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Computational Investigation of the Effects of Injection Strategy and Rail Pressure on Isobaric Combustion in an Optical Compression Ignition Engine
Technical Paper
2021-24-0023
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The high-pressure isobaric combustion has been proposed as the most suitable combustion mode for the double compre4ssion expansion engine (DCEE) concept. Previous experimental and simulation studies have demonstrated an improved efficiency compared to the conventional diesel combustion (CDC) engine. In the current study, isobaric combustion was achieved using a single injector with multiple injections. Since this concept involves complex phenomena such as spray to spray interactions, the computational models were extensively validated against the optical engine experiment data, to ensure high-fidelity simulations. The considered optical diagnostic techniques are Mie-scattering, fuel tracer planar laser-induced fluorescence (PLIF), and natural flame luminosity imaging. Overall, a good agreement between the numerical and experimental results was obtained. Upon validation, the optimized models have been used to conduct a comparative study between the conventional diesel combustion (CDC) and the isobaric combustion cases with different pressure levels, in terms of engine performance and emissions. Compared to the CDC case, the isobaric combustion cases led to a lower NOx emission but higher sooting tendency due to the increased diffusion combustion feature, although most of the soot was oxidized in the later engine cycle. To further reduce soot emission, the effects of various rail pressures and injector holes number were evaluated. The results indicated that the higher injection pressure was more effective in soot reduction for the isobaric combustion case but it deteriorated the thermal efficiency. It was also found that increasing the number of injector holes from the reference six to ten led to the lowest soot emission without significantly affecting the efficiency.
Authors
- Hammam Aljabri - King Abdullah Univ of Science & Tech
- Xinlei Liu - King Abdullah Univ of Science & Tech
- Moaz Allehaibi - King Abdullah & Umm Al-Qura Universities
- Abdullah S. AlRamadan - Saudi Aramco
- Jihad Badra - Saudi Aramco
- Moez Ben Houidi - King Abdullah Univ of Science & Tech
- Bengt Johansson - Chalmers University of Technology
- Hong G. Im - King Abdullah Univ of Science & Tech
Topic
Citation
Aljabri, H., Liu, X., Allehaibi, M., AlRamadan, A. et al., "Computational Investigation of the Effects of Injection Strategy and Rail Pressure on Isobaric Combustion in an Optical Compression Ignition Engine," SAE Technical Paper 2021-24-0023, 2021, https://doi.org/10.4271/2021-24-0023.Data Sets - Support Documents
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References
- Change , I.C. Mitigation of Climate Change Contrib. Work. Gr. III to Fifth Assess. Rep. Intergov. Panel Clim. Chang . 1454 2014
- Kawamoto , R. , Mochizuki , H. , Moriguchi , Y. , Nakano , T. et al. Estimation of CO2 Emissions of Internal Combustion Engine Vehicle and Battery Electric Vehicle Using LCA Sustainability 11 9 2019 2690
- Montoya , J.P.G. , Diaz , G.J.A. , and Arrieta , A.A.A. Effect of Equivalence Ratio on Knocking Tendency in Spark Ignition Engines Fueled with Fuel Blends of Biogas, Natural Gas, Propane and Hydrogen Int. J. Hydrogen Energy 43 51 2018 23041 23049
- Tayama , K. Historical Development of Two Stroke Slow Speed Marine Diesel Engine Syst. Surv. Natl. Sci. Museum 8 2007 183 240
- Yang , B. , Yao , M. , Cheng , W.K. , Zheng , Z. et al. Regulated and Unregulated Emissions from a Compression Ignition Engine Under Low Temperature Combustion Fuelled with Gasoline and n-Butanol/Gasoline Blends Fuel 120 2014 163 170
- Kalghatgi , G.T. , Hildingsson , L. , Harrison , A.J. , and Johansson , B. Autoignition Quality of Gasoline Fuels in Partially Premixed Combustion in Diesel Engines Proc. Combust. Inst. 33 2 2011 3015 3021
- Dec , J.E. Advanced Compression-Ignition Engines—Understanding the In-Cylinder Processes Proc. Combust. Inst. 32 2 2009 2727 2742
- Tang , Q. , Liu , H. , Li , M. , Geng , C. et al. Multiple Optical Diagnostics on Effect of Fuel Stratification Degree on Reactivity Controlled Compression Ignition Fuel 202 2017 688 698
- Tang , Q. , Sampath , R. , Echeverri Marquez , M. , Sharma , P. et al. Optical Diagnostics on the Pre-Chamber Jet and Main Chamber Ignition in the Active Pre-Chamber Combustion (PCC) Combust. Flame 228 2021 218 235
- Lam , N. , Tuner , M. , Tunestal , P. , Andersson , A. et al. Double Compression Expansion Engine Concepts: A Path to High Efficiency SAE Int. J. Engines 8 4 2015 1562 1578
- Lam , N. , Andersson , A. , and Tunestal , P. Double Compression Expansion Engine Concepts: Efficiency Analysis Over a Load Range SAE Technical Paper 2018-01-0886 2018 https://doi.org/10.4271/2018-01-0886
- Okamoto , T. and Uchida , N. New Concept for Overcoming the Trade-off Between Thermal Efficiency, Each Loss and Exhaust Emissions in a Heavy Duty Diesel Engine SAE Int. J. Engines 9 2 2016 859 867
- Babayev , R. , Ben Houidi , M. , Andersson , A. , and Johansson , B. Isobaric Combustion: A Potential Path to High Efficiency, in Combination with the Double Compression Expansion Engine (DCEE) Concept SAE Technical Paper 2019-01-0085 2019 https://doi.org/10.4271/2019-01-0085
- Nyrenstedt , G. et al. A Comparative Study of Isobaric Combustion and Conventional Diesel Combustion in Both All-Metal and Optical Engines Fuel 295 November 2020 2021 120638
- Hill , S.C. and Smoot , L.D. Modeling of Nitrogen Oxides Formation and Destruction in Combustion Systems Prog. energy Combust. Sci. 26 4-6 2000 417 458
- Heywood , J.B. Internal Combustion Engine Fundamentals New York McGraw-Hill 1988
- Pickett , L.M. and Siebers , D.L. Soot in Diesel Fuel Jets: Effects of Ambient Temperature, Ambient Density, and Injection Pressure Combust. Flame 138 1-2 2004 114 135
- Henein , N.A. , Bhattacharyya , A. , Schipper , J. , Kastury , A. et al. Effect of Injection Pressure and Swirl Motion on Diesel Engine-Out Emissions in Conventional and Advanced Combustion Regimes SAE Technical Paper 2006-01-0076 2006 https://doi.org/10.4271/2006-01-0076
- İçıngür , Y. and Altiparmak , D. Effect of Fuel Cetane Number and Injection Pressure on a DI Diesel Engine Performance and Emissions Energy Convers. Manag. 44 3 2003 389 397
- Montgomery , D.T. , Chan , M. , Chang , C.T. , Farrell , P.V. et al. Effect of Injector Nozzle Hole Size and Number on Spray Characteristics and the Performance of a Heavy Duty DI Diesel Engine SAE Technical Paper 962002 1996 https://doi.org/10.4271/962002
- Millo , F. , Pautasso , E. , Delneri , D. , and Troberg , M. A DoE Analysis on the Effects of Compression Ratio, Injection Timing, Injector Nozzle Hole Size and Number on Performance and Emissions in a Diesel Marine Engine SAE Technical Paper 2007-01-0670 2007 https://doi.org/10.4271/2007-01-0670
- Desantes , J.M. , García-Oliver , J.M. , Pastor , J.M. , and Ramírez-Hernández , J.G. Influence of Nozzle Geometry on Ignition and Combustion for High-Speed Direct Injection Diesel Engines Under Cold Start Conditions Fuel 90 11 2011 3359 3368
- Lee , B.H. , Song , J.H. , Chang , Y.J. , and Jeon , C.H. Effect of the Number of Fuel Injector Holes on Characteristics of Combustion and Emissions in a Diesel Engine Int. J. Automot. Technol. 11 6 2010 783 791
- Tang , Q. , Sampath , R. , Sharma , P. , Nyrenstedt , G. et al. Optical Study on the Fuel Spray Characteristics of the Four-Consecutive-Injections Strategy Used in High-Pressure Isobaric Combustion SAE Technical Paper 2020-01-1129 2020 https://doi.org/10.4271/2020-01-1129
- Richards , K.J. , Senecal , P.K. , and Pomraning CONVERGE 3.0. 2020
- Aljabri , H.H. , Babayev , R. , Liu , X. , Badra , J. et al. Validation of Computational Models for Isobaric Combustion Engines SAE Technical Paper 2020-01-0806 2020 https://doi.org/10.4271/2020-01-0806
- Han , Z. and Reitz , R.D. Turbulence Modeling of Internal Combustion Engines Using RNG κ-ε Models Combust. Sci. Technol. 106 4-6 1995 267 295
- Reitz , R.D. Mechanism of Breakup of Round Liquid Jets Encycl. fluid Mech. 10 1986
- Schmidt , D.P. and Rutland , C.J. A New Droplet Collision Algorithm J. Comput. Phys. 164 1 2000 62 80
- Amsden , A.A. , O’Rourke , P.J. , and Butler , T.D. 1989
- Senecal , P.K. , Pomraning , E. , Richards , K. , Briggs , T. 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
- Wang , H. , Yao , M. , Yue , Z. , Jia , M. et al. A Reduced Toluene Reference Fuel Chemical Kinetic Mechanism for Combustion and Polycyclic-Aromatic Hydrocarbon Predictions Combust. Flame 162 6 2015 2390 2404
- Richards , K.J. , Senecal , P.K. , and Pomraning CONVERGE 3.0 Manual 2020
- Senecal , P.K. , Pomraning , E. , Richards , K.J. , and Som , S. Grid-Convergent Spray Models for Internal Combustion Engine CFD Simulations Internal Combustion Engine Division Fall Technical Conference 2012 55096 697 710
- Xu , L. , Bai , X.-S. , Jia , M. , Qian , Y. et al. Experimental and Modeling Study of Liquid Fuel Injection and Combustion in Diesel Engines with a Common Rail Injection System Appl. Energy 230 2018 287 304
- Kohashi , K. , Fujii , Y. , Kusaka , J. , and Daisho , Y. A Numerical Study on Ignition and Combustion of a DI Diesel Engine by Using CFD Code Combined with Detailed Chemical Kinetics SAE Technical Paper 2003-01-1847 2003 https://doi.org/10.4271/2003-01-1847
- Brijesh , P. and Sreedhara , S. Exhaust Emissions and Its Control Methods in Compression Ignition Engines: A Review Int. J. Automot. Technol. 14 2 2013 195 206
- Liu , X. , Aljabri , H. , Mohan , B. , Babayev , R. et al. A Numerical Investigation of Isobaric Combustion Strategy in a Compression Ignition Engine Int. J. Engine Res 2020 1468087420970376
- Hiroyasu , H. and Kadota , T. Models for Combustion and Formation of Nitric Oxide and Soot in Direct Injection Diesel Engines SAE Trans. 1976 513 526
- Nagle , J. and Strickland-Constable , R.F. Oxidation of Carbon Between 1000-2000°C Proceedings of the Fifth Conference on Carbon Pergamon 154 164 1962
- Liu , X. , Mohan , B. , and Im , H.G. Numerical Investigation of the Free and Ducted Fuel Injections Under Compression Ignition Conditions Energy Fuels 34 2020 14832 14842
- Liu , X. , Wang , H. , and Yao , M. Investigation of the Chemical Kinetics Process of Diesel Combustion in a Compression Ignition Engine Using the Large Eddy Simulation Approach Fuel 270 2020 117544