Browse > Article
http://dx.doi.org/10.7467/KSAE.2014.22.1.193

A Numerical Study on Combustion and Emission Characteristics in Heavy Duty Diesel Engine with Post Injection  

Choi, Minsu (Department of Mechanical Engineering, Graduate School, Pusan National University)
Bae, Jaeok (Department of Mechanical Engineering, Graduate School, Pusan National University)
Suh, Hyunuk (Department of Mechanical Engineering, Graduate School, Pusan National University)
Lee, Byunghwa (Pusan Clean Coal Center, Pusan National University)
Jeon, Chunghwan (School of Mechanical Engineering, Pusan National University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.22, no.1, 2014 , pp. 193-201 More about this Journal
Abstract
A numerical study has been carried out to analyze the combustion characteristics in heavy duty diesel engine with post injection for reducing NO emission. For verification of numerical study results, calculated cylinder pressure was matched to experimental data. In this study, post injection timing and amount of post injection were modified as parameters, but the total amount of injection fuel was maintained. As the results, maximum cylinder pressure increases above minimum 2% by post injection and end of pressure curve is decreased rapidly. The more dwell time and amount of post injection fuel are, the more pressure drop occurs. And trade-off relation of NO and soot are appeared. In the results, NO was reduced without deterioration of cylinder pressure under condition of $10^{\circ}$ CA dwell time and main 60%, post 40% fuel portion.
Keywords
Heavy duty diesel engine; Post injection; Combustion; Emission;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Y. Mingfa, W. Hu, Z. Zunqing and Y. Yan, "Experimental Study of Multiple Injections and Coupling Effects of Multi-injection and EGR in a HD Diesel Engine," SAE 2009-01-2807, 2009.
2 S. J. Charlton, "Developing Diesel Engines to Meet Ultra-low Emission Standards," SAE 2005-01-3628, 2005.
3 R. Mobasheri, Z. Peng and S. M. Mirsalim, "Analysis the Effect of Advanced Injection Strategies on Engine Performance and Pollutant Emissions in a Heavy Duty DI-diesel Engine by CFD Modeling," Heat and Fluid Flow, Vol.33, No.1, pp.59-69, 2012.   DOI
4 M. Bobba, M. Musculus and W. Neel, "Effect of Post Injections on In-cylinder and Exhaust Soot for Low-temperature Combustion in a Heavyduty Diesel Engine," SAE 2010-01-0612, 2010.
5 F. Tao, V. I. Golovitchev and J. Chemiak, "Self-ignition and Early Combustion Process of n-Heptane Sprays under Diluted Air Conditions: Numerical Studies Based on Detailed Chemistry," SAE 2000-01-2931, 2000.
6 R. Lebas, T. Menard, P. A. Beau, A. Berlemont and F. X. Demoulin, "Numerical Simulation of Primary Break-up and Atomization : DNS and Modelling Study," International Journal of Multiphase Flow, Vol.35, No.3, pp.247-260, 2009.   DOI
7 W. N. Park, J. Y. Lee, K. D. Min, J. Yu, S. G. Park and S. H. Cho, "Prediction of Real-time NO Based on the In-cylinder Pressure in Diesel Engines," Proceedings of the Combustion Institute, Vol.34, No.2, pp.3075-3082, 2013.   DOI
8 R. D. Reitz and R. Diwakar, "Effect of Drop Breakup on Fuel Sprays," SAE 860469, 1986.
9 V. Rao and D. Honnery, "A Comparison of Two NOx Prediction Schemes for Use in Diesel Engine Thermodynamic Modelling," Fuel, Vol.107, pp.662-670, 2013.   DOI   ScienceOn
10 D. S. Baik and S. W. Lee, "The Performance Test of SCR System in a Heavy-duty Diesel Engine," Transactions of KSAE, Vol.16, No.6, pp.19-25, 2008.   과학기술학회마을
11 T. K. Kim, Y. M. Sung, S. H. Han, S. J. Ha, G. M. Choi and D. J. Kim, "Effect of Mixer Structure on Turbulence and Mixing with Urea-water Solution in Marine SCR System," Journal of KSME, Vol.36, No.6, pp.814-822, 2012.   과학기술학회마을   DOI   ScienceOn
12 C. D. Rakopoulos, D. T. Hountalas and N. Agaliotis, "Application of a Multi-zone Combustion Model for the Prediction of Large Scale Marine Diesel Engines Performance and Pollutants Emissions," SAE 1999-01-0227, 1999.
13 T. Thurnheer, D. Edenhauser, P. Soltic, D. Schreiber, P. Kirchen and A. Sankowski, "Experimental Investigation on Different Injection Strategies in a Heavy-duty Diesel Engine: Emissions and Loss Analysis," Energy Conversion and Management, Vol.52, No.1, pp.457-467, 2011.   DOI
14 J. M. Desantes, J. Benajes, S. Molina and C. A. Gonzalez, "The Modification of the Fuel Injection Rate in Heavy-duty Diesel Engines. Part 1: Effects on Engine Performance and Emissions," Applied Thermal Engineering, Vol.24, No.17, pp.2701-2714, 2004.   DOI   ScienceOn
15 J. G. Lee and H. C. Choi, "A Dynamic Global Subgrid-scale Model for Large Eddy Simulation of Scalar Transport in Complex Turbulent Flows," Journal of KSME, Vol.26, No.12, pp.3803-3810, 2012.   과학기술학회마을   DOI
16 M. C. Drake and R. J. Blint, "Relative Importance of Nitric Oxide Formation Mechanisms in Laminar Opposed-flow Diffusion Flames," Combustion and Flame, Vol.83, Issues 1-2, pp.185-203, 1991.   DOI
17 X. Cheng, C. F. Fangqin and S. Dong, "Study on Soot Formation Characteristics in the Diesel Combustion Process Based on an Improved Detailed Soot Model," Energy Conversion and Management, Vol.75, pp.1-10, 2013.
18 A. S. Dederichs, Flamelet Modelling of Soot Formation in Diffusion Flames, Ph. D. Dissertation, Lund University, Lund, 2004.
19 A. A. Pekalski, E. Terli, J. F. Zevenbergen, S. M. Lemkowitz and H. J. Pasman, "Influence of the Ignition Delay Time on the Explosion Parameters of Hydrocarbon-air-oxygen Mixtures at Elevated Pressure and Temperature," Proceedings of the Cpmbustion Institute, Vol.30, No.2, pp.1933-1939, 2005.   DOI   ScienceOn