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Correlating Measured Combustion Performance with CFD Predicted In-Cylinder Flows for a Spark-Ignition Direct-Injection (SIDI) Engine with Enhanced Charge Motion
Technical Paper
2013-01-1090
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A numerical and corresponding experimental study was undertaken to identify the ability to accurately predict combustion performance using our 3-D numerical tools for a direct-injection homogeneous-charge engine. To achieve a significant range of combustion rates, the evaluation was conducted for the engine operating with and without enhanced charge motion. Five charge motion configurations were examined, each having different levels of swirl and tumble flow leading to different turbulence generation and decay characteristics. A detailed CFD analysis provides insight into the in-cylinder flow requirements as well as the accuracy of the submodels. The in-cylinder air-fuel distribution, the mass-averaged swirl and tumble levels along with mean flow and turbulent kinetic energies are calculated throughout the induction and compression processes. These detailed flow parameters are compared to the measured combustion data and correlations between the calculated and measured results are explored. These data demonstrate that enhancing large-scale forward-tumble flows provides a significant advantage over enhancing swirl or side-tumble flows. The correlations generated also serve as a benchmark to improve our analytical capability through identifying model limitations and focus areas for further development.
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Citation
Grover, Jr., R. and Cleary, D., "Correlating Measured Combustion Performance with CFD Predicted In-Cylinder Flows for a Spark-Ignition Direct-Injection (SIDI) Engine with Enhanced Charge Motion," SAE Technical Paper 2013-01-1090, 2013, https://doi.org/10.4271/2013-01-1090.Also In
References
- Voss , E. , Schnittger , W. , Konigstein , A. , Scholten , I. , Popperl , M. , Pritze , S. , Rothenberger , P. , Samstag , M. 2.2L Ecotec Direct - The new All-Aluminium Engine with Gasoline Direct Injection for the Opel SIgnum 24th Internaltional Vienna Motor Symposium Austria May 15 16 2003
- Fraidl , G. , Quissek , F. , Carstensen , H. Verbrauchsoptimierte Ottomotorkonzepte fur zukunftige Emissionsszenarien MTZ 54 1993 4
- Kapus , P. and Poetscher , P. ULEV and Fuel Economy - A Contradiction? SAE Technical Paper 2000-01-1209 2000 10.4271/2000-01-1209
- Unger , H. , Schneider , J. , Schwarz , C. , and Koch , K.-F. VALVETRONIC - Experience from 7 Years of Series Production and a Look into the Future 29th International Vienna Motor Symposium Austria April 24 25 2008
- Galloni , E. Analyses About Parameters that Affect Cyclic Variation in a Spark Ignition Engine Applied Thermal Engineering 29 1131 1137 2009 10.1016/j.applthermaleng.2008.06.001
- Khalighi , B. , El Tahry , S. , Haworth , D. , and Huebler , M. Computation and Measurement of Flow and Combustion in a Four-Valve Engine with Intake Variations SAE Technical Paper 950287 1995 10.4271/950287
- Amsden , A. A. , O'Rourke , P. J. , and Butler , T. D. KIVA: A Computer Program for Two - and Three - Dimensional Fluid Flows with Chemical Reactions and Fuel Sprays Los Alamos Report No. LA-11560-MS 1989
- Grover Jr. , R. O , and Parrish , S. CFD Spray Characterization Methodology of Swirl Injectors for Spark-Ignition Direct-Injection (SIDI) Engine Development 23rd Annual Conference on Liquid Atomization and Spray Systems Ventura, CA May 2011
- Lippert , A. and Reitz , R. Modeling of Multicomponent Fuels Using Continuous Distributions with Application to Droplet Evaporation and Sprays SAE Technical Paper 972882 1997 10.4271/972882
- Lippert , A. , Chang , S. , Are , S. , and Schmidt , D. Mesh Independence and Adaptive Mesh Refinement For Advanced Engine Spray Simulations SAE Technical Paper 2005-01-0207 2005 10.4271/2005-01-0207
- Grover Jr. , R. O. , Assanis , D. N. , Lippert , A. M. , El Tahry , S. H. , Drake , M. C. , Fansler , T. D. , Harrington , D. L. A Critical Analysis of Splash Criteria for SIDI Spray Impingement 15th Annual Conference on Liquid Atomization and Spray Systems Madison, WI May 2002
- Sun , Y. and Reitz , R. Modeling Diesel Engine NOx and Soot Reduction with Optimized Two-Stage Combustion SAE Technical Paper 2006-01-0027 2006 10.4271/2006-01-0027