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TECHNICAL PAPERS: Auto-ignition and Homogeneous Charge Compression Ignition Engines

Homogeneous Charge Compression Ignition Engine: A Simulation Study on the Effects of Inhomogeneities

[+] Author and Article Information
P. Maigaard, F. Mauss

Division of Combustion Physics, Lund University, P. O. Box 118, 22100 Lund, Sweden  

M. Kraft

Department of Chemical Engineering, University of Cambridge, Cambridge CB2 3RA, UKe-mail: markus_kraft@cheng.cam.ac.uk

J. Eng. Gas Turbines Power 125(2), 466-471 (Apr 29, 2003) (6 pages) doi:10.1115/1.1563240 History: Received July 01, 2000; Revised August 01, 2002; Online April 29, 2003
Copyright © 2003 by ASME
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References

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Christensen, M., Johansson, B., Amneus, P., and Mauss, F., “Supercharged HCCI Engine,” SAE Paper No. 980787.
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Kraft, M., 1998, “Stochastic Modelling of Turbulent Reacting Flow in Chemical Engineering,” VDI Verlag, Fortschrittsberichte des VDI, Reihe 6 (391).
Procaccini,  C., Kraft,  M., Fey,  H., Bockhorn,  H., Longwell,  J. P., Sarofim,  A., and Smith,  K. A., 1998, “PIC Formation During the Combustion of Simple Hydrocarbons in Inhomogeneous Incineration Systems,” Proc. Combust. Inst.,27, pp. 1275–1281.
Richter, M., Engström, J., Franke, A., Aldén, M., Hultqvist, A., and Johansson, B., 2000, “The Influence of Charge Inhomogeneity on the HCCI Combustion Process,” SAE Paper No. 2000-FL-633.
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Heywood, J. B., 1989, “Internal Combustion Engine Fundamentals,” McGraw-Hill, New York.
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Hajireza, S., Mauss, F., and Sundén, B., 1997, “Investigation of End-Gas Temperature and Pressure Increases in Gasoline Engines and Relevance for Knock Occurrence,” SAE Paper No. 971671.
Bood, J., Bengtsson, P.-E., Mauss, F., Burgdorf, K., and Denbratt, I., 1997, “Knock in Spark-Ignition Engines: End-Gas Temperature Measurements Using Rotational CARS and Detailed Kinetic Calculations of the Autoignition Process,” SAE Paper No. 971669.
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Figures

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Numerical results from the PFR model compared with experiments. The TD100 engine is in this case run at 1000 rpm and ϕ=0.368. The jagged line represents results from a single experimental engine cycle and the broken line is its smoothed version.
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Temperature distribution in the boundary layer. The temperature increases from the wall temperature and asymptotically approaches the bulk gas temperature.
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Pressure history. Results from the new model with varying number of particles are compared to experimental data and a previous model result.
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Temperature history. Results from the new model with varying number of particles are compared to experimental data and a previous model result.
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STD-DEV of temperature history
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Sensitivity study on turbulence mixing time scale (τ)
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STD-DEV of temperature histories for the sensitivity study on turbulence time scale
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STD-DEV of temperature. Closeup on the faster mixing cases

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