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Optimisation of Injection Strategy, Combustion Characteristics and Emissions for IC Engines Using Advanced Simulation Technologies
Technical Paper
2011-26-0080
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SIAT 2011
Language:
English
Abstract
Regulations concerning emissions from diesel- and
gasoline-fuelled engines are becoming ever more stringent in all
parts of the world. Historically these targets have been achieved
through on-going technological development using an iterative
process of computational modeling, design, build and test.
Computational modeling is certainly the cheapest aspect within this
process and if employed to meet more of the challenges associated
with development, has the potential to significantly reduce
developmental cost and time scales. Furthermore, computational
models are an effective means to retain and apply often highly
focused technical knowledge of complex processes within development
teams thus delivering greater insight into processes.
As such there is a great deal of interest in advanced simulation
technologies; one such technology is srm suite™ which has proven
effective in simulating in-cylinder combustion processes to enable
engineers to identify optimal injection, valve train and spark
timing operating strategy to achieve a particular load-speed point
with reduced target emissions. The model accounts for the impact of
fuel injection strategies, detailed chemical kinetics, turbulent
mixing, and heat losses on the inhomogeneities associated with the
in-cylinder composition and temperature, within practical computing
time scales.
In order to account for the valve train dynamics and engine
breathing within the context of engine cycle simulation, the srm
suite has been coupled with standard 1D engine cycle simulators and
applied to investigate three industry relevant problems (1)
investigating cycle-to-cycle variations on emissions in an SI
engine, (2) investigating emissions at different injection timings,
speeds and loads in a diesel engine operated with pilot injection
and high levels of Exhaust Gas Recirculation (EGR), and (3)
simulating a dual injection Homogeneous Charge Compression Ignition
(HCCI) engine operated with an injection (fuel reformation) during
Negative Valve Overlap (NVO). In each context, computational
results are compared with experimental observations and conclusions
presented.
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Authors
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Citation
Etheridge, J., Bhave, A., Smallbone, A., Coble, A. et al., "Optimisation of Injection Strategy, Combustion Characteristics and Emissions for IC Engines Using Advanced Simulation Technologies," SAE Technical Paper 2011-26-0080, 2011, https://doi.org/10.4271/2011-26-0080.Also In
References
- Smith, G P et al. http://www.me.berkeley.edu/gri_mech/
- Law, C K “Combustion at a Crossroads: Status and Prospects” Proceedings of the Combustion Institute 31 1 1 29 2007
- Wang, H et al. “USC Mech Version II. High-Temperature Combustion Reaction Model of H2/CO/C1-C4 Compounds” http://ignis.usc.edu/USC_Mech_II.htm May 2007
- Puduppakkam, K V “Combustion and Emissions Modeling of a Gasoline HCCI Engine Using Model Fuels” SAE Paper No. 2009-01-0669 2009
- Farrell, J T et al. “Development of an Experimental Database and Kinetic Models for Surrogate Diesel Fuels” SAE Paper No. 2007-01-0201 2007
- Burluka, A et al. “The Influence of Simulated Residual and NO Concentrations on Knock Onset for PRFs and Gasolines” SAE Paper No. 2004-01-2998 2004
- Smallbone, A et al. “Simulating Combustion of Practical Fuels and Blends for Modern Engine Applications Using Detailed Chemical Kinetics” SAE Paper No. 2010-01-0572 2010
- Morgan, N et al. “Mapping Surrogate Gasoline Compositions into RON/MON Space” Combustion and Flame 157 1122 1131 2010
- Cao, L et al. “Influence of Injection Timing and Piston Bowl Geometry on PCCI Combustion and Emissions” SAE International Journal of Engines 2 1 1019 1033 2009
- Kraft, M et al. “Investigation of Combustion Emissions in a HCCI Engine: Measurements and a New Computational Model” Proc. Combust. Inst. 28 1195 1201 2000
- Mosbach, S Aldawood, A Kraft, M “Real-Time Evaluation of a Detailed Chemistry HCCI Engine Model Using a Tabulation Technique” Combustion Science and Technology 180 1263 1277 2008
- Mosbach, S et al. “Dual Injection Homogeneous Charge Compression Ignition Engine Simulation Using a Stochastic Reactor Model” Int. J. Engine Res. 8 1 41 50 2007
- Pope, S “PDF Methods for Turbulent Reactive Flows” Prog. Energy Combust Sci. 11 119 192 1985
- Subramaniam, S Pope, S “A Mixing Model for Turbulent Reactive Flows based on Euclidean Minimum Spanning Trees” Combust. Flame 115 487 514 1998
- Abdi Aghdam, E et al. “Study of Cyclic Variation in an SI Engine Using Quasi-Dimensional Combustion Model” SAE Paper No. 2007-01-0939 2007
- Serras-Pereira, J et al. “Mixture Preparation and Combustion Variability in a Spray-Guided DISI Engine” SAE Paper No. 2007-01-4033 2007
- Brown, A Stone, C Beckwith, P “Cycle-by-Cycle Variations in Spark Ignition Engine Combustion - Part I Flame Speed and Combustion Measurements and a Simplified Turbulent Combustion Model” SAE Paper No. 960612 1996
- Stone, C Brown, A Beckwith, P “Cycle-by-Cycle Variations in Spark Ignition Engine Combustion - Part II Modelling of Flame Kernel Displacements as a Cause of Cycle-by-Cycle Variations” SAE Paper No. 960613 1996
- Daneshyar, H Hill, P G “The Structure of Small-scale Turbulence and its Effect on Combustion in Spark Ignition Engines” Prog. Energy Combust. Sci. 13 47 73 1987
- Ewald, J Peters, N “On Unsteady Premixed Turbulent Burning Velocity Prediction in Internal Combustion Engines” Proc. Combust. Inst. 31 3051 3058 2007
- Tan, Z Reitz, R D “An Ignition and Combustion Model Based on the Level-Set Method for Spark Ignition Engine Multidimensional Modeling” Combustion and Flame 145 1 15 2006
- Bayraktar, H “Theoretical Investigation of Flame Propagation Process in an SI Engine Running on Gasoline-Ethanol Blends” Renewable Energy 32 758 771 2007
- Baratta, M et al. “Development and Assessment of a Multizone Combustion Simulation Code for SI Engines Based on a Novel Fractal Model” SAE Paper No. 2006-01-0048 2006
- Keck, J “Turbulent Flame Structure and Speed in Spark-Ignition Engines” Nineteenth Symposium (International) on Combustion The Combustion Institute 1451 1466 1982
- Karagiorgis, S et al. “Residual Gas Fraction and Estimation on a Homogeneous Charge Compression Ignition Engine Utilizing the Negative Valve Overlap Strategy” SAE Paper No. 2006-01-3276 2006
- Heywood, J B “Internal Combustion Engine Fundamentals” McGraw-Hill New York 1988
- Durnholz, M Endres, H Frisse, P “Preinjection: A measure to Optimize Emission Behaviour of DI-Diesel Engine” SAE Paper No. 940674 1994
- Badami, M et al. “Influence of Multiple Injection Strategies on Emissions, Combustion Noise and BSFC of a DI Common Rail Diesel Engine” SAE Paper No. 2002-01-0503 2002
- Tow, T C Pierpont, D A Reitz, R D “Reducing Particulate and NOx Emissions by Using Multiple Injections in a Heavy Duty D.I. Diesel Engine” SAE Paper No. 940897 1994
- Nehmer, D A Reitz, R D “Measurement of the Effect of Injection Rate and Split Injections on Diesel Soot and NOx Emissions” SAE Paper No. 940668 1994
- Montgomery, D T Reitz, R D “Six-Mode Cycle Evaluation of the Effect of EGR and Multiple Injections on Particulate and NOx Emissions form a D.I. Diesel Engine” SAE Paper No. 960316 1996
- Koopmans, L Denbratt, I “A Four Stroke Camless Engine, Operated in Homogeneous Charge Compression Ignition Mode with Commercial Gasoline” SAE Paper No. 2001-01-3610 2001
- Koopmans, L Backlund, O Denbratt, I “Cycle to Cycle Variations: Their Influence on Cycle Resolved Gas Temperature and Unburned Hydrocarbons from a Camless Gasoline Compression Ignition Engine” SAE Paper No. 2002-01-0110 2002
- Bhave, A N et al. “Evaluating the EGR-AFR Operating Window” SAE Paper No. 2005-010161 2005
- Persson, H et al. “The Effect of Intake Temperature on HCCI Operation Using Negative Valve Overlap” SAE Paper No. 2004-01-0944 2004
- Sjöberg, M Dec, J Hwang, W “Thermodynamic and Chemical Effects of EGR and its Constituents on HCCI Autoignition” SAE Paper No. 2007-01-0207 2007
- Shaver, G et al “A Physics-Based Approach to the Control of Homogeneous Charge Compression Ignition Engines with Variable Valve Actuation” Int. J. Engine Research 6 4 361 375 2005