This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
CFD Evaluation of Effects of Split Injection on Combustion and Emissions in a DI Diesel Engine
Technical Paper
2011-01-0822
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Effects of split injection with different EGR rate on combustion process and pollutant emissions in a DI diesel engine have been evaluated with CFD modeling. The model was validated with experimental data achieved from a Caterpillar 3401 DI diesel engine and 3D CFD simulation was carried out from intake valve closing (IVC) to exhaust valve opening (EVO). Totally 12 different injection strategies for which two injection pulses with different fuel amount for each pulse (up to 30% for the second pulse) and different separation between two pulses (up to 30° CA) were evaluated. Results show that adequate injection separation and enough fuel amount of the second pulse could form a separate 2nd stage of heat release which could reduce the peak combustion temperature and improve the oxidation of soot formed in the first heat release stage. This suggests, by optimizing split injection configurations accompanied with appropriate EGR rate, both NOx and soot emissions can be controlled effectively.
Recommended Content
Authors
Topic
Citation
Mobasheri, R., Peng, Z., and Mirsalim, S., "CFD Evaluation of Effects of Split Injection on Combustion and Emissions in a DI Diesel Engine," SAE Technical Paper 2011-01-0822, 2011, https://doi.org/10.4271/2011-01-0822.Also In
References
- Reitz, R.D. “Controlling D.I. Diesel Engine Emissions Using Multiple Injections and EGR” Combustion Science and Technology 138 1 257 278 1998
- Pierpont, D. A. “An Experimental Study of the Effect of Injection Parameters and EGR on D. I. Diesel Emissions and Performance” MSc Thesis Mechanical Engineering Department, University of Wisconsin Madison 1994
- Gao, Z. Schreiber, W. “The Effects of EGR and Split Fuel Injection on Diesel Emission” International Journal of Automotive Technology 2 4 123 133 2001
- Heywood, J. B. “Internal Combustion Engine Fundamentals,” McGraw-Hill, Inc. New York 1988
- Pierpont, D.A. Montgomery, D.T. Reitz, R.D. “Reducing Particulate and NOx Using Multiple Injections and EGR in a D.I. Diesel,” SAE Technical Paper 950217 1995 10.4271/950217
- Ladommatos, N. Abdelhalim, S.M. Zhao, H. Hu, Z. “The Dilution, Chemical, and Thermal Effects of Exhaust Gas Recirculation on Diesel Engine Emissions - Part 4: Effects of Carbon Dioxide and Water Vapour,” SAE Technical Paper 971660 1997 10.4271/971660
- Ladommatos, N. Abdelhalim, S. M. Zhao, H. Hu, Z. “Effects of EGR on Heat Release in Diesel Combustion,” SAE Technical Paper 980184 1998 10.4271/980184
- Hentschel, W. Richter, J.U. “Time-Resolved Analysis of Soot Formation and Oxidation in a Direct-Injection Diesel Engine for Different EGR-Rates by an Extinction Method,” SAE Technical Paper 952517 1995 10.4271/952517
- Dürnholz, M. Eifler, G. Endres, H. “Exhaust-Gas Recirculation-A Measure to Reduce Exhaust Emissions of DI Diesel Engines,” SAE Technical Paper 920725 1992 10.4271/920725
- Arcoumanis, C. Nagwaney, A. Hentschel, W. Röpke, S. “Effect of EGR on Spray Development, Combustion and Emissions in a 1.9L Direct-Injection Diesel Engine,” SAE Technical Paper 952356 1995 10.4271/952356
- Chan, M. Das, S. Reitz, R.D. “Modeling Multiple Injection and EGR Effects on Diesel Engine Emissions,” SAE Technical Paper 972864 1997 10.4271/972864
- Wiedenhoefer, J.F. Reitz, R.D. “Modelling the Effect of EGR and Multiple Injection Schemes on I.C. Engine Component Temperatures” Numerical Heat Transfer, Part A: Applications 37 7 673 694 2000
- Nehmer, D.A. “Measurements of the Effect of Injection Rate and Split Injections on Diesel Engine Soot and NOx Emissions” MSc Thesis Mechanical Engineering Department, University of Wisconsin Madison 1993
- Dronniou, N. Lejeune, M. Balloul, I. Higelin, P. “Combination of High EGR Rates and Multiple Injection Strategies to Reduce Pollutant Emissions,” SAE Technical Paper 2005-01-3726 2005 10.4271/2005-01-3726
- Husberg, T. Denbratt, I. Karlsson, A. “Analysis of Advanced Multiple Injection Strategies in a Heavy-Duty Diesel Engine using Optical Measurements and CFD-Simulations,” SAE Technical Paper 2008-01-1328 2008 10.4271/2008-01-1328
- Mendez, S. Thirouard, B. “Using Multiple Injection Strategies in Diesel Combustion: Potential to Improve Emissions, Noise and Fuel Economy Trade-Off in Low CR Engines,” SAE Int. J. Fuels Lubr. 1 1 662 674 2008 10.4271/2008-01-1329
- Nehmer, D. A. Reitz, R.D. “Measurement of the Effect of Injection Rate and Split Injections on Diesel Engine Soot and NOx Emissions” SAE Paper 940668 1994
- Patterson, M.A. Kong, S.C. Hampson, G.J. Reitz, R.D. “Modeling the Effects of Fuel Injection Characteristics on Diesel Engine Soot and NOx Emissions” SAE Paper 940523 1994
- Tow, T.C. Pierpont, A. Reitz, R. D. “Reducing Particulate and NOx Emission by Using Multiple Injections in a Heavy Duty D.I. Diesel Engine,” SAE Technical Paper 940897 1994 10.4271/940897
- Shayler, P.J. Ng, H.K. “Simulation Studies of the Effect of Fuel Injection Pattern on NOx and Soot Formation in Diesel Engines,” SAE Technical Paper 2004-01-0116 2004 10.4271/2004-01-0116
- Tatschi, R. Gabrief, H.P. Priesching, P. “Fire-a Generic CFD Platform for DI Diesel Engine Mixture Formation and Combustion Simulation” User's Group Meeting at the SAE Congress Detroit, M.I. March 4 2001
- Fire Engine Simulation Environment User Manual v.2009 1 2009
- ICE Physics & Chemistry AVL FIRE user Manual v.2009 1 2009
- Colin, O. Benkenida, A. “The 3-Zones Extended Coherent Flame Model (ECFM3Z) for Computing Premixed / Diffusion Combustion” Oil & Gas Science and Technology - Rev. IFP 59 6 593 609 2004
- Priesching, P. Ramusch, G. Ruetz, J. Tatschi, R. “3D-CFD Modeling of Conventional and Alternative Diesel Combustion and Pollutant Formation - A Validation Study,” SAE Technical Paper 2007-01-1907 2007 10.4271/2007-01-1907
- Halstead, M. Kirsch, L. Quinn, C. “The Auto Ignition of Hydrocarbon Fueled at High Temperatures and Pressures-Fitting of a Mathematical Model” Combustion Flame 30 45 60 1977
- Hioyasu, H. Nishida, K. “Simplified Three Dimensional Modeling of Mixture Formation and Combustion in a DI Diesel Engine,” SAE Technical Paper 890269 1989 10.4271/890269