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TECHNICAL PAPERS

A Numerical Study of NOx Reduction for a DI Diesel Engine With Complex Geometry

[+] Author and Article Information
Renshan Liu

The University of Western Ontario, Department of Mechanical and Materials Engineering, London, Ontario, Canada, N6A 5B9

Chao Zhang

The University of Western Ontario, Department of Mechanical and Materials Engineering, London, Ontario, Canada, N6A 5B9

J. Energy Resour. Technol 126(1), 13-20 (May 04, 2004) (8 pages) doi:10.1115/1.1627366 History: Received October 01, 2002; Revised July 01, 2003; Online May 04, 2004
Copyright © 2004 by ASME
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References

Figures

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Schematic diagram of a cylinder of the DI Diesel engine
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The fuel injection profile
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Physical regions of the DI Diesel engine
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The perspective view and cross section view at the symmetry plane of the meshed engine
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The effect of the grid resolution on the averaged cylinder pressure prediction
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The effect of the grid resolution on the local temperature at cross section of y=0 cm, z=9.8 cm
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A complete engine cycle showing the fuel injection timings under investigation
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Overall NO formation history for the four fuel injection timings
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Trade-off relationship between the NO formation and the thermal efficiency for various fuel injection timings
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The fuel injection durations under investigation
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Overall NO formation history for the four fuel injection durations
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Trade-off relationship between the NO formation and the thermal efficiency for various fuel injection durations
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Comparison of the three different piston bowl depths under investigation
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Overall NO formation history for the three piston bowls
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Trade-off relationship between the NOx formation and the thermal efficiency for the three piston bowls

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