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Simulation of Exhaust Gas Residuals in a Turbocharged, Spark Ignition Engine
Technical Paper
2013-01-2705
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Highly downsized, Direct Injection (DI) engines benefit strongly from cylinder scavenging where possible, to reduce internal residuals thereby reducing the occurrence of knock. Some researchers also suggest that non-homogeneous distribution of internal residuals at high load could contribute to pre-ignition or ‘mega-knock’ with much higher pressure amplitude than that of common knock.
For this reason, a computational study was conducted to assess the residual gas fraction and in-cylinder distribution, using the combustion geometry of the three cylinder, 1.2L MAHLE Downsizing engine, which has proven to be a very robust and reliable research tool into the effects of combustion effects under a number of different operating conditions. This study used a CFD model of the cylinder gas exchange. ES-ICE coupled with STAR-CD was employed for a moving mesh, transient in-cylinder simulation. The boundary conditions were provided by a correlated 1-D (GT-power) model, with several scenarios simulated including engine speed, valve overlap and port geometry. The residual distributions at part load with different inlet ports were also assessed.
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Authors
Citation
Copeland, C., Gao, X., Freeland, P., Neumeister, J. et al., "Simulation of Exhaust Gas Residuals in a Turbocharged, Spark Ignition Engine," SAE Technical Paper 2013-01-2705, 2013, https://doi.org/10.4271/2013-01-2705.Also In
References
- Korte , V. , Lumsden , G. , Fraser , N. , and Hall , J. The MAHLE Downsizing Engine - High Performance and Low Fuel Consumption 10th International Stuttgart Symposium on Automotive and Engine Technology 2010
- “Best Practices Guide for I.C. Engines”, VERSION 4.16.002 2011 CD-adapco
- Kaario , O. , Larmi , M. , and Tanner , F. Relating Integral Length Scale to Turbulent Time Scale and Comparing k-ε and RNG k-ε Turbulence Models in Diesel Combustion Simulation SAE Technical Paper 2002-01-1117 2002 10.4271/2002-01-1117
- Takei , K. , Yamazaki , A. , Hashimoto , S. , Yoshida , K. et al. An Experimental Study Concerning the influence of Hot Residual Gas On Combustion SAE Technical Paper 2000-01-1419 2000 10.4271/2000-01-1419
- Westin , F. , Grandin , B. , and Ångström , H. The Influence of Residual Gases on Knock in Turbocharged SI-Engines SAE Technical Paper 2000-01-2840 2000 10.4271/2000-01-2840
- Konig , G. and Sheppard , C. End Gas Autoignition and Knock in a Spark Ignition Engine SAE Technical Paper 902135 1990 10.4271/902135
- Stenlåås , O. , Gogan , A. , Egnell , R. , Sundén , B. et al. The Influence of Nitric Oxide on the Occurrence of Autoignition in the End Gas of Spark Ignition Engines SAE Technical Paper 2002-01-2699 2002 10.4271/2002-01-2699
- Alger , T. and Wooldridge , S. Measurement and Analysis of the Residual Gas Fraction in an SI Engine with Variable Cam Timing SAE Technical Paper 2004-01-1356 2004 10.4271/2004-01-1356
- Burluka , A. , Liu , K. , Sheppard , C. , Smallbone , A. et al. The Influence of Simulated Residual and NO Concentrations on Knock Onset for PRFs and Gasolines SAE Technical Paper 2004-01-2998 2004 10.4271/2004-01-2998
- Rothe , M. , Heidenreich , T. , Spicher , U. , and Schubert , A. Knock Behavior of SI-Engines: Thermodynamic Analysis of Knock Onset Locations and Knock Intensities SAE Technical Paper 2006-01-0225 2006 10.4271/2006-01-0225
- Kakuho , A. , Sholes , K. , Hashizume , Y. , Takatani , S. et al. Simultaneous Measurement of In-Cylinder Temperature and Residual Gas Concentration in the Vicinity of the Spark Plug by Wavelength Modulation Infrared Absorption SAE Technical Paper 2007-01-0639 2007 10.4271/2007-01-0639
- Amann , M. , Alger , T. , and Mehta , D. The Effect of EGR on Low-Speed Pre-Ignition in Boosted SI Engines SAE Int. J. Engines 4 1 235 245 2011 10.4271/2011-01-0339
- Amann , M. , Mehta , D. , and Alger , T. Engine Operating Condition and Gasoline Fuel Composition Effects on Low-Speed Pre-Ignition in High-Performance Spark Ignited Gasoline Engines SAE Int. J. Engines 4 1 274 285 2011 10.4271/2011-01-0342
- Zahdeh , A. , Rothenberger , P. , Nguyen , W. , Anbarasu , M. et al. Fundamental Approach to Investigate Pre-Ignition in Boosted SI Engines SAE Int. J. Engines 4 1 246 273 2011 10.4271/2011-01-0340
- Hajireza , S. , Sundén , B. , and Mauss , F. Effect of Inhomogeneities in the End Gas Temperature Field on the Autoignition in SI Engines SAE Technical Paper 2000-01-0954 2000 10.4271/2000-01-0954
- Copeland , C. , Martinez-Botas , R. , Turner , J. , Pearson , R. , Luard , N. , Carey , C. , Richardson , S. , Di Martino , P. , Chobola , P. Boost System Selection for a Heavily Downsized Spark Ignition Prototype Engine IMECHE Turbochargers and Turbocharging London 2012