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Injection Strategy Optimization for a Light Duty DI Diesel Engine in Medium Load Conditions with High EGR rates
Technical Paper
2009-01-1441
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Further restrictions on NOx emissions and the extension of current driving cycles for passenger car emission regulations to higher load operation in the near future (such as the US06 supplement to the FTP-75 driving cycle) requires attention to low emission combustion concepts in medium to high load regimes.
One possibility to reduce NOx emissions is to increase the EGR rate. The combustion temperature-reducing effects of high EGR rates can significantly reduce NO formation, to the point where engine-out NOx emissions approach zero levels. However, engine-out soot emissions typically increase at high EGR levels, due to the reduced soot oxidation rates at reduced combustion temperatures and oxygen concentrations.
This paper presents an analysis of the effects of varying injection timing, fuel mass distributions in split injections and fuel rail pressure on emissions, combustion noise and fuel consumption during the medium load operation (≥10 bar IMEP) at high EGR rates (41%) of a single-cylinder test engine, with the overall objective to optimize a triple injection strategy. The results of some of the test cases are compared with those obtained from modelling in KIVA-3V.
Using an optimized triple injection strategy, soot and NOx emission levels from the test engine could be reduced to < 0.04 g/kWh and < 0.4 g/kWh, respectively, at the medium engine load of 10 bar IMEP.
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Helmantel, A. and Golovitchev, V., "Injection Strategy Optimization for a Light Duty DI Diesel Engine in Medium Load Conditions with High EGR rates," SAE Technical Paper 2009-01-1441, 2009, https://doi.org/10.4271/2009-01-1441.Also In
References
- Pierpont D. Montgomery D. Reitz R. Reducing Particulate and NO x Using Multiple Injections and EGR in a D.I. Diesel SAE Technical Paper 950217 1995
- Uchida N. Daisho Y. Saito T. Sugano H. Combined Effects of EGR and Supercharging on Diesel Combustion and Emissions SAE Paper 930601 1993
- Stanglmaier R.H. Roberts C.E. Homogeneous Charge Compression Ignition (HCCI): Benefits, Compromises, and Future Engine Applications SAE Paper 1999-01-3682 1999
- Dec J. A Computational Study of the Effects of Low Fuel Loading and EGR on Heat Release Rates and Combustion Limits in HCCI Engines SAE Paper 2002-01-1309 2002
- Olsson J.O. Tunestal P. Ulfvik J. Johansson B. The Effect of Cooled EGR on Emissions and Performance of a Turbocharged HCCI Engine SAE Paper 2003-01-0743 2003
- Montgomery D. Reitz R. Six-mode Cycle Evaluation of the Effect of EGR and Multiple Injections on Particulate and NO x Emissions from a D.I. Diesel Engine SAE Paper 960316 1996
- Helmantel A. Denbratt I. HCCI Operation of a DI Diesel Engine with an Adjustable Valve Train SAE Paper 2006-01-0029 2006
- Koopmans L Denbratt I A Four Stroke Camless Engine, Operated in Homogeneous Charge Compression Ignition Mode with Commercial Gasoline SAE Paper 2001-01-3610 2001
- Hiroyasu H. Aira M. Structures of Fuel Spray in Diesel Engines SAE Paper 900475 1990
- Idicheria C. Picket L. Soot Formation in Diesel Combustion Under High EGR Conditions SAE Paper 2005-01-3834 2005
- Miles P. Megerle M. Nagel Z. Reitz R. Sick V. Hammer J. Late-cycle Turbulence Generation in Swirl-supported, Direct-Injection Diesel Engines SAE Paper 2002-01-0891 2002
- Helmantel A. Reduction of NO x Emissions from a Light Duty DI Diesel Engine in Medium Load Conditions with High EGR Rates SAE Paper 2008-01-643
- Kamimoto T. Bae M. High Combustion Temperature for the Reduction of Particulate in Diesel Engines SAE Paper 880423 1988
- Akihama K. et al. Mechanism of the Smokeless Rich Diesel Combustion by Reducing Temperature SAE Paper 2001-01-0655 2001
- Gustavsson J. Golovitchev V.I. Spray Combustion Simulation Based on Detailed Chemistry Approach for Diesel Fuel Surrogate Model SAE Paper 2003-01-1848 2003
- Kim S. Wakisaka T. Aoyagi T. A Numerical Study of the Effects of Boost Pressure and EGR Ratio on the Combustion Process and Exhaust Emissions in a Diesel Engine JSAE Paper Number: 20056064 2005
- Lutz A. E. Kee R. J. Miller J. A. SENKIN: A Fortran Program For Predicting Homogeneous Gas Phase Chemical Kinetics With Sensitivity Analysis, SAND87-8248 Sandia National Laboratories Report Reprinted 1994
- Amsden A. A. KIVA-3V: A Block-structured KIVA Program for Engines with Vertical or Canted Valves LA-13313-MS 1997
- Gauthier B. M. Davidson D. F. Hanson R. K. Shock Tube Determination of Ignition Delay Times In Full-Blend and Surrogate Fuel Mixtures Combustion and Flame 139 4 300 311 2004
- Gordon S. McBride B. J. Computer Program for Calculating of Complex Chemical Equilibrium Compositions and Applications I Analysis, NASA Reference Publication 1311 1994
- Mueller J. C. The Quantification of Mixture Stoichiometry when Fuel Molecules Contain Oxidizer Elements or Oxidizer Molecules Contain Fuel Elements SAE Paper 2005-01-3705 2005
- Beale J. C. Reitz R. D. Modeling Spray Atomization with the Kelvin-Helmholtz/Rayleigh-Taylor Hybrid Model Atomization and Sprays 9 623 650 1999
- Villermaux J. Devillon J.C. Représentation de la coalescence et de la redispersion des domaines de ségrégation dans un fluide par un modèle d'interaction phénoménoloqique Proceedings of the 2nd Int. Symposium on Chemical Reaction Engineering 1 13 1972
- Golovitchev V. I. Nordin N. Jarnicki R. Chomiak J. 3-D Diesel Spray Simulations Using a New Detailed Chemistry Turbulent Combustion Model SAE Paper 2000-01-1891 2000
- Hiroyasu H. Arai M. Structures of Fuel Sprays in Diesel Engines SAE Paper 900475 1990
- Nabers J. Siebers D. Effects of Gas Density and Vaporization on Penetration and Dispersion of Diesel Sprays SAE Paper 960034 1996