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Investigation on Knock Resistance with Turbulent Jet Ignition at Different Engine Load in an Optical Engine
Technical Paper
2019-01-2151
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This research was focused on the effect of pre-chamber ignition and compared the knock limit of normal spark ignition in the main chamber and pre-chamber jet ignition combustion in a spark ignition gasoline engine. Experiments were conducted in a single-cylinder engine with optical access. Engine was operated with stoichiometric air/fuel mixtures at 1200 rev/min and different inlet pressures of 1, 1.2, and 1.4 bar. No auxiliary fuel was injected into the pre-chamber when jet-ignition mode was used. The results show that significant knock limit extension can be realized with use of a pre-chamber ignition unit. The main differences in engine performance, heat release and combustion, knock resistance and flame propagation were compared between the pre-chamber ignition and conventional spark ignition in the main chamber by in-cylinder pressure measurements and high-speed flame chemiluminescence imaging.
Pre-chamber ignition is capable of extending the knock limit over conventional spark ignition combustion due to the burn rate enhancement. Pre-chamber ignition lowered the CoV of IMEP. For instance, at inlet pressure 1.2 bar and common spark timing 18 °CA bTDC, CoV of IMEP with pre-chamber ignition was only around 2%, whereas normal SI reached almost 4.5%. At inlet pressure 1.0 bar, IMEP is lower with jet ignition comparing with normal SI but at elevated inlet pressures of 1.2 bar and 1.4bar pre-chamber ignition always produces higher IMEPs. The knock intensity increased as the inlet air pressure increased and spark timing advanced. The high speed combustion images show that incomplete combustion of ignition jets was present during the knocking combustion cycle.
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Citation
Bureshaid, K., Shimura, R., Zhao, H., Feng, D. et al., "Investigation on Knock Resistance with Turbulent Jet Ignition at Different Engine Load in an Optical Engine," SAE Technical Paper 2019-01-2151, 2019, https://doi.org/10.4271/2019-01-2151.Data Sets - Support Documents
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References
- Tully , E. and Heywood , J. Lean-Burn Characteristics of a Gasoline Engine Enriched with Hydrogen Plasmatron Fuel Reformer SAE Technical Paper 2003-01-0630 2003 https://doi.org/10.4271/2003-01-0630
- Toulson , E. , Watson , H. , and Attard , W. The Lean Limit and Emissions at Near-Idle for a Gasoline HAJI System with Alternative Pre-Chamber Fuels SAE Technical Paper 2007-24-0120 2007 https://doi.org/10.4271/2007-24-0120
- Cairns , A. , Stansfield , P. , Fraser , N. , Blaxill , H. et al. A Study of Gasoline-Alcohol Blended Fuels in an Advanced Turbocharged DISI Engine SAE Int. J. Fuels Lubr. 2 1 41 57 2009 https://doi.org/10.4271/2009-01-0138
- 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 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 10.4271/2015-01-0386
- Attard , W. 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. Methodology for Combustion Analysis of a Spark Ignition Engine Incorporating aPre-Chamber Combustor SAE Technical Paper 2014-01-2603 2014 10.4271/2014-01-2603
- Heywood , J.B. Automotive Engines and Fuels: A Review of Future Options Progress in Energy and Combustion Science 7 3 155 184 1981
- Dale , J. D. , Checkel , M. D. and Smy , P. R. Application of High Energy Ignition Systems to Engines Progress in Energy and Combustion Science 1997 23 5-6 379 398
- Turkish , M.C. 3-Valve Stratified Charge Engines: Evolvement, Analysis and Progression SAE Technical Paper 741163 1974 10.4271/741163
- Noguchi , N. , Sanda , S. and Nakamura , N. Development of Toyota Lean Burn Engine SAE Technical Paper 760757 1976 10.4271/760757
- Gussak , L.A. , Karpov , V.P. and Tikhonov , Y.Y. The Application of the Lag-Process in Pre-chamber Engines SAE Technical Paper 790692 1979 10.4271/790692
- Maxson , J.A. , Hensinger , D.M. , Horn , K. , and Oppenheim , A.K. Performance of Multiple Stream Pulsed Jet Combustion Systems SAE Technical Paper 910565 1991 10.4271/910565
- Latsch , R. The Swirl Chamber Spark Plug: A Means of Faster, More Uniform Energy Conversion in the Spark Ignition Engine SAE Technical Paper 840455 1984 10.4271/840455
- Toulson , E. , Watson , H.C. , and Attard , W.P. 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
- Lezanski , T. , Kesler , M. , Rychter , T. , Teodorczyk , A. , and Wolanski , P. Performance of a Pulsed Jet Combustion (PJC) System in a Research Engine SAE Technical Paper 932709 1993 10.4271/932709
- Kito , S. , Wakai , K. , Takahashi , S. , Fukaya , N. , and Takada , Y. Ignition Limit of Lean Mixture by Hydrogen Flame Jet Ignition JSAE Review 2000 21 3 373 378
- Couet , S. , Higelin , P. , and Moreau , B. APIR: A New Firing Concept for the Internal Combustion Engines-Sensitivity to Knock and In-Cylinder Aerodynamics SAE Technical Paper 2001-01-1954 2001 10.4271/2001-01-1954
- Kettner , M. , Rothe , M. , Velji , A. , Spicher , U. , Kuhnert , D. , and Latsch , R. A New Flame Jet Concept to Improve the Inflammation of Lean Burn Mixtures in SI Engines SAE Technical Paper 2005-01-3688 2005 10.4271/2005-01-3688
- Najt , P.M. , Rask , R.B. , and Reuss , D.L. Dual Mode Engine Combustion Process 2003
- Kojic , A. , Hathout , J.-P. , Cook , D. , and Ahmed , J. Control of Auto-Ignition Timing for Combustion in Piston Engines by Pre-chamber Compression Ignition 2005
- Pape , J. , Getzlaff , J. , Gruenig , C. , Kuhnert , D. , and Latsch , R. Investigations on Pre-Chamber Spark Plug with Pilot Injection SAE Technical Paper 2007-01-0479 2007 10.4271/2007-01-0479
- Regueiro , J. The Case for New Divided-Chamber Diesel Combustion SystemsPart Two: Critical Analysis of, and Solutions for, Swirl-Pre-chamber Engines SAE Technical Paper 2001-01-0274 2001 https://doi.org/10.4271/2001-01-0274
- Toulson , E. , Watson , H. , and Attard , W. Gas Assisted Jet Ignition of Ultra-Lean LPG in a Spark Ignition Engine SAE Technical Paper 2009-01-0506 2009 https://doi.org/10.4271/2009-01-0506
- 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
- Moxey , B. , Cairns , A. , and Zhao , H. A Study of Turbulent Flame Development with Ethanol Fuels in an Optical Spark Ignition Engine SAE Technical Paper 2014-01-2622 2014 10.4271/2014-01-2622