This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Optical Diagnostics Applied to a Naturally Aspirated Homogeneous Charge Compression Ignition Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 25, 1999 by SAE International in United States
Annotation ability available
Basic optical properties have been investigated in order to characterize the HCCI-combustion process. Basic optical properties of a Homogeneous Charge Compression Ignition (HCCI) engine have been investigated in order to characterize the combustion process.
The absorption of light propagating through the combustion chamber has been spectrally resolved for four different fuels. Significant differences between the fuels could be detected. Complementary information could be obtained by recording spontaneous emission of radiation during combustion.
Raman point measurements were used to quantify cycle-to-cycle variations of the equivalence ratio. The homogeneity of the charge was monitored by the use of two-dimensional tracer LIF. That method was also utilized to investigate the flame development.
The experiments were performed in a six-cylinder, truck-sized engine with one cylinder modified to allow for optical access. The results obtained are believed to be valuable in future applications of optical diagnostics in similar environments.
CitationRichter, M., Franke, A., Aldén, M., Hultqvist, A. et al., "Optical Diagnostics Applied to a Naturally Aspirated Homogeneous Charge Compression Ignition Engine," SAE Technical Paper 1999-01-3649, 1999, https://doi.org/10.4271/1999-01-3649.
- Baritaud, T. A. Heinze, T. A. “Gasoline Distribution Measurements with PLIF in a SI Engine.” SAE paper 922355 1992
- Bohren, C. F. Huffman, D.R. “Absorption and Scattering of Light by Small Particles.” Wiley Science Paperback Series 1983
- Bäuerle, B. Hoffmann, E.F. Behrendt, F. Warnatz, J. “Detection of Hot Spots in the End Gas of an Internal Combustion Engine Using Two-dimensional LIF of Formaldehyde.” 25th Symposium on Combustion The Combustion Institute 135 141 1994
- Christensen, M. Johansson, B. “Influence of Mixture Quality on Homogeneous Charge Compression Ignition” SAE paper 982454 1998
- Eckbreth, A. C. “Laser Diagnostics for Combustion Temperature and Species.” 2nd Gordon and Breach Publishers 1996
- Gaydon, A. G. “The Spectroscopy of Flames.” Chapman and Hall 1974
- Grossmann, F. Monkhouse, P.B. Ridder, M. Sick, V. Wolfrum, J. “Temperature and Pressure Dependences of the Fluorescence of Gas-Phase Acetone and 3-Pentanone” Appl. Phys. B 62 249 253 1996
- Grünefeldt, G. Beushausen, V. Andresen, P. Hentschel, W. “Spatially Resolved Raman Scattering form Multi-Species and Temperature Analysis in Technically Applied Combustion Systems: Spray Flame and Four-Cylinder In-Line Engine.” Applied Physics B 333 342 1994
- Hultqvist, A. Christensen, M. Johansson, B. “A Study of the Homogeneous Charge Compression Ignition Combustion Process by Chemiluminescence Imaging.” SAE paper 1999-01-3680 1999
- Johansson, B. “On Cycle to Cycle Variations in Spark Ignition Engines. -The Effects of Fuid Flow and Gas Composition in the Vicinityof the Spark Plug on Early Combustion.” ISRN LUTMDN/TMVK-1010-SE 1995
- Knapp, M. Luczak. A. Schlüter. H. Beushausen. V. Hentschel. W. Andresen. P “Crank-angle-resolved laser-induced fluorescence imaging of No in a spark-ignition engine at 248 nm and correlations to flame front propagation and pressure release.” Applied Optics 35 21 4009 4017 1996
- Neij. H “Development of Laser Induced Fluorescence for Precombustion Diagnostics in Spark Ignition Engines.” Lund Reports on Combustion Physics 1998
- Richter, M. Axelsson, B. Nyholm, K. Aldén, M “Real-Time Calibration of Planar Laser-Induced Fluorescence Air-Fuel Ratio Measurements in Combustion Environments using in-situ Raman Scattering.” 27:th Symposium on Combustion The Combustion Institute 51 57 1998