 179–197.
  23. J. Egermann, Einsatz der linearen Raman-Streuung zur Analyse der Gemischbildung direkteinspritzender Ottomotoren, Vol. 4.3 of BEV-Schriftenreihe (Esytec2004).
  24. Y. Gu, Y. Zhou, H. Tang, E. W. Rothe, G. P. Reck, “Pressure dependence of vibrational Raman scattering of narrow-band, 248-nm, laser light by H2, N2, O2, CO2, CH4, C2H6 and C3H8 as high as 97 bar,” Appl. Phys. B 71, 865–871 (2000). [CrossRef]
  25. D. L. Siebers, “Liquid-phase fuel penetration in Diesel sprays,” in 1998 SAE International Congress and Exposition (Society of Automotive Engineers, 1998), paper 980809.
  26. R. E. Canaan, J. E. Dec, R. M. Green, D. T. Daly, “The influence of fuel volatility on the liquid-phase fuel penetration in a heavy-duty D.I. Diesel engine,” in 1998 SAE International Congress and Exposition (Society of Automotive Engineers, 1998), paper 980510.
  27. A. Leipertz, “Temperaturbestimmung in Gasen mittels linearer and nichtlinearer Raman-Prozesse,” Habilitation thesis (Ruhr-Universität, Bochum, 1984).
  28. S. C. Medina, R. M. Green, J. R. Smith, “Optical measurements of hydrocarbons emitted from a simulated crevice volume in an engine,” in 1984 SAE International Congress and Exposition, (Society of Automotive Engineers, 1984), paper 1984.
  29. M. Knapp, A. Luczak, V. Beushausen, W. Hentschel, P. Manz, P. Andresen, “Polarization separated spatially resolved single laser shot multispecies analysis in the combustion chamber of a realistic SI Engine with a tunable KrF excimer laser,” Proc. Combust. Inst. 26, 2589–2596 (1996). [CrossRef]
  30. J. Kojima, Q.-V. Nguyen, “Laser pulse-stretching with multiple optical ring cavities,” Appl. Opt. 41, 6360–6370. (2002). [CrossRef] [PubMed]
  31. C. Fettes, S. Schraml, C. Heimgärtner, A. Leipertz, “Analysis of the combustion process in a transparent passenger car DI-Diesel engine by means of multidimensional optical measurement techniques,” in 2000 SAE International Fuels and Lubricants Meeting and Exposition (Society of Automotive Engineers, 2000), paper 2000-01-2860.
  32. C. Fettes, A. Leipertz, “Potentials of a piezo-driven passenger car common rail system to meet future emission legislations—an evaluation by means of in-cylinder analysis of injection and combustion,” in 2001 SAE International Fuels and Lubricants Meeting and Exposition (Society of Automotive Engineers, 2001), paper 2001-01-3499.
  33. R. Thurn, W. Kiefer, “Structural resonances observed in the Raman spectra of optically levitated liquid droplets,” Appl. Opt. 24, 1515–1519 (1985). [CrossRef] [PubMed]
  34. R. Vehring, “Linear Raman spectroscopy on aqueous aerosols: influence of nonlinear effects on detection limits,” J. Aerosol Sci. 29, 65–79 (1998). [CrossRef]
  35. V. Sprynchak, C. Esen, G. Schweiger, “Enhancement of Raman scattering by deformation of microparticles,” Opt. Lett. 28, 221–223 (2003). [CrossRef] [PubMed]
  36. D. C. Smith, “Laser radiation-induced air breakdown and plasma shielding,” Opt. Eng. 20, 962–969 (1981). [CrossRef]
  37. A. Portnov, S. Rosenwaks, I. Bar, “Emission following laser-induced breakdown spectroscopy of organic compounds in ambient air,” Appl. Opt. 42, 2835–2842 (2003). [CrossRef] [PubMed]
  38. T. D. Fansler, B. Stoikovic, M. C. Drake, M. E. Rosalik, “Local fuel concentration measurements in internal combustion engines using spark-emission spectroscopy,” Appl. Phys. B 75, 577–590 (2002). [CrossRef]

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