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TECHNICAL PAPERS: Emissions

Development of the Low-Emission GE-7FDL High-Power Medium-Speed Locomotive Diesel Engine

[+] Author and Article Information
G. Chen

Department of Mechanical Engineering, Gannon University, Erie, PA 16541

P. L. Flynn, S. M. Gallagher, E. R. Dillen

GE Transportation Systems, Erie, PA 16531

J. Eng. Gas Turbines Power 125(2), 505-512 (Apr 29, 2003) (8 pages) doi:10.1115/1.1563241 History: Received October 01, 2001; Revised June 01, 2002; Online April 29, 2003
Copyright © 2003 by ASME
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References

Figures

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Fuel injection pressure modification in the HCR engine configuration
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Illustration of injector tip spray included angle
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Comparison of in-cylinder efficiency between two spray angle injector tips
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Illustration of the fuel cam phase shift
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Reduction in NOx versus compression ratio (7FDL16 engine, full load)
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NOx reduction versus compression ratio with unchanged SFC (7FDL16 engine)
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Effect of MAT on HCR 7FDL16 engine NOx
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Change in engine pre-turbine temperature (full load)
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Performance comparison over fuel cam phase (HCR 7FDL16 engine)
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Low-emission GE-AC4400 locomotive meeting Tier-0 standards (line-haul duty cycle)
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Transient smoke optimization on tier-0 compliant locomotive
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Cross section of 7FDL engine baseline
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Locomotive baseline emissions and comparison
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Efficiency affected by solely retarding injection timing to reduce NOx (estimated for 7FDL16 engine, full load)
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Engine combustion analysis for the emission-reduction approach development; (a) cylinder pressure and fuel injection and (b) temperature and heat release
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Engine combustion analysis for increasing compression ratio coupled with modifying injection timing (single-cylinder engine)
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Intake manifold air temperature effect on cylinder temperature

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