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Simulation Research on Ultra-Lean Constant-Volume Combustion Initiated by Spark-Ignited Micro-Fuel-Jet
Technical Paper
2022-01-0432
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In the ultra-lean combustion mode, the combustion temperature is relatively low, which is expected to avoid the high-temperature NOx generation. And it also can use excess air to fully oxidize CO, HC and Soot, to achieve cleaner combustion. But at the same time, ultra-lean combustion has difficulties in ignition and flame propagation.
This paper used CONVERGE to simulate the combustion process and products of a new ultra-lean combustion mode, which ignited the ultra-lean premixed fuel/air mixture with the spark-ignited micro-fuel-jet, in a constant-volume vessel with a 6-hole GDI injector. The differences of combustion processes and products were simulated for two spark-ignition positions, including ‘on’ the micro-jet spray and ‘between’ two micro-jet sprays. It was found that the combustion duration (the time for burned-fuel-ratio from 10% to 90%) could be shortened by about 14.3% if igniting ‘on’ the micro-jet spray, but the amount of NOx generated would increase about 21.0%. Meanwhile, compared with the homogeneous premixed combustion with traditional spark ignition at the same global fuel/air ratio, the new ultra-lean combustion mode with igniting ‘on’ the micro-jet spray had lower CO and NOx emissions, reduced by 49.5% and 23.3% respectively. In addition, the three ultra-lean ignition methods all have extremely low Soot products. The heat release of this new mode was more concentrated with combustion duration shortened by about 20.2%, which would be beneficial to achieve more efficient and cleaner combustion.
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Citation
Long, Q., Li, M., Zhou, Y., Hu, Z. et al., "Simulation Research on Ultra-Lean Constant-Volume Combustion Initiated by Spark-Ignited Micro-Fuel-Jet," SAE Technical Paper 2022-01-0432, 2022, https://doi.org/10.4271/2022-01-0432.Also In
References
- Jichao , Y. , Dexin , L. , and Hongqing , F. Knock Property of Lean-Burn Gasoline Engine Journal of Combustion Science and Technology 2007 01 2007 72 75 10.3321/j.issn:1006-8740.2007.01.015
- Zhiqiang , Z. Research on Low Temperature Combustion of Diesel Engine Based on Injection Strategy and Ion Current Control Shanghai Tongji University 2014
- Zhiping , S. , Lianfang , Z. , Xian , L. , Yanfeng , G. et al. Comparative Study of Pre-Mixed and Stratified Lean Combustion Characteristics of GDI Engine Modern Vehicle Power 2019 01 2019 7 12 10.3969/j.issn.1671-5446.2019.01.002
- Ikeda , Y. , Nishiyama , A. , Kaneko , M. Microwave Enhanced Ignition Process for Fuel Mixture at Elevated Pressure of 1MPa 47th AIAA Aerospace Sciences Meeting Including the New Horizons Forum & Aerospace Exposition 2009 10.2514/6.2009-223
- Tomonori , U. , Kota , M. , and Masanari , S. The Combustion Technology Enabling the SKYACTIV-X Performance Mazda Technical Review 2019 36 2019 24 31 10.34338/mazdagihou.36.0_24
- Ritaro , I. , Koji , E. , and Masanari , S. New-Generation Gasoline Engine 'SKYACTIV -X' Mazda Technical Review 2019 36 2019 16 23 10.34338/mazdagihou.36.0_16
- Jian , W. , Jiawen , C. , Jiakun , D. , Hong , C. et al. Combustion and Emission Characteristics of a Lean Burn Gasoline Direct Injection Engine with Active Pre-Chamber Chinese Internal Combustion Engine Engineering 42 3 2021 55 60 10.13949/j.cnki.nrjgc.2021.03.008
- Wenyuan , C. , Huanxiang , X. , Shuaiying , M. , and Yirong , W. Experiment on a Homogeneous Lean Burn Gasoline Engine with High-Energy Ignition Transactions of CSICE 38 4 2020 298 303 10.16236/j.cnki.nrjxb.202004039
- Ikeda , Y. , Padala , S. , Makita , M. , and Nishiyama , A. Development of Innovative Microwave Plasma Ignition System with Compact Microwave Discharge Igniter SAE Technical Paper 2015-24-2434 2015 https://doi.org/10.4271/2015-24-2434
- Wang , Q. , Guixin , Z. , Yongxi , L. , Lingyun , H. et al. Visual Features of Microwave Ignition of Methane-Air Mixture in a Constant Volume Cylinder Applied Physics Letters 103 20 2013 3139 3146 10.1063/1.4830272
- Wang , Z. , Jian , H. , Qiang , W. , Lingyun , H. et al. Experimental Study of Microwave Resonance Plasma Ignition of Methane-Air Mixture in a Constant Volume Cylinder Combustion and Flame 162 6 2015 2561 2568 10.1016/j.combustflame.2015.03.004
- Nishiyama , A. , Ikeda , Y. , Serizawa , T. 2018 10.5445/IR/1000088587
- Zongjie , H. , Junjie , Z. , Magnus , S. , and Zeng , W. The Use of Partial Fuel Stratification to Enable Stable Ultra-Lean Deflagration-Based SPARK-Ignition Engine Operation with Controlled End-Gas Autoignition of Gasoline and E85 International Journal of Engine Research 21 9 2020 1678 1695 10.1177/1468087419889702
- Xu , C. , Som , S. , and Sjöberg , M. Large Eddy Simulation of Lean Mixed-Mode Combustion Assisted by Partial Fuel Stratification in a Spark-Ignition Engine ASME. Journal of Energy Resources Technology 143 7 2021 072304 10.1115/1.4050588
- 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
- Mehl , M. , Chen , J.Y. , Pitz , W.J. , Sarathy , S.M. et al. An Approach for Formulating Surrogates for Gasoline with Application toward a Reduced Surrogate Mechanism for CFD Engine Modeling Energy and Fuels 25 11 2011 5215 5223 10.1021/ef201099y
- Heywood , J.B. Internal Combustion Engine Fundamentals 2nd New York McGraw-Hill Education 2018
- Hiroyasu , H. , Kadota , T. , and Arai , M. Development and Use of a Spray Combustion Modeling to Predict Diesel Engine Efficiency and Pollutant Emissions : 1st Report, Combustion Modeling Transactions of the Japan Society of Mechanical Engineers Series B 1982