This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Study of Ignition Processes of a Lean Burn Engine using Large-Eddy Simulation
Technical Paper
2019-01-2209
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Ultra-lean burn conditions (λ>1.8) is seen as a way for improving efficiency and reducing emissions of spark-ignition engines. In comparison to conventional operation with stoichiometric mixture, this itself raises fundamental issues in terms of combustion physics, among which the significant reduction of the laminar flame speed, increase of the laminar flame thickness as well as an increased sensitivity to local fuel/air equivalence ratio variations are all essential to be accounted for. In particular, the effect of modified laminar flame characteristics on flame stretch during the early flame development in a spark ignited engine is of importance.
In the present work the cycle-to-cycle combustion variations of ultra-lean burn operation is modeled, by utilizing capability of Large-Eddy Simulation (LES). Then results are analyzed after a careful validation of the aerodynamics and spray/flow interactions that have initially been predicted. This aims to simulate direct injection gasoline engine operating in ultra-lean conditions with indicated efficiency of 46%.
First, LES predictions of the cold flow are compared to High Speed Particle Image Velocimetry. Second, the injector model is compared against experimental spray measurements. Third, cyclic variability of burn rates from LES results are compared with experimental data. The simulation yielded results highlighted the importance of having accurate modelling of both flame stretch and laminar flame speed in order to capture the early phase of combustion. Therefore finally, the ignition delay, 50% burning point and the burn duration all match well with experimental data.
Recommended Content
Authors
- O. Benoit - Toyota Motorsport GmbH, Engine Department, Toyota Allée 7, 5
- P. Luszcz - Toyota Motorsport GmbH, Engine Department, Toyota Allée 7, 5
- Y. Drouvin - Toyota Motorsport GmbH, Engine Department, Toyota Allée 7, 5
- T. Kayashima - Toyota Motor Corporation, Powertrain Company, 1 Toyota-Cho,
- P. Adomeit - FEV Europe GmbH, Neuenhofstraße 181 , 52078 Aachen, Germany
- A. Brunn - FEV Europe GmbH, Neuenhofstraße 181 , 52078 Aachen, Germany
- S. Jay - IFP Energies nouvelles, 1 et 4 avenue de Bois-Préau, 92852 R
- K. Truffin - IFP Energies nouvelles, 1 et 4 avenue de Bois-Préau, 92852 R
- C. Angelberger - IFP Energies nouvelles, 1 et 4 avenue de Bois-Préau, 92852 R
Citation
Benoit, O., Luszcz, P., Drouvin, Y., Kayashima, T. et al., "Study of Ignition Processes of a Lean Burn Engine using Large-Eddy Simulation," SAE Technical Paper 2019-01-2209, 2019, https://doi.org/10.4271/2019-01-2209.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 | ||
Unnamed Dataset 5 | ||
Unnamed Dataset 6 |
Also In
References
- Peterson N. , Reuss D. L. , Sick V., High-speed imaging analysis of misfires in a spray-guided direct injection engine Proceedings of the Combustion Institute 33 2 3089 3096 2011 10.1016/j.proci.2010.07.079
- Wang Z. , Liu H. , Reitz R. D., Knocking combustion in spark-ignition engines Progress in Energy and Combustion Science 61 78 112 2017 10.1016/j.pecs.2017.03.004
- Colin O. , Truffin K. , A spark-ignition model for Large-Eddy Simulation based on an FSD transport equation (ISSIM-LES) Proc. Combust. Inst. 33 2011 3097 3104
- d’Adamo A. , Breda S. , Fontanesi S. , Cantore G. , LES modelling of spark-ignition cycle-to-cycle variability on a highly downsized DISI engine SAE Int. J. Engines 8 5 2029 2041 2015 10.4271/2015-24-2403
- Falkenstein T. , Bode M. , Kang S. , Pitsch H. et al. Large-eddy simulation study on unsteady effects in a statistically stationary SI engine port flow In SAE Technical Paper. SAE International, 04 2015 10.4271/2015-01-0373
- Granet V. , Vermorel O. , Lacour C. , Enaux B. et al. Large-eddy simulation and experimental study of cycle-to-cycle variations of stable and unstable operating points in a spark ignition engine Combust. Flame 159 4 1562 1575 2012 10.1016/j.combustflame.2011.11.018
- He C. , Kuenne G. , Yildar E. , van Oijen J. et al. Evaluation of the flame propagation within an SI engine using flame imaging and LES Combustion Theory and Modelling 21 6 1080 1113 2017 10.1080/13647830.2017.1343498
- Richard S. , Colin O. , Vermorel O. , Benkenida A. et al. Towards large eddy simulation of combustion in spark ignition engines Proc. Combust. Inst. 2007 10.1016/j.proci.2006.07.086
- Truffin K. , Angelberger C. , Richard S. , Pera C. Using large eddy simulation and multivariate analysis to understand the sources of combustion cyclic variability in a spark ignition engine Combustion and Flame 162 12 4371 4390 2015
- Robert A. , Richard S. , Colin O. , Martinez L. et al. LES prediction and analysis of knocking combustion in a spark ignition engine Proc. Combust. Inst. 2014 http://doi.org/10.1016/j.proci.2014.05.154
- Lecocq G , Richard S. , Michel J.B. , Vervisch L. A new LES model coupling flame surface density and tabulated kinetics approaches to investigate knock and preignition in piston engines Proc. Combust. Inst. 33 2 2011 3105 3114 https://doi.org/10.1016/j.proci.2010.07.022
- Fontanesi , S. , Paltrinieri , S. , D’Adamo , A. , Cantore , G. et al. Knock Tendency Prediction in a High Performance Engine Using LES and Tabulated Chemistry, SAE Int. J. Fuels Lubr. 6 1 98 118 2013 https://doi.org/10.4271/2013-01-1082
- Misdariis A , Vermorel O. Poinsot T. LES of knocking in engines using dual heat transfer and twostep reduced schemes Combustion and Flame 2015 162 11 4304 4312 https://doi.org/10.1016/j.combustflame.2015.07.023
- Luszcz P. , Takeuchi K. , Pfeilmaier P. , Gerhardt M. et al. Homogeneous Lean Burn Engine Combustion System Development - Concept Study 2018 19 th Stuttgart International Symposium
- Pitsch H. , Duchamp L. Large-Eddy simulation of premixed turbulent combustion using a level-set approach Proc. Combust. Inst. 29 2002 2001 2008
- Poinsot T. , Veynante D. Theoretical and Numerical Combustion Third
- Huo J. , Yang S. , Ren Z. , Zhu D. et al. Uncertainty reduction in laminar flame speed extrapolation for expanding spherical flames Combust. Flame 189 2018 155 162
- Galmiche B. , Halter F. , Foucher F. Effects of high pressure, high temperature and dilution on laminar burning velocities and Markstein lengths of iso-octane/air mixtures Combustion and Flame 159 2012 3286 3299
- Bradley D. , Hicks R. A. , Lawes M. , Sheppard C. G. W. , et al. The Measurement of Laminar Burning Velocities and Markstein Numbers for Iso-octane-Air and Iso-octane-n-Heptane-Air Mixtures at Elevated Temperatures and Pressures in an Explosion Bomb Combust. Flame 115 1-2 1998 126 144
- Müller U. C. , Bollig M. , Peters , N. Approximations for Burning Velocities and Markstein Numbers for Lean Hydrocarbon and Methanol Flames Combustion and Flame 108 349 356 1997
- Peters N. Abschlußbericht zum Forschungsvorhaben Pe 241/9-2 “Turbulente Brenngeschwindigkeit 1994
- Kelley A.P. , Law C.K. , Nonlinear effects in the extraction of laminar flame speeds from expanding spherical flames Combust. Flame 156 2009 1844 1851
- Tabor G. , Weller H.G. , Large-Eddy Simulation of Premixed Turbulent Combustion Using Flame Surface Wrinkling Model Flow, Turbulence and Combustion 72 1-28 2004
- Metghalchi M. , Keck , J. C , Burning Velocities of Mixtures of Air with Methanol, iso-octane and indolene at High Pressure and Temperature Combust. Flame 48 191 210 1982
- Adomeit P. , Weinowski R. , Ewald J. , Brunn A. et al. A New Approach for Optimization of Mixture Formation on Gasoline DI Engines SAE Technical Paper 2010-01-0591 2010 https://doi.org/10.4271/2010-01-0591
- Poinsot T.J. , Lele S.K. , Boundary Conditions for Direct Simulations of Compressible Viscous Flows J. Comp. Physics 101 104 129 1992
- Moureau V. , Lartigue G. , Sommerer Y. , Angelberger et al. Numerical methods for unsteady compressible multi-component reacting flows on fixed and moving grids J. Comp. Phys. 202 710 736 2005
- Reveille B. , Gillet N. , Bohbot J. , Laget O. Automatic Body-Fitted Hybrid mesh generation for Internal Combustion Engine Simulations SAE Technical Paper 2014-01-1133 2014 10.4271/2014-01-1133
- Lax P.D. , Wendroff B. Systems of Conservation Laws Communications on Pure and Applied Mathematics 13 217 237 1960
- Nicoud F. , Baya Toda H. , Cabrit O. , Bose S. et al. Using singular values to build a subgrid-scale model for Large-Eddy Simulations Physics of Fluids 23 8 085106 2011 10.1063/1.3623274
- Nicoud E. Quantifying combustion robustness in GDI engines by Large-Eddy Simulation 46 59 2018
- Garcia M. , Riber E. , Simonin O. , Poinsot T. Comparison between Euler/Euler and Euler/Lagrange LES approaches for confined bluff-body gas-solid flow prediction In International Conference on Multiphase Flow 2007
- Habchi C. The energy spectrum analogy breakup (SAB) model for the numerical simulation of sprays Atomization and Sprays 21 12 1033 1057 2011
- Abramzon B. , Sirignano W. A. Droplet vaporisation model for spray combustion calculations Int. J. Heat and Mass Transfer 9 1605 1618 1989
- Heywood J.B. Internal Combustion Engine Fundamentals New York McGraw-Hill, Print 406 1988
- Krüger Ch. , Schorr J. , Nicollet F. , Bode J. et al. Cause-and-effect chain from flow and spray to heat release during lean gasoline combustion operation using conditional statistics THIESEL 2016 Conference on Thermo- and Fluid Dynamic Processes in Direct Injection Engines