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Simultaneous Negative PLIF and OH* Chemiluminescence Imaging of the Gas Exchange and Flame Jet from a Narrow Throat Pre-Chamber
Technical Paper
2020-01-2080
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Pre-chamber combustion (PCC) is a promising engine combustion concept capable of extending the lean limit at part load. The engine experiments in the literature showed that the PCC could achieve higher engine thermal efficiency and much lower NOx emission than the spark-ignition engine. Improved understanding of the detailed flow and combustion physics of PCC is important for optimizing the PCC combustion. In this study, we investigated the gas exchange and flame jet from a narrow throat pre-chamber (PC) by only fueling the PC with methane in an optical engine. Simultaneous negative acetone planar laser-induced fluorescence (PLIF) imaging and OH* chemiluminescence imaging were applied to visualize the PC jet and flame jet from the PC, respectively. Results indicate a delay of the PC gas exchange relative to the built-up of the pressure difference (△ P) between PC and the main chamber (MC). This should be due to the gas inertia inside the PC and the resistance of the PC nozzle. The PC jet can be either continuous or intermittent depending on the △ P and pressure fluctuation amplitude. Distinct PC jet with low speed is witnessed after 15° CA ATDC, which could account for the post-combustion of the PCC engine in the literature. The probability distribution analysis of the PLIF and OH* images presents a much longer penetration length of the PC jet than that of the flame jet. This means that the flame jet resides in an atmosphere of the unburned gas mixture from the PC when it appears in the MC. The flame jet and PC jet show longer penetration length and become more stable with the enriching of the prechamber charge from lean to stoichiometric. However, the overall PC jet characteristics regarding the penetration length and probability distribution become less sensitive to the PC global excess air ratio (λ) when the PC charge is close to stoichiometry.
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Authors
- Qinglong Tang - King Abdullah University of Science & Technology
- Ramgopal Sampath - King Abdullah University of Science & Technology
- Manuel Echeverri Marquez - King Abdullah University of Science & Technology
- Ponnya Hlaing - King Abdullah University of Science & Technology
- Priybrat Sharma - King Abdullah University of Science & Technology
- Moez Ben Houidi - King Abdullah University of Science & Technology
- Emre Cenker - Saudi Aramco
- Junseok Chang - Saudi Aramco
- Gaetano Magnotti - King Abdullah University of Science & Technology
- Bengt Johansson - King Abdullah University of Science & Technology
Topic
Citation
Tang, Q., Sampath, R., Echeverri Marquez, M., Hlaing, P. et al., "Simultaneous Negative PLIF and OH* Chemiluminescence Imaging of the Gas Exchange and Flame Jet from a Narrow Throat Pre-Chamber," SAE Technical Paper 2020-01-2080, 2020, https://doi.org/10.4271/2020-01-2080.Data Sets - Support Documents
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References
- Gussak , L.A. , Karpov , V.P. , and Tikhonov , Y.V. The Application of Lag-Process in Prechamber Engines SAE Technical Paper 790692 1979 https://doi.org/10.4271/790692
- Toulson , E. , Schock , H. , and Attard , W. A Review of Pre-Chamber Initiated Jet Ignition Combustion Systems SAE Technical Paper 2010-01-2263 2010 https://doi.org/10.4271/2010-01-2263
- Attard , W.P. , Fraser , N. , Parsons , P. , and Toulson , E. A Turbulent Jet Ignition Pre-Chamber Combustion System for Large Fuel Economy Improvements in a Modern Vehicle Powertrain SAE Technical Paper 2010-01-1457 2010 https://doi.org/10.4271/2010-01-1457
- Attard , W.P. , and Blaxill , H. A Lean Burn Gasoline Fueled Pre-Chamber Jet Ignition Combustion System Achieving High Efficiency and Low NOx at Part Load SAE Technical Paper 2012-01-1146 2012 https://doi.org/10.4271/2012-01-1146
- Attard , W.P. , and Blaxill , H. A Gasoline Fueled Pre-Chamber Jet Ignition Combustion System at Unthrottled Conditions SAE International Journal of Engines 5 2 315 329 2012
- Attard , W.P. , and Parsons , P. Flame Kernel Development for a Spark Initiated Pre-Chamber Combustion System Capable of High Load, High Efficiency and Near Zero NOx Emissions SAE Technical Paper 2010-01-2260 2010 https://doi.org/10.4271/2010-01-2260
- Attard , W.P. , Blaxill , H. , Anderson , E.K. , and Litke , P. Knock Limit Extension with a Gasoline Fueled Pre-Chamber Jet Igniter in a Modern Vehicle Powertrain SAE International Journal of Engines 5 3 1201 1215 2012
- Shah , A. , Tunestal , P. , and Johansson , B. Effect of Pre-Chamber Volume and Nozzle Diameter on Pre-Chamber Ignition in Heavy Duty Natural Gas Engines SAE Technical Paper 2015-01-0867 2015 https://doi.org/10.4271/2015-01-0867
- Shah , A. , Tunestal , P. , and Johansson , B. Effect of Relative Mixture Strength on Performance of Divided Chamber ‘Avalanche Activated Combustion’ Ignition Technique in a Heavy Duty Natural Gas Engine SAE Technical Paper 2014-01-1327 2014 https://doi.org/10.4271/2014-01-1327
- Biswas , S. , and Qiao , L. Ignition of Ultra-Lean Premixed Hydrogen/Air by an Impinging Hot Jet Applied Energy 228 954 964 2018
- Biswas , S. , Tanvir , S. , Wang , H. , and Qiao , L. On Ignition Mechanisms of Premixed CH 4 /Air and H 2 /Air Using a Hot Turbulent Jet Generated by Pre-Chamber Combustion Applied Thermal Engineering 106 925 937 2016
- Murase , E. , and Hanada , K. Enhancement of Combustion by Injection of Radicals SAE Technical Paper 2000-01-0194 2000 https://doi.org/10.4271/2000-01-0194
- Gentz , G. , Thelen , B. , Litke , P. , Hoke , J. et al. Combustion Visualization, Performance, and CFD Modeling of a Pre-Chamber Turbulent Jet Ignition System in a Rapid Compression Machine SAE International Journal of Engines 8 2 538 546 2015
- Gentz , G.R. , and Toulson , E. Experimental Studies of a Liquid Propane Auxiliary Fueled Turbulent Jet Igniter in a Rapid Compression Machine SAE International Journal of Engines 9 2 777 785 2016
- Gentz , G. , Gholamisheeri , M. , and Toulson , E. A Study of a Turbulent Jet Isystem Fueled with Iso-Octane: Pressure Trace Analysis and Combustion Visualization Applied Energy 189 385 394 2017
- Murase , E. , and Hanada , K. Control of the Start of HCCI Combustion by Pulsed Flame Jet SAE Technical Paper 2002-01-2867 2002 https://doi.org/10.4271/2002-01-2867
- Kawabata , Y. , and Mori , D. Combustion Diagnostics and Improvement of a Prechamber Lean-Burn Natural Gas Engine SAE Technical Paper 2004-01-0979 2004 https://doi.org/10.4271/2004-01-0979
- Toulson , E. , Huisjen , A. , Chen , X. , Squibb , C. et al. Visualization of Propane and Natural Gas Spark Ignition and Turbulent Jet Ignition Combustion SAE International Journal of Engines 5 4 1821 1835 2012
- Attard , W.P. , Toulson , E. , Huisjen , A. , Chen , X. et al. Spark Ignition and Pre-Chamber Turbulent Jet Ignition Combustion Visualization SAE Technical Paper 2012-01-0823 2012 https://doi.org/10.4271/2012-01-0823
- Bunce , M. , Blaxill , H. , Kulatilaka , W. , and Jiang , N. The Effects of Turbulent Jet Characteristics on Engine Performance Using a Pre-Chamber Combustor SAE Technical Paper 2014-01-1195 2014 https://doi.org/10.4271/2014-01-1195
- Wellander , R. , Rosell , J. , Richter , M. , Alden , M. et al. Study of the Early Flame Development in a Spark-Ignited Lean Burn Four-Stroke Large Bore Gas Engine by Fuel Tracer PLIF SAE International Journal of Engines 7 2 928 936 2014
- Mastorakos , E. , Allison , P. , Giusti , A. , De Oliveira , P. et al. Fundamental Aspects of Jet Ignition for Natural Gas Engines SAE International Journal of Engines 10 5 2429 2438 2017
- Hlaing , P. , Marquez , M.E. , Singh , E. , Almatrafi , F. et al. Effect of Pre-Chamber Enrichment on Lean Burn Pre-Chamber Spark Ignition Combustion Concept with a Narrow-Throat Geometry SAE Technical Paper 2020-01-0825 2020 https://doi.org/10.4271/2020-01-0825
- Hlaing , P. , Echeverri Marquez , M. , Bhavani Shankar , V.S. , Cenker , E. et al. A Study of Lean Burn Pre-Chamber Concept in a Heavy Duty Engine SAE Technical Paper 2019-24-0107 2019 https://doi.org/10.4271/2019-24-0107
- Tang , Q. , An , Y. , Raman , V. , Shi , H. et al. Experimental Study on the Effects of Spray-Wall Interaction on Partially Premixed Combustion and Engine Emissions Energy & Fuels 33 6 5673 5681 2019
- 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 in SAE Technical Paper Series. 2020
- Miles , P.C. , Collin , R. , Leif , H. , Hultqvist , A. et al. Combined Measurements of Flow Structure, Partially Oxidized Fuel, and Soot in a High-Speed, Direct-Injection Diesel Engine Proceedings of the Combustion Institute 31 2963 2970 2007