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Potential of Premixed Combustion With Flash Late Injection On a Heavy-Duty Diesel Engine
Technical Paper
2004-01-1906
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Among the various homogeneous combustion concepts, the “late injection strategy” shows potential to put NOx and particulate emissions within the Euro 5 box at low loads. However, the corresponding retarded injection timings lead to increased fuel consumption. This article gives an overview of techniques which improve fuel consumption by enabling the combustion to be phased closer to top dead center. Primarily, injection duration can be shorten using an adapted Common Rail and high flow tips. Secondly, the ignition delay can be increased through lowered compression ratio or retarded inlet valve closing. Lastly, the mixing of air and fuel can be enhanced as a result of additional nozzle tip holes, optimized A/F and swirl level.
The end result for this combination of improvements is a defined combustion system that yields the same NOx/BSFC trade-off as conventional combustion at low loads, but with very low soot emissions. This could be advantageous in conjunction with diesel particulate filter applications which do not self-regenerate at low loads.
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Lejeune, M., Lortet, D., Benajes, J., and Riesco, J., "Potential of Premixed Combustion With Flash Late Injection On a Heavy-Duty Diesel Engine," SAE Technical Paper 2004-01-1906, 2004, https://doi.org/10.4271/2004-01-1906.Also In
References
- Benajes J. Molina S. García J.M. “Influence of Pre-and Post-Injection on the performance and Pollutant emissions in a HD Diesel Engine” SAE 2001-01-0526
- Benajes J. Molina S García J. M. Riesco J.M. “The effect of swirl on combustión and exhaust emissions in heavy-duty diesel engines” Proceedings of the Inst. Of Mech. Engineers. Part D: Journal of automotive Engineering
- Chaufour P. Millet G. Hedna M. Neyra S. Botellé E. “Advanced Modeling of a Heavy Truck Unit-Injector System and its Application in the Engine Development Process” SAE 2004-01-0020
- Desantes J.M. Arregle J. Molina S. Lejeune M. “Influence of the EGR rate, oxygen concentration and equivalent fuel/air ratio on the combustion behaviour and pollutant emissions of a heavy-duty Diesel engine” SAE 2000-01-1813
- Hasegawa R. Yanagihara H. “HCCI Combustion in DI Diesel Engine” SAE 2003-01-0745
- Kimura S. Osamu A. Ogawa H. Muranaka S. “New Combustion Concept for Ultra-Clean and High-Efficiency Small DI Diesel Engines” SAE 1999-01-3681
- Kimura S. Osamu A. Kitahara Y. Aiyoshizawa E. “Ultra-Clean Combustion Technology Combining a Low Temperature and Premixed Combustion Concept for Meeting Future Emission Standards” SAE 2001-01-0200
- Lapuerta M. Armas O. Hernández J.J. “Diagnostic of D.I. Diesel Combustion from In-Cylinder Pressure Signal by Estimation of Mean Thermodynamic Properties of the Gas” Applied Thermal Engineering 5 513 519 1999
- Lapuerta M. Armas O. Bermúdez V. “Sensitivity of Diesel Engine Thermodynamic Cycle Calculation to Measurement Errors and Estimated Parameters” Applied Thermal Engineering 20 9 843 861 2000
- Ladommatos N. Abdelhalim S. Zhao H. “The effects of exhaust gas recirculation on Diesel combustion and emissions” Int. J. Engine Research 1 1 107 126 2000
- Lejeune M. Lortet D. Michon S. “Combustion Development for Euro 4” Thiesel Conference 2002
- Siebers D. “Liquid-Phase Fuel Penetration in Diesel Sprays” SAE 980809
- Stanglmaier R. Roberts C. “Homogeneous Compression Ignition (HCCI): benefits, Compromises, and Future Engine Applications” SAE 1999-01-3682
- Weissbäck M. Csato J. Glensvig M. Sams T. Herzog P. “Alternative Brennverfahren” MTZ 9 2003 718