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Spark Ignition and Pre-Chamber Turbulent Jet Ignition Combustion Visualization
Technical Paper
2012-01-0823
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Natural gas is a promising alternative fuel as it is affordable, available worldwide, has high knock resistance and low carbon content. This study focuses on the combustion visualization of spark ignition combustion in an optical single cylinder engine using natural gas at several air to fuel ratios and speed-load operating points. In addition, Turbulent Jet Ignition optical images are compared to the baseline spark ignition images at the world-wide mapping point (1500 rev/min, 3.3 bar IMEPn) in order to provide insight into the relatively unknown phenomenon of Turbulent Jet Ignition combustion. Turbulent Jet Ignition is an advanced spark initiated pre-chamber combustion system for otherwise standard spark ignition engines found in current passenger vehicles. This next generation pre-chamber design simply replaces the spark plug in a conventional spark ignition engine. Turbulent Jet Ignition enables very fast burn rates due to the ignition system producing multiple, widely distributed ignition sites, which consume the main charge rapidly. This high energy ignition results from the partially combusted (reacting) pre-chamber products initiating combustion in the main chamber. The distributed ignition sites enable relatively small flame travel distances enabling short combustion durations and high burn rates. Multiple benefits include extending the knock limit and initiating combustion in very dilute mixtures (excess air and/or EGR), with dilution levels being comparable to other low temperature combustion technologies (HCCI), without the complex control drawbacks.
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Attard, W., 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.Also In
References
- Tully, E. Heywood, J. “Lean-Burn Characteristics of a Gasoline Engine Enriched with Hydrogen Plasmatron Fuel Reformer,” SAE Technical Paper 2003-01-0630 2003 10.4271/2003-01-0630
- Aleiferis, P.G. et al. Flame chemiluminescence studies of cyclic combustion variations and air-to-fuel ratio of the reacting mixture in a lean-burn stratified-charge spark-ignition engine Combustion and Flame 2004 136 1-2 72 90
- Ayala, F. Heywood, J. “Lean SI Engines: The Role of Combustion Variability in Defining Lean Limits,” SAE Technical Paper 2007-24-0030 2007 10.4271/2007-24-0030
- Das, A. Watson, H.C. Development of a Natural Gas Spark Ignition Engine for Optimum Performance Proceedings of the I MECH E Part D Journal of Automobile Engineering 1997 211 361 378
- Attard, W. Blaxill, H. “A Single Fuel Pre-Chamber Jet Ignition Powertrain Achieving High Load, High Efficiency and Near Zero NOx Emissions,” SAE Technical Paper 2011-01-2023 2011 10.4271/2011-01-2023
- Attard, W. Bassett, M. Parsons, P. 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 10.4271/2011-01-0664
- Toulson, E. Schock, H. Attard, W. “A Review of Pre-Chamber Initiated Jet Ignition Combustion Systems,” SAE Technical Paper 2010-01-2263 2010 10.4271/2010-01-2263
- Toulson, E. Watson, H. Attard, W. “Gas Assisted Jet Ignition of Ultra-Lean LPG in a Spark Ignition Engine,” SAE Technical Paper 2009-01-0506 2009 10.4271/2009-01-0506
- Lawrence, J. Hydrocarbon Emission from a HAJI Equipped Ultra Lean Burn Engine, PhD Thesis , in The Department of Mechanical Engineering 1999 The University of Melbourne
- Dale, J.D. Checkel, M.D. Smy, P.R. Application of High Energy Ignition Systems to Engines Progress in Energy and Combustion Science 1997 23 5-6 379 398
- Mittal, M. Hung, D. Zhu, G. Schock, H. “A Study of Fuel Impingement Analysis on In-Cylinder Surfaces in a Direct-Injection Spark-Ignition Engine with Gasoline and Ethanol-Gasoline Blended Fuels,” SAE Technical Paper 2010-01-2153 2010 10.4271/2010-01-2153
- Withrow, L. Bowditch, F. “Flame Photographs of Autoignition Induced by Combustion-Chamber Deposits,” SAE Technical Paper 520265 1952 10.4271/520265
- Lumsden, G. OudeNijeweme, D. Fraser, N. Blaxill, H. “Development of a Turbocharged Direct Injection Downsizing Demonstrator Engine,” SAE Int. J. Engines 2 1 1420 1432 2009 10.4271/2009-01-1503
- Heywood, J.B. Internal Combustion Engine Fundamentals International 1988 McGraw-Hill
- Quader, A. Kirwan, J. Grieve, M. “Engine Performance and Emissions near the Dilute Limit with Hydrogen Enrichment using an On-Board Reforming Strategy,” SAE Technical Paper 2003-01-1356 2003 10.4271/2003-01-1356
- Babrausak, V. Ignition Handbook 2003 Issaquah. WA Fire Science Publishers
- Watson, H.C. Milkins, E.E. Comparison and Optimization of Emission Efficiency and Power of Five Automotive Fuels in One Engine International Journal of Vehicle Design 1982 3 4
- Allgeier, T. Klenk, M. Landenfeld, T. Conte, E. et al. “Advanced Emission and Fuel Economy Concept Using Combined Injection of Gasoline and Hydrogen in SI-Engines,” SAE Technical Paper 2004-01-1270 2004 10.4271/2004-01-1270
- Attard, W. 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 10.4271/2010-01-2196
- Attard, W. Fraser, N. Parsons, P. 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 10.4271/2010-01-1457
- Attard, W. 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 10.4271/2010-01-2260
- Attard, W. Kohn, J. 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 10.4271/2010-32-0088
- Gaydon, A.G. Wolfhard, H.G. Flames: Their Structure, Radiation and Temperature 1978 London Chapman and Hall
- Lauer, M. Sattelmayer, T. On the Adequacy of Chemiluminescence as a Measure of Heat Release in Turbulent Flames with Mixture Gradients Journal of Engineering for Gas Turbines and Power 2010 132
- Griffiths, J.F. Barnard, J.A. Flame and Combustion 3rd edition 1998 Springer 328