This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Burn Rate Implications of Alternative Knock Reduction Strategies for Turbocharged SI Engines
Technical Paper
2006-01-1110
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This work is concerned with the analysis of different charge dilution strategies employed with the intention of inhibiting knock in a high output turbocharged gasoline engine. The dilution approaches considered include excess fuel, excess air and cooled external exhaust gas re-circulation (stoichiometric fuelling). Analysis was performed using a quasi-dimensional combustion model which was implemented in GT-Power as a user-defined routine. This model has been developed to provide a means of correctly predicting trends in engine performance over a range of operating conditions and providing insight into the combustion phenomena controlling these trends. From the modelling and experimental data presented, it would appear that the use of cooled externally re-circulated exhaust gases allowed fuel savings near to those achieved via excess air, but with improved combustion stability and combustion phasing closer to the optimum position.
Recommended Content
Authors
Citation
Hattrell, T., Sheppard, C., Burluka, A., Neumeister, J. et al., "Burn Rate Implications of Alternative Knock Reduction Strategies for Turbocharged SI Engines," SAE Technical Paper 2006-01-1110, 2006, https://doi.org/10.4271/2006-01-1110.Also In
References
- Overington, M.T. DeBoer, C. “Vehicle Fuel Economy - High Compression Ratio and Supercharged Compared” SAE Paper 840242 1984
- Guzzella, L. Wenger, U. Martin, R. “IC-Engine Downsizing and Pressure-Wave Supercharging for Fuel Economy” SAE Paper 2000-01-1019 2000
- Petitjean, D. Bernardini, L. Middlemass, C. Shahed, S.M. “Advanced Gasoline Engine Turbocharging Technology for Fuel Economy Improvements” SAE Paper 2004-01-0988 2004
- Konig, G. Sheppard, C.G.W.S. “End-gas autoignition and knock in SI engines” SAE Paper 902135 1990
- Pan, J. Sheppard, C.G.W.S. “A Theoretical and Experimental Study of the Modes of End Gas Autoignition Leading to Knock in SI Engines” SAE Paper 942060 1994
- Pearson, R. Turner, J. Kenchington, S. “Concepts For Improved Fuel Economy from Gasoline Engines” IMechE Fuel Economy and Engine Downsizing Conference 2004
- Fraser, N. Blaxill, H. “Engine Downsizing and the Application of Gasoline Direct Injection to a High Specific Output Turbocharged Engine” IMechE Fuel Economy and Engine Downsizing Conference 2004
- Lang, O. Geiger, J. Habermann, K. Wittler, M. “Boosting and Direct Injection - Synergies for Future Gasoline Engines” SAE Paper 2005-01-1144 2005
- Wirth, M. Mayerhofer, U. Piock, W.F. Fraidl, G.K. “Turbocharging the DI Gasoline Engine” SAE Paper 2000-01-0251 2000
- Lecointe, B. Monnier, G. “Downsizing a Gasoline Engine Using Turbocharging with Direct Injection” SAE Paper 2003-01-0542 2003
- Brustle, C. Hemmerlein, N. “Exhaust gas turbocharged SI engines and their ability of meeting future demands” IMechE Paper C484/039/94 1994
- Grandin, B. Angstrom, H-E. Stalhammar, P. Olofsson, E. “Knock Suppression in a Turbocharged SI Engine by Using Cooled EGR SAE Paper 982476 1998
- Grandin, B. Angstrom, H-E. “Replacing Fuel Enrichment in a Turbo Charged SI Engine: Lean Burn or Cooled EGR” SAE Paper 1999-01-3505 1999
- Duchaussoy, Y. Lefebvre, A. Bonetto, R. “Dilution Interest on Turbocharged SI Engine Combustion” SAE Paper 2003-01-0629 2003
- Stokes, J. Lake, T.H. Osborne, R.J. “A Gasoline Engine Concept for Improved Fuel Economy - The Lean Boost System” SAE Paper 2000-01-2902 2000
- Lake, T. Stokes, J. Murphy, R. Osborne, R. Schamel, A. “Turbocharging Concepts for Downsized DI Gasoline Engines” SAE Paper 2004-01-0036 2004
- Hiroshi, M. Makoto, M. Yuichi, O. Tetsunori, S. Shinji, K. “The Potential of Lean Boost Combustion” SAE Paper 2004-05-2004 2004
- GT-Power Gamma Technologies Inc. 601 Oakmont Lane, Suite 220, Westmont, IL 60559, USA www.gtisoft.com
- Hynes, J. “Turbulence Effects on Combustion in Spark Ignition Engines” Department of Mechanical Engineering, University of Leeds 1986
- Abdi Aghdam, E. “Improvement and Validation of a Thermodynamic S.I. Engine Simulation Code” School of Mechanical Engineering, University of Leeds 2003
- Blizzard, N.C. Keck, J.C. “Experimental and Theoretical Investigation of Turbulent Burning Model for Internal Combustion Engines” SAE Paper 740191 1974
- Gillespie, L. Lawes, M. Sheppard, C.G.W. Woolley, R. “Aspects of Laminar and Turbulent Burning Velocity Relevant to S.I. Engines” SAE Paper 2000-01-0192 2000
- Morel, T. Rackmil, C.I. Keribar, R. Jennings, M.J. “Model for Heat Transfer and Combustion in Spark Ignited Engines and Its Comparison with Experiments” SAE Paper 880198 1988
- Hires, S.D. Tabaczynski, R.J. Novak, J.M. “The Prediction of Ignition Delay and Combustion Intervals for a Homogeneous Charge, Spark Ignition Engine” SAE Paper 780232 1978
- Cairns, A. “Turbulent Flame Development in a Spark Ignition Engine” Department of Mechanical Engineering, University of Leeds 2001
- Cairns, A. Sheppard, C.G.W. “Cyclically resolved simultaneous flame and flow imaging in a SI engine” SAE Paper 2000-01-2832 2000
- Hicks, R.A. Lawes, M. Sheppard, C.G.W. Whitaker, B.J. “Multiple Laser Sheet Imaging Investigation of Turbulent Flame Structure in a Spark-Ignition Engine” SAE Paper 941992 1994
- Rhodes, D.B. Keck, J.C. “Laminar Burning Speed Measurements of Indolene-Air-Diluent Mixtures at High Pressures and Temperatures” SAE Paper 850047 1985
- Bradley, D. Hicks, R.A. Lawes, M. Sheppard, C.G.W. Woolley, R. “The Measurement of Laminar Burning Velocities and Markstein Numbers for Iso-octane - n-Heptane - Air Mixtures at Elevated Temperatures and Pressures in an Explosion Bomb” Combustion and Flame 115 126 144 1998
- Lipatnikov, A.N. Chomiak, J. “A Simple Model of Unsteady Turbulent Flame Propagation” SAE Paper 972993 1997
- Zimont, V.L. “Theory of Turbulent Combustion of a Homogeneous Fuel Mixture at High Reynolds Numbers” Combustion, Explosion and Shockwaves 15 305 311 1979
- Bird R.B. Steward W.E. Lightfoot E.N. “Transport Phenomena” Wiley New York 2002
- Abdi Aghdam, E. “Improvement and Validation of a Thermodynamic S.I. Engine Code” School of Mechanical Engineering, University of Leeds
- Sheppard, C.G.W. Burluka, A.A. Lawes, M. Woolley, R. Liu, K. Abdi Aghdam, E. Smallbone, A.J. Murad, A. Wu, C.H. “Gasoline Engine Turbo-charging: Advanced Gasoline Powertrain for reduced fuel consumption and CO2 emissions” GET-CO2 Project Final Report, European Union project number: GRDA-2000-25618, European Union contract number: G3RD-CT-2000-00364 16th February 2005
- Liu, K. “LUSIE Technical Manual” Combustion Research Group, School of Mechanical Engineering, University of Leeds 2004
- Atashkari, K. “Experimental Study of Flow and Turbulence in a V-Flame Burner and a S.I. Engine” Department of Mechanical Engineering, University of Leeds 1997
- Tabaczynski, R. “Turbulence and Turbulent Combustion in Spark-Ignition Engines” Progress in Energy and Combustion Science 2 143 165 1976
- Fraser, R.A. Bracco, F.V. “Cycle-Resolved LDV Integral Length Scale Measurements Investigating Clearance Height Scaling, Isotropy, and Homogeneity in an I.C. Engine” SAE Paper 890615 1989
- Fraser, R.A. Felton, P.G. Bracco, F.V. Santavicca, D.A. “Preliminary Turbulence Length Scale Measurements in a Motored IC Engine” SAE Paper 860021 1986
- Hall, M.J. Bracco, F.V. “A Study of Velocities and Turbulence Intensities Measured in Firing and Motored Engines” SAE Paper 870453 1987
- Wu, C.-H. “Flow Field and Combustion Studies Relating to Downsized Spark Ignition Engines” School of Mechanical Engineering, University of Leeds 2005
- 2004
- Cairns, A. Blaxill, H. Irlam, G. Lumsden, G. “Exhaust Gas Recirculation for Part and Full Load Fuel Economy in a Turbocharged Gasoline Engine” SAE Offer 06P-197 (2006 World Congress)
- Abraham, J. Williams, F.A. Bracco, F.V. “A Discussion of Turbulent Flame Structure in Premixed Charges” SAE Paper 850343 1985
- Damköhler, G. “The Effect of Turbulence on Flame Velocity in Gas Mixtures” Z. Elektrochemie Angewandte Phys. Chem 46 1940
- Abdel-Gayed, R.G. Bradley, D. Lawes, M. “Turbulent Burning Velocities: A General Correlation in terms of Straining Rates” Proceedings of the Royal Society of London A 414 389 413 1987
- Merdjani, S. Sheppard, C.G.W. “Gasoline Engine Cycle Simulations Using the Leeds Turbulent Burning Velocity Correlations” SAE Paper 932640 1993