This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Investigation of Flame Propagation Description in Quasi-Dimensional Spark Ignition Engine Modeling
Technical Paper
2018-01-1655
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
The engine development process has been enhanced significantly by virtual engineering methods during the last decades. In terms of in-cylinder flow field, charge flow and combustion modelling, 3D-CFD (three dimensional) simulations enable detailed analysis and extended investigations in order to gain additional knowledge about design parameters. However, the computational time of the 3D-CFD is an obvious drawback that prevents a reasonable application for extensive analysis with varying speed, load and transient conditions. State-of-the-art 0D (zero dimensional) approaches close the gap between the demand of high computational efficiency and a satisfying accordance with experimental data. Recent improvements of phenomenological combustion approaches for gasoline spark ignition engines deal with the consideration of detailed flow parameters, the accuracy of the laminar flame speed calculation and the prediction of the knock limit. Little attention has been given to the influence of different combustion chamber designs on the prediction capability so far. This leads to an often used simplification consisting of a combustion chamber modeled as a disk and an acceptable inaccuracy of combustion modelling. With an increasing deviation of the surrogate combustion chamber from the investigated real chamber, the prediction capability becomes insufficient. This effect is intensified by the shift of the combustion process to a fast combustion nearby the top dead center (TDC), typical for high performance engines with advanced ignition timing for maximum brake torque.
In order to improve the model accuracy, this examination highlights the effect of different descriptions of the flame propagation in 0D combustion modeling. Two calculation paths are introduced. On the one hand the flame propagation description is determined by the combustion chamber geometry prior to the model calibration process, and on the other hand the flame data is derived from measured data after the model calibration. The forward path considers exemplary combustion chamber designs, e.g. through different piston cavities, their effect on the flame front as well as on the 0D model results. A deep analysis via 3D-CFD of the flame propagation reveals characteristic points, which are related to different geometrical aspects. Despite the consideration of the flame maps, the related changes of the charge motion are calculated through 3D-CFD and transferred to 0D. The improvement of the predictive capability through the flame data and flow parameters is investigated by experimental data of two different high performance engines. The backward path deals with the calculation of flame propagation from measured cylinder pressure data. On the one hand this gives the opportunity to analyze the combustion process with the knowledge gained by the previous introduced characteristic aspects, on the other hand it creates flame maps that are simple to use. Latter improve the 0D combustion model accuracy even without knowing the exact geometry.
Recommended Content
Authors
Topic
Citation
Malcher, S., Bargende, M., Grill, M., Baretzky, U. et al., "Investigation of Flame Propagation Description in Quasi-Dimensional Spark Ignition Engine Modeling," SAE Technical Paper 2018-01-1655, 2018, https://doi.org/10.4271/2018-01-1655.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Unnamed Dataset 4 | ||
| Unnamed Dataset 5 |
Also In
References
- FKFS
- G. Technologies 2016
- Grill , M. , Billinger , T. , and Bargende , M. Quasi-Dimensional Modeling of Spark Ignition Engine Combustion with Variable Valve Train SAE Technical Paper 2006-01-1107 2006 10.4271/2006-01-1107
- Grill , M. , Chiodi , M. , Berner , H.-J. , and Bargende , M. Calculating the Thermodynamic Properties of Burnt Gas and Vapor Fuel for User-Defined Fuels MTZ Worldwide 68 5 30 35 2007
- Grill , M. and Bargende , M. The Cylinder Module MTZ Worldwide 70 10 60 66 2009
- Grill , M. and Bargende , M. The Development of an Highly Modular Designed Zero-Dimensional Engine Process Calculation Code SAE Int. J. Engines 3 1 1 11 2010 10.4271/2010-01-0149
- Schmid , A. , Grill , M. , Berner , H. J. , Bargende , M. Ein neuer Ansatz zur Vorhersage des ottomotorischen Klopfens Ottomotorisches Klopfen-irreguläre Verbrennung 2010 256 277
- Schmid , A. , Grill , M. , Berner , H.J. , and Bargende , M. Transient Simulation with Scavenging in the Turbo Spark-Ignition Engine MTZ Worldwide 71 11 10 15 2010
- Wenig , M. , Grill , M. , and Bargende , M. A New Approach for Modeling Cycle-to-Cycle Variations within the Framework of a Real Working-Process Simulation SAE Int. J. Engines 6 2 1099 1115 2013 10.4271/2013-01-1315
- Verhelst , S. and Sheppard , C.G.W. Multi-Zone Thermodynamic Modelling of Spark-Ignition Engine Combustion - An Overview Energy Conversion and Management 50 5 10.1016/j.enconman.2009.01.002
- Hicks , R. , Lawes , M. , Sheppard , C. , and Whitaker , B. Multiple Laser Sheet Imaging Investigation of Turbulent Flame Structure in a Spark Ignition Engine SAE Technical Paper 941992 1994 10.4271/941992
- Irimescu , A. , Di Iorio , S. , Merola , S. , Sementa , P. et al. Correlation between Simulated Volume Fraction Burned Using a Quasi-Dimensional Model and Flame Area Measured in an Optically Accessible SI Engine SAE Technical Paper 2017-01-0545 2017 10.4271/2017-01-0545
- Auer , M. Wachtmeister , G. and
- Heywood , J.B. Internal Combustion Engine Fundamentals McGraw-Hill Series in Mechanical Engineering 1988
- Hann , S. , Grill , M. , and Bargende , M. Reaction Kinetics Calculations and Modeling of the Laminar Flame Speeds of Gasoline Fuels SAE Technical Paper 2018-01-0857 2018
- Mirzaeian , M. , Millo , F. , and Rolando , L. Assessment of the Predictive Capabilities of a Combustion Model for a Modern Downsized Turbocharged SI Engine SAE Technical Paper 2016-01-0557 2016 10.4271/2016-01-0557
- Bossung , C. , Bargende , M. , Dingel , O. , and Grill , M. A Quasi-Dimensional Charge Motion and Turbulence Model for Engine Process Calculations 15. Internationales Stuttgarter Symposium Stuttgart März 17-18 2015
- Fogla , N. , Bybee , M. , Mirzaeian , M. , Millo , F. et al. Development of a K-k-∊ Phenomenological Model to Predict In-Cylinder Turbulence SAE Int. J. Engines 10 2 562 575 2017 10.4271/2017-01-0542
- Colin , O. and Benkenida , A. The 3-Zones Extended Coherent Flame Model (ECFM-3Z) for Computing Premixed/Diffusion Combustion Oil & Gas Science Technology 59 2004
- Abdel-Gayed , R.G. , Bradley , D. , and Lawes , M. Turbulent Burning Velocities: A General Correlation in Terms of Straining Rates Proc Soc Lond A414 389 413 1987
- Keck , J. , Heywood , J. , and Noske , G. Early Flame Development and Burning Rates in Spark Ignition Engines and Their Cyclic Variability SAE Technical Paper 870164 1987 10.4271/870164
- Matthews , R. and Chin , Y. A Fractal-Based SI Engine Model: Comparisons of Predictions with Experimental Data SAE Technical Paper 910079 1991 10.4271/910079
- Lipatnikov , A. and Chomiak , J. A Simple Model of Unsteady Turbulent Flame Propagation SAE Technical Paper 972993 1997 10.4271/972993
- Morel , T. , Rackmil , C. , Keribar , R. , and Jennings , M. Model for Heat Transfer and Combustion In Spark Ignited Engines and its Comparison with Experiments SAE Technical Paper 880198 1988 10.4271/880198
- Manz , A. Modeling of End-Gas Autoignition for Knock Prediction in Gasoline Engines 2016 978-3-8325-4281-8
- Wilox , D.C. Turbulence Modeling for CFD DCW Industries 1994
- Yakhot , V. and Orszag , S.A. Renormalization Group Analysis of Turbulence - I: Basic Theory J. Scientific Computing 1986
- Knop , V. , Nicolle , A. , and Colin , O. 2001
- Chiodi , M. 2010