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Ultra-Lean and High EGR Operation of Dual Mode, Turbulent Jet Ignition (DM-TJI) Engine with Active Pre-chamber Scavenging
Technical Paper
2020-01-1117
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Continuous efforts to improve thermal efficiency and reduce exhaust emissions of internal combustion engines have resulted in development of various solutions towards improved lean burn ignition systems in spark ignition engines. The Dual Mode, Turbulent Jet Ignition (DM-TJI) system is one of the leading technologies in that regard which offers higher thermal efficiency and reduced NOx emissions due to its ability to operate with very lean or highly dilute mixtures. Compared to other pre-chamber ignition technologies, the DM-TJI system has the distinct capability to work with a very high level of EGR dilution (up to ~40%). Thus, this system enables the use of a three-way catalyst (TWC). Auxiliary air supply for pre-chamber purge allows this system to work with such high EGR dilution rate. This work presents the results of experimental investigation carried out with a Dual Mode, Turbulent Jet Ignition (DM-TJI) optical engine equipped with a cooled EGR system. The results show that the DM-TJI engine could maintain stable operation (COVIMEP<2%) with 40% external EGR at stoichiometric (λ ~ 1) operating conditions. The relative timing between the auxiliary air and fuel inside the pre-chamber was found to be critical to maintaining successful operation at 40% EGR diluted condition. Ultra-lean (up to λ ~ 2) operation was also demonstrated at two different compression ratios with good combustion stability. A range of pre-chamber nozzle orifice diameters were tested with both lean and EGR diluted conditions. In general, smaller orifice diameters resulted in shorter overall burn duration due to more favorable distribution in ignition sites.
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Atis, C., Chowdhury, S., Ayele, Y., Stuecken, T. et al., "Ultra-Lean and High EGR Operation of Dual Mode, Turbulent Jet Ignition (DM-TJI) Engine with Active Pre-chamber Scavenging," SAE Technical Paper 2020-01-1117, 2020, https://doi.org/10.4271/2020-01-1117.Data Sets - Support Documents
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References
- 2 https://theicct.org/sites/default/files 2019
- Joshi , A. Review of Vehicle Engine Efficiency and Emissions SAE Int. J. Adv. Curr. Pr. Mobil. 11 6 734 761 2019 https://doi.org/10.4271/2018-01-0329
- 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 Int. J. Engines 3 2 20 37 2010 https://doi.org/10.4271/2010-01-1457
- Gussak , L.A. High Chemical Activity of Incomplete Combustion Products and a Method of Prechamber Torch Ignition for Avalanche Activation of Combustion in Internal Combustion Engines SAE Technical Paper 750890 . 1975 https://doi.org/10.4271/750890
- Toulson , E. , Schock , H.J. , and Attard , W.P. 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
- Bunce , M. , Blaxill , H. , Kulatilaka , W. , and Jiang , N. The Effects of Turbulent Jet Characteristics on Engine Performance Using a Pre-Chamber Combustor SAE Techncial Paper 2014-01-1195 2014 https://doi.org/10.4271/2014-01-1195
- Chinnathambi , P. , Bunce , M. , and Cruff , L. RANS Based Multidimensional Modeling of an Ultra-Lean Burn Pre-Chamber Combustion System with Auxiliary Liquid Gasoline Injection SAE Technical Paper 2015-01-0386 2015 https://doi.org/10.4271/2015-01-0386
- Bunce , M. and Blaxill , H. Methodology for Combustion Analysis of a Spark Ignition Engine Incorporating a Pre-Chamber Combustor SAE Technical Paper 2014-01-2603 2014 https://doi.org/10.4271/2014-01-2603
- Gentz , G. , Thelen , B. , Toulson , E. , Litke , P. , and Hoke , J. Combustion Visualization, Performance, and CFD Modeling of a Pre-Chamber Turbulent Jet Ignition System in a Rapid Compression Machine SAE Int. J. Engines 8 2 538 546 2015 https://doi.org/10.4271/2015-01-0779
- Attard , W.P. and Parsons , P. A Normally Aspirated Spark Initiated Combustion System Capable of High Load, High Efficiency and Near Zero NOx Emissions in a Modern Vehicle Powertrain SAE Int. J. Engines 3 2 269 287 2010 https://doi.org/10.4271/2010-01-2196
- 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 Int. J. Engines 3 2 408 427 2010 https://doi.org/10.4271/2010-01-2260
- Attard , W.P. , Kohn , J. , and Parsons , P. Ignition Energy Development for a Spark Initiated Combustion System Capable of High Load, High Efficiency and Near Zero NOx Emissions SAE Int. J. Engines 3 2 481 496 2010 https://doi.org/10.4271/2010-32-0088
- Attard , W.P. , Bassett , M. , Parsons , P. , and Blaxill , H. A New Combustion System Achieving High Drive Cycle Fuel Economy Improvements in a Modern Vehicle Powertrain SAE Technical Paper 2011-01-0664 2011 https://doi.org/10.4271/2011-01-0664
- Peters , N. , Bunce , M. , and Blaxill , H. The Impact of Engine Displacement on Efficiency Loss Pathways in a Highly Dilute Jet Ignition Engine SAE Technical Paper 2019-01-0330 2019 https://doi.org/10.4271/2019-01-0330
- 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
- Bunce , M. and Blaxill , H. Sub-200 g/kWh BSFC on a Light Duty Gasoline Engine SAE Technical Paper 2016-01-0709 2016 https://doi.org/10.4271/2016-01-0709
- Attard , W.P. and Blaxill , H. A Gasoline Fueled Pre-Chamber Jet Ignition Combustion System at Unthrottled Conditions SAE Int. J. Engines 5 2 315 329 2012 https://doi.org/10.4271/2012-01-0386
- Yoshida , T. , Sato , A. , Suzuki , H. , Tanabe , T. , and Takahashi , N. Development of High Performance Three-Way-Catalyst SAE Technical Paper 2006-01-1061 2006 https://doi.org/10.4271/2006-01-1061
- Heywood , J.B. Internal Combustion Engine Fundamentals Second McGraw-Hill Education 2018 9781260116106
- Yorobiev , Y.I. , Zharnov , V.M. , and Naumenko , V.D. 1985
- Vedula , R.T. , Song , R. , Stuecken , T. , Zhu , G.G. , and Schock , H. Thermal Efficiency of a Dual-Mode Turbulent Jet Ignition Engine under Lean and Near-Stoichiometric Operation Int. J. Engine Res. 18 10 1055 1066 2017 10.1177/1468087417699979
- Tolou , S. and Schock , H. Experiments and Modeling of a Dual-Mode, Turbulent Jet Ignition Engine Int. J. Engine Res. 2019 10.1177/1468087419875880
- Attard , W. 2012
- Attard , W.P. and Blaxill , H. A Single Fuel Pre-Chamber Jet Ignition Powertrain Achieving High Load, High Efficiency and Near Zero NOx Emissions SAE Int. J. Engines 5 3 734 746 2012 https://doi.org/10.4271/2011-01-2023
- Vedula , R.T. , Gentz , G. , Stuecken , T. , Toulson , E. , and Schock , H. Lean Burn Combustion of Iso-Octane in a Rapid Compression Machine Using Dual Mode Turbulent Jet Ignition System SAE Int. J. Engines 11 1 3 11 2018 https://doi.org/10.4271/03-11-01-0007
- Song , R. , Vedula , R.T. , Zhu , G. , and Schock , H. A Control-Oriented Combustion Model for a Turbulent Jet Ignition Engine Using Liquid Fuel Int. J. Engine Res. 2017 10.1177/1468087417731698
- Song , R. , Vedula , R.T. , Zhu , G. , and Schock , H. Optimal Combustion Phasing Control of a Turbulent Jet Ignition Engine Proc. Am. Control Conf 4 1610 1615 June 2018 10.23919/ACC.2018.8431841
- Vedula , R.T. Optical Investigations And Efficiency Measurements Of A Dual-Mode Turbulent Jet Ignition Engine Under Lean And High-Egr Near-Stoichiometric Conditions Michigan State University 2016
- Tolou , S. Experiments and Model Development of a Dual Mode Turbulent Jet Ignition Engine 2019
- Friedman , R. and Johnston , W.C. The Wall-Quenching of Laminar Propane Flames as a Function of Pressure, Temperature, and Air-Fuel Ratio J. Appl. Phys. 21 8 791 795 1950 10.1063/1.1699760
- Rassweiler , G.M. and Withrow , L. Motion Pictures of Engine Flames Correlated with Pressure Cards SAE Technical Paper 380139 1938 https://doi.org/10.4271/380139
- Womack Machine Supply Co
- Lavoie , G.A. , Ortiz-Soto , E. , Babajimopoulos , A. , Martz , J.B. , and Assanis , D.N. Thermodynamic Sweet Spot for Highefficiency, Dilute, Boosted Gasoline Engines Int. J. Engine Res. 14 3 260 278 2013 10.1177/1468087412455372