This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Effect of Spray Included Angle and Swirl Ratio on Combustion and Emissions under Post Injection
Technical Paper
2021-01-1169
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
The widespread application and increasingly stringent emission regulations call for more attention to optimize combustion process and emissions of marine diesel engine. This study conducts a numerical study to investigate the individual effect and their interaction of three post injection duration (3°CA, 5°CA and 7°CA), four spray included angles (145°, 150°, 155° and 160°) and four swirl ratios (0.5, 0.85, 1.2 and 1.6) in a marine diesel engine with main-post injection. These three parameters all exert impact on in-cylinder combustion performance and emissions by affecting fuel-air mixing quality. Results show that decreasing post injection duration from 7°CA to 3°CA shortens the combustion duration and decreases soot emission by 13.2%, while that induces a slight increase in NOx emissions by 1.0%. Spray included angle changes the spray targeting position within the combustion chamber. Wider spray included angle raises the peak value of in-cylinder pressure by 1%, decreases indicated specific fuel consumption (ISFC) by 2.9%, and produces a significantly drop in soot emission by 49.6%. The intermediate spray included angle of 150° is the most suitable in reduction of NOx emissions. Swirl ratio represents the intensity of air flow movement around the axis of cylinder. Larger swirl ratio decreases ignition delay while increases combustion duration. An appreciated swirl ratio of 0.5 achieves simultaneously reduction in NOx emissions and soot emission. To sum up, there are 13 cases that break the traditional NOx-soot trade-off relationship as both NOx and soot emissions decrease with optimized post injection duration, spray included angle and swirl ratio, in comparison with the original engine. Furthermore, an optimization procedure of case D3-A160-S0.5 is summarized, which produces the best performance in emissions and ISFC by simultaneously decreasing NOx emissions by 30.4%, soot emission by 34.6%, and ISFC by 0.7%.
Authors
Citation
Zhao, C., Kong, S., and Bian, Z., "Effect of Spray Included Angle and Swirl Ratio on Combustion and Emissions under Post Injection," SAE Technical Paper 2021-01-1169, 2021, https://doi.org/10.4271/2021-01-1169.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 |
Also In
References
- Viana , M. , Hammingh , P. , Colette , A. et al. Impact of Maritime Transport Emissions on Coastal Air Quality in Europe Atmospheric Environment 90 2014 96 105 10.1016/j.atmosenv.2014.03.046
- Johnson , T.V. Diesel Emissions Control in Review SAE Technical Paper 2011-01-0304 2011 https://doi.org/10.4271/2011-01-0304
- Yao , M. , Wang , H. , Zheng , Z. et al. Experimental Study of n-Butanol Additive and Multi-injection on HD Diesel Engine Performance and Emissions Fuel 89 9 2010 2191 2201 10.1016/j.fuel.2010.04.008
- Di Blasio , G. , Beatrice , C. , Ianniello , R. et al. Balancing Hydraulic Flow and Fuel Injection Parameters for Low-Emission and High-Efficiency Automotive Diesel Engines SAE Int. J. Advances & Curr. Prac. in Mobility 2 2 2020 638 652 10.4271/2019-24-0111
- Di Blasio , G. , Vassallo , A. , Pesce , F.C. et al. The Key Role of Advanced, Flexible Fuel Injection Systems to Match the Future CO 2 Targets in an Ultra-Light Mid-Size Diesel Engine SAE International Journal of Engines 12 2 2019 129 144 https://doi.org/10.4271/03-12-02-0010
- Matsuo , Y. , Ishimaru , S. , Amano , M. et al. Development of Highly Efficient Lean NO x Catalyst System in Low Exhaust Gas Temperature SAE Technical Paper 2013-01-0536 2013 https://doi.org/10.4271/2013-01-0536
- Kumar , B.R. , and Saravanan , S. Effect of Exhaust Gas Recirculation (EGR) on Performance and Emissions of a Constant Speed DI Diesel Engine Fueled with Pentanol/Diesel Blends Fuel 160 nov.15 217 226 2015
- Tatur , M. , Koehler , E. , Laermann , M. et al. Lean NO x Trap for Heavy-Duty On-Road Applications - A Feasible Alternative SAE Technical Paper 2007-01-4179 2007 https://doi.org/10.4271/2007-01-4179
- Beatrice , C. , Rispoli , N. , Di Blasio , G. et al. Impact of Emerging Engine and After-Treatment Technologies for Improved Fuel Efficiency and Emission Reduction for the Future Rail Diesel Engines Emiss. Control Sci. Technol. 2 2016 99 112 10.1007/s40825-016-0035-1
- Caliskan , H. and Mori , K. Environmental, Enviroeconomic and Enhanced Thermodynamic Analyses of a Diesel Engine with Diesel Oxidation Catalyst (DOC) and Diesel Particulate Filter (DPF) After Treatment Systems Energy 128 2017 128 144 10.1016/j.energy.2017.04.014
- Liao , Y. , Furrer , R. , Eggenschwiler , P.D. et al. Experimental Investigation of the Heat Transfer Characteristics of Spray/wall Interaction in Diesel Selective Catalytic Reduction Systems Fuel 190 2017 163 173 10.1016/j.fuel.2016.11.035
- Mohan , B. , Yang , W. , and Chou , S.K. Fuel Injection Strategies for Performance Improvement and Emissions Reduction in Compression Ignition Engines—a Review Renewable and Sustainable Energy Reviews 28 dec. 664 676 2013
- Wu , Y. , Wang , P. , Farhan , S.M. et al. Effect of Post-injection on Combustion and Exhaust Emissions in DI Diesel Engine Fuel 258 2019 116131 10.1016/j.fuel.2019.116131
- Zheng , Z. , Yue , L. , Liu , H. et al. Effect of Two-Stage Injection on Combustion and Emissions Under High EGR Rate on a Diesel Engine by Fueling Blends of Diesel/Gasoline, Diesel/n-Butanol, Diesel/Gasoline/n-Butanol and Pure Diesel Energy Conversion and Management 90 2015 1 11 10.1016/j.enconman.2014.11.011
- Arregle , J. , Pastor , J.V. , Lopez , J.J. , et al. Insights on Postinjection-associated Soot Emissions in Direct Injection Diesel Engines Combustion & Flame 154 3 448 461 2008
- Liu , W. , and Song , C. Effect of Post Injection Strategy on Regulated Exhaust Emissions and Particulate Matter in a HSDI Diesel Engine Fuel 185 dec.1 1 9 2016
- Yoon , H. and Bae , C. Post Injection in a Compression Ignition Engine Fueled with Dimethyl-ether Fuel 103 Jan. 2013 1123 1131 10.1016/j.fuel.2012.10.025
- Chen , P.C. , Wang , W.C. , Roberts , W.L. et al. Spray and Atomization of Diesel Fuel and its Alternatives from a Single-Hole Injector Using a Common Rail Fuel Injection System Fuel 103 2013 850 861 10.1016/j.fuel.2012.08.013
- Dimitriou , P. , Wang , W. , and Peng , Z. A Piston Geometry and Nozzle Spray Angle Investigation in a DI Diesel Engine by Quantifying the Air-fuel Mixture International Journal of Spray and Combustion Dynamics 7 1 2015 1 24 10.1260/1756-8277.7.1.1
- Lechner , G.A. , Jacobs , T.J. , Chryssakis , C.A. et al. Evaluation of a Narrow Spray Cone Angle, Advanced Injection Timing Strategy to Achieve Partially Premixed Compression Ignition Combustion in a Diesel Engine SAE Technical Papers 2005-01-0167 2005 https://doi.org/10.4271/2005-01-0167
- Siewert , R.M. Spray Angle and Rail Pressure Study for Low NO x Diesel Combustion SAE Technical Papers 2007-01-0122 2007 https://doi.org/10.4271/2005-01-0167
- Fuchs , T.R. and Rutland , C.J. Intake Flow Effects on Combustion and Emissions in a Diesel Engine SAE Technical Papers 980508 1998 https://doi.org/10.4271/980508
- Henein , N.A. , Lai , M.C. , Singh , I. et al. Emissions Trade-Off and Combustion Characteristics of a High-Speed Direct Injection Diesel Engine SAE Technical Papers 2001-01-0197 2001 https://doi.org/10.4271/2001-01-0197
- Helmantel , A. Reduction of NO x Emissions from a Light Duty DI Diesel Engine in Medium Load Conditions with High EGR Rates SAE Technical Papers 2008-01-0643 2008 https://doi.org/10.4271/2008-01-0643
- Mccracken , M.E. and Abraham , J. Swirl-Spray Interactions in a Diesel Engine SAE Technical Papers 2001-01-0996 2001 https://doi.org/10.4271/2001-01-0996
- Wei , S. , Wang , F. , Leng , X. , et al. Numerical Analysis on the Effect of Swirl Ratios on Swirl Chamber Combustion System of DI Diesel Engines Energy Conversion and Management 75 nov. 184 190 2013
- Hanjalić , K. , Popovac , M. , and Hadžiabdić , M. A Robust Nearwall Elliptic-Relaxation Eddy-Viscosity Turbulence Model for CFD International Journal of Heat and Fluid Flow 25 6 2004 1047 1051 10.1016/j.ijheatfluidflow.2004.07.005
- Uludogan , A. , Foster , D. , and Reitz , R. Modeling the Effect of Engine Speed on the Combustion Process and Emissions in a DI Diesel Engine SAE Technical Paper 962056 1996 https://doi.org/10.4271/962056
- Dukowicz , J.K. A Particle-Fluid Numerical Model for Liquid Sprays Journal of Computational Physics 35 1980 229 253 10.1016/0021-9991(80)90087-X
- Liu , A.B. , Mather , D. , and Reitz , R.D. Modeling the Effects of Drop Drag and Breakup on Fuel Sprays SAE Technical Papers 930072 1993 https://doi.org/10.4271/930072
- Colin , O. and Benkenida , A. The 3-Zones Extended Coherent Flame Model (ECFM3Z) for Computing Premixed/ Diffusion Combustion Oil & Gas Science and Technology 59 6 2004 593 609 10.2516/ogst:2004043
- Priesching , P. , Ramusch , G. , Ruetz , J. et al. 3D-CFD Modeling of Conventional and Alternative Diesel Combustion and Pollutant Formation - A Validation Study SAE Technical Paper, 2007-01-1907 2007 https://doi.org/10.4271/2007-01-1907
- He , S. , Du , B. , Feng , L. et al. A Numerical Study on Combustion and Emission Characteristics of a Medium-Speed Diesel Engine Using In-Cylinder Cleaning Technologies Energies 8 2015 4118 4137 10.3390/en8054118