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A Numerical Investigation of Mixture Formation and Combustion Characteristics of a Hydrogen-Diesel Dual Direct Injection Engine
Technical Paper
2021-01-0526
ISSN: 0148-7191, e-ISSN: 2688-3627
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SAE WCX Digital Summit
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English
Abstract
A hydrogen-diesel dual direct injection (H2DDI) combustion strategy in a compression-ignition engine is investigated numerically, reproducing the configuration of previous experimental investigations. These experiments demonstrated the potential of up to 50% diesel substitution by hydrogen while maintaining high engine efficiency; nevertheless, the emission of NOx increased compared with diesel operation and was strongly dependent on the hydrogen injection timing. This implies the efficiency and NOx emission are closely associated with hydrogen charge stratification; however, the underlying mechanisms are not fully understood. Aiming to highlight the hydrogen injection-timing influence on hydrogen/air mixture stratification and engine performance, the present study numerically investigates the mixture formation and combustion process in the H2DDI engine concept using Converge, a three-dimensional fluid dynamics simulation code. Increased hydrogen stratification levels are realised by retarding the hydrogen injection timing from 180 °CA to 40 °CA bTDC at fixed energy substitution ratio of 50%, as in the experiments. The simulations are validated against the measured pressure and apparent heat release rate traces. The simulation results show that early hydrogen injection yields an almost homogeneous mixture with entire hydrogen charge being in fuel-lean conditions, leading to a primarily premixed combustion process of the hydrogen fuel. The intermediate injection timings produce a moderately stratified hydrogen mixture with much of the hydrogen at near-stoichiometric conditions, which achieves the highest engine efficiency but also the highest NOx emissions. The late injection forms a highly stratified charge with most hydrogen mixtures in fuel-rich conditions, presenting a mixing-controlled combustion process. This combustion mode induces the lowest wall heat loss and the lowest NOx emissions, but yields a relatively high fraction of unburnt hydrogen and efficiency penalty.
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Authors
- Ye Wang - University of New South Wales
- Annabelle Evans - University of New South Wales
- Ales Srna - University of New South Wales
- Armin Wehrfritz - University of New South Wales
- Evatt Hawkes - University of New South Wales
- Xinyu Liu - University of New South Wales
- Sanghoon Kook - University of New South Wales
- Qing Nian Chan - University of New South Wales
Topic
Citation
Wang, Y., Evans, A., Srna, A., Wehrfritz, A. et al., "A Numerical Investigation of Mixture Formation and Combustion Characteristics of a Hydrogen-Diesel Dual Direct Injection Engine," SAE Technical Paper 2021-01-0526, 2021, https://doi.org/10.4271/2021-01-0526.Data Sets - Support Documents
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References
- Verhelst , S. and Wallner , T. Hydrogen-Fueled Internal Combustion Engines Progress in Energy and Combustion Science 35 6 490 527 2009 10.1016/j.pecs.2009.08.001
- Verhelst , S. Recent Progress in the Use of Hydrogen as a Fuel for Internal Combustion Engines International Journal of Hydrogen Energy 39 2 1071 1085 2014 10.1016/j.ijhydene.2013.10.102
- Yip , H.L. , Srna , A. , Yuen , A.C.Y. , Kook , S. et al. A Review of Hydrogen Direct Injection for Internal Combustion Engines: Towards Carbon-Free Combustion Applied Sciences 9 22 2019 10.3390/app9224842
- Welch , A. , Mumford , D. , Munshi , S. , Holbery , J. et al. Challenges in Developing Hydrogen Direct Injection Technology for Internal Combustion Engines SAE Technical Paper 2008-01-2379 2008 https://doi.org/10.4271/2008-01-2379
- Matthias , N.S. , Wallner , T. , and Scarcelli , R. A Hydrogen Direct Injection Engine Concept that Exceeds U.S. DOE Light-Duty Efficiency Targets SAE Int. J. Engines 5 3 838 849 2012 https://doi.org/10.4271/2012-01-0653
- Scarcelli , R. , Wallner , T. , Salazar , V.M. , and Kaiser , S.A. Modeling and Experiments on Mixture Formation in a Hydrogen Direct-Injection Research Engine SAE Int. J. Engines 2 2 530 541 2010 https://doi.org/10.4271/2009-24-0083
- Salazar , V.M. and Kaiser , S.A. An Optical Study of Mixture Preparation in a Hydrogen-Fueled Engine with Direct Injection Using Different Nozzle Designs SAE Int. J. Engines 2 2 119 131 2010 https://doi.org/10.4271/2009-01-2682
- Scarcelli , R. , Wallner , T. , Matthias , N. , Salazar , V. et al. Mixture Formation in Direct Injection Hydrogen Engines CFD and Optical Analysis of Single- and Multi-Hole Nozzles SAE Int. J. Engines 4 2 2361 2375 2011 https://doi.org/10.4271/2011-24-0096
- Kaiser , S. and White , C.M. PIV and PLIF to Evaluate Mixture Formation in a Direct-Injection Hydrogen-Fuelled Engine SAE Int. J. Engine 1 1 657 668 2009 https://doi.org/10.4271/2008-01-1034
- Wimmer , A. , Wallner , T. , Ringler , J. , and Gerbig , F. H2-Direct Injection - A Highly Promising Combustion Concept SAE Technical Paper 2005-01-0108 2005 https://doi.org/10.4271/2005-01-0108
- Takagi , Y. , Mori , H. , Mihara , Y. , Kawahara , N. et al. Improvement of Thermal Efficiency and Reduction of NOx Emissions by Burning a Controlled Jet Plume in High-Pressure Direct-Injection Hydrogen Engines International Journal of Hydrogen Energy 42 41 26114 26122 2017 10.1016/j.ijhydene.2017.08.015.
- Roy , M.K. , Kawahara , N. , Tomita , E. , and Fujitani , T. Jet-Guided Combustion Characteristics and Local Fuel Concentration Measurements in a Hydrogen Direct-Injection Spark-Ignition Engine Proceedings of the Combustion Institute 34 2 2977 2984 2013 10.1016/j.proci.2012.06.103
- Rosati , M.F. and Aleiferis , P.G. Hydrogen SI and HCCI Combustion in a Direct-Injection Optical Engine SAE Int. J. Engines 2 1 1710 1736 2009 https://doi.org/10.4271/2009-01-1921
- Heindl , R. , Eichlseder , H. , Spuller , C. , Gerbig , F. et al. New and Innovative Combustion Systems for the H2-ICE: Compression Ignition and Combined Processes SAE Int. J. Engines 2 1 1231 1250 2009 https://doi.org/10.4271/2009-01-1421
- White , C. , Steeper , R. , and Lutz , A. The Hydrogen-Fueled Internal Combustion Engine: A Technical Review International Journal of Hydrogen Energy 31 10 1292 1305 2005 10.1016/j.ijhydene.2005.12.001
- Narioka , Y. , Yokoyama , T. , Iio , S. , and Takagi , Y. HCCI Combustion Characteristics of Hydrogen and Hydrogen-Rich Natural Gas Reformate Supported by DME Supplement SAE Technical Paper 2006-01-0628 2006 https://doi.org/10.4271/2006-01-0628
- Vavra , J. , Bortel , I. , and Takats , M. Dual Fuel , A. Hydrogen - Diesel Compression Ignition Engine and Its Potential Application in Road Transport SAE Technical Paper 2019-01-0564 2019 https://doi.org/10.4271/2019-01-0564
- Wei , L. and Geng , P. A Review on Natural Gas/Diesel Dual Fuel Combustion, Emissions and Performance Fuel Processing Technology 142 264 278 2016 10.1016/j.fuproc.2015.09.018
- Liu , X. , Srna , A. , Yip , H.L. , Kook , S. et al. Performance and Emissions of Hydrogen-Diesel Dual Direct Injection (H2DDI) in a Single-Cylinder Compression-Ignition Engine International Journal of Hydrogen Energy 2020 10.1016/j.ijhydene.2020.10.006
- Kavtaradze , R.Z. , Natriashvili , T.M. , Glonti , M.G. , Wang , Y. et al. Local Heat Transfer in the Combustion Chamber of a Hydrogen Diesel Russian Engineering Research 39 10 831 836 2019 10.3103/S1068798X19100137.
- Richards , K.J. , Senecal , P.K. , and Pomraning , E. Converge 3.0 Madison, WI Convergent Science 2020
- Yakhot , V. and Orszag , S.A. Renormalization Group Analysis of Turbulence. I. Basic Theory Journal of Scientific Computing 1 1 3 51 1986 10.1007/BF01061452
- Amsden , A.A. KIVA-3V: A Block-Structured KIVA Program for Engines with Vertical or Canted Valves United States 1997 10.2172/505339
- Luo , Z. , Som , S. , Sarathy , S.M. , Plomer , M. et al. Development and Validation of an n-Dodecane Skeletal Mechanism for Spray Combustion Applications Combustion Theory and Modelling 18 2 187 203 2014 10.1080/13647830.2013.872807
- Yao , T. , Pei , Y. , Zhong , B.-J. , Som , S. et al. A Compact Skeletal Mechanism for n-Dodecane with Optimized Semi-Global Low-Temperature Chemistry for Diesel Engine Simulations Fuel 191 339 349 2017 10.1016/j.fuel.2016.11.083
- Reitz , R.D. and Diwakar , R. Structure of High-Pressure Fuel Sprays SAE Technical Paper 870598 1987 https://doi.org/10.4271/870598
- Reitz , R.D. Mechanism of Breakup of Round Liquid Jets Encyclopedia of Fluid Mechanics 10 1986
- Schmidt , D.P. and Rutland , C.J. A New Droplet Collision Algorithm Journal of Computational Physics 164 1 62 80 2000 10.1006/jcph.2000.6568
- Post , S.L. and Abraham , J. Modeling the Outcome of Drop-Drop Collisions in Diesel Sprays International Journal of Multiphase Flow 28 6 997 1019 2002 10.1016/S0301-9322(02)00007-1
- Liu , A.B. , Mather , D. , and Reitz , R.D. Modeling the Effects of Drop Drag and Breakup on Fuel Sprays SAE Technical Paper 930072 1993 https://doi.org/10.4271/930072
- O'Rourke , P.J. Statistical Properties and Numerical Implementation of a Model for Droplet Dispersion in a Turbulent Gas Journal of Computational Physics 83 2 345 360 1989 10.1016/0021-9991(89)90123-X
- Naber , J.D. and Reitz , R.D. Modeling Engine Spray/Wall Impingement SAE Technical Paper 880107 1998 https://doi.org/10.4271/880107
- Amsden , A.A. , O'Rourke , P.J. , and Butler , T.D. KIVA-II: A Computer Program for Chemically Reactive Flows With Sprays United States 1989 10.2172/6228444
- Senecal , P.K. , Pomraning , E. , Richards , K.J. , Briggs , T.E. et al. Multi-Dimensional Modeling of Direct-Injection Diesel Spray Liquid Length and Flame Lift-Off Length using CFD and Parallel Detailed Chemistry SAE Technical Paper 2003-01-1043 2003 https://doi.org/10.4271/2003-01-1043
- Babajimopoulos , A. , Assanis , D.N. , Flowers , D.L. , Aceves , S.M. et al. A Fully Coupled Computational Fluid Dynamics and Multi-Zone Model with Detailed Chemical Kinetics for the Simulation of Premixed Charge Compression Ignition Engines International Journal of Engine Research 6 5 497 512 2005 10.1243/146808705X30503
- Raju , M. , Wang , M. , Dai , M. , Piggott , W. et al. Acceleration of Detailed Chemical Kinetics Using Multi-Zone Modeling for CFD in Internal Combustion Engine Simulations SAE Technical Paper 2012-01-0135 2012 https://doi.org/10.4271/2012-01-0135
- Senecal , P.K. , Pomraning , E. , Anders , J.W. , Weber , M.R. et al. Predictions of Transient Flame Lift-Off Length With Comparison to Single-Cylinder Optical Engine Experiments Journal of Engineering for Gas Turbines and Power 136 11 2014 10.1115/1.4027653
- Heywood , J.B. Combustion in Compression-Ignition Engines Internal Combustion Engine Fundamentals 522 562 1988
- Richards , K.J. , Senecal , P.K. , and Pomraning , E. Converge 3.0 Manual Madison, WI Convergent Science 2020
- Issa , R.I. Solution of the Implicitly Discretised Fluid Flow Equations by Operator-Splitting Journal of Computational Physics 62 1 40 65 1986 10.1016/0021-9991(86)90099-9
- Senecal , P.K. , Richards , K.J. , Pomraning , E. , Yang , T. et al. A New Parallel Cut-Cell Cartesian CFD Code for Rapid Grid Generation Applied to In-Cylinder Diesel Engine Simulations SAE Technical Paper 2007-01-0159 2007 10.4271/2007-01-0159
- Som , S. and Aggarwal , S.K. Effects of Primary Breakup Modeling on Spray and Combustion Characteristics of Compression Ignition Engines Combustion and Flame 157 6 1179 1193 2010 10.1016/j.combustflame.2010.02.018
- Wallner , T. , Nande , A.M. , and Naber , J. Evaluation of Injector Location and Nozzle Design in a Direct-Injection Hydrogen Research Engine SAE Technical Paper 2008-01-1785 2008 https://doi.org/10.4271/2008-01-1785
- Wenming , Y. and Meng , Y. Phi-T Map Analysis on RCCI Engine Fueled by Methanol and Biodiesel Energy 187 115958 2019 10.1016/j.energy.2019.115958
- Neely , G.D. , Sasaki , S. , Huang , Y. , Leet , J.A. et al. New Diesel Emission Control Strategy to Meet US Tier 2 Emissions Regulations SAE Technical Paper 2005-01-1091 2005 https://doi.org/10.4271/2005-01-1091