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The Potential of Gasoline Fueled Pre Chamber Ignition Combined with Elevated Compression Ratio
Technical Paper
2020-01-0279
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Pre-chamber ignition is a method to simultaneously increase the thermal efficiency and to meet ever more stringent emission regulations at the same time. In this study, a single cylinder research engine is equipped with a tailored pre-chamber ignition system and operated at two different compression ratios, namely 10.5 and 14.2. While most studies on gasoline pre-chamber ignition employ port fuel injection, in this work, the main fuel quantity is introduced by side direct injection into the combustion chamber to fully exploit the knock mitigation effect. Different pre-chamber design variants are evaluated considering both unfueled and gasoline-fueled operation. As for the latter, the influence of the fuel amount supplied to the pre-chamber is discussed. Due to its principle, the pre-chamber ignition system increases combustion speeds by generating enhanced in-cylinder turbulence and multiple ignition sites. This property proves to be an effective measure to mitigate knocking effects. It is shown that less spark retard compared to conventional spark ignition allows to exploit the efficiency benefit of elevated compression ratios also in high load operation for stoichiometric mixtures. Furthermore, auxiliary fueling of the pre-chamber enables ultra-lean combustion (λ=2.0) with very low NOx emission levels. Apart from decreased throttling losses lean burn assists to further suppress knocking in case of elevated compression ratios. Finally, it is demonstrated that the combination of ultra-lean combustion and elevated compression ratio leads to a significant improvement of the indicated efficiency with peak values of about 43 %. Higher PN emissions in low load and increased heat losses remain challenges of the used pre-chamber ignition system.
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Stadler, A., Sauerland, H., Härtl, M., and Wachtmeister, G., "The Potential of Gasoline Fueled Pre Chamber Ignition Combined with Elevated Compression Ratio," SAE Technical Paper 2020-01-0279, 2020, https://doi.org/10.4271/2020-01-0279.Data Sets - Support Documents
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References
- Gussak , L.A. , Ryabikov , O.B. , Politenkova , G.G. , and Furman , G.A. Effect of Adding Individual Combustion Products on Combustion of Methane-Air Mixture Russ Chem Bull 22 9 2128 1973 10.1007/BF00929436
- Gussak , L.A. , Ryabikov , O.B. , Politenkova , G.G. , and Furman , G.A. Yield of Atomic Hydrogen during Combustion of Methane and Hydrogen Mixtures with Air Russ Chem Bull 23 2 451 452 1974 10.1007/BF00924715
- Gussak , L.A. , Turkish , M.C. , and Siegla , D.C. 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
- 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
- Gussak , L.A. The Role of Chemical Activity and Turbulence Intensity in Prechamber-Torch Organization of Combustion of a Stationary Flow of a Fuel-Air Mixture SAE Technical Paper 830592 1983 https://doi.org/10.4271/830592
- Gussak , L.A. , Karpov , V.P. , Slutskii , V.G. , and Spasskii , A.I. Burning Rate and Stability in Forechamber Flame Ignition in an Internal-Combustion Engine Combust Explos Shock Waves 19 5 628 630 1983 10.1007/BF00750441
- Yamaguchi , S. , Ohiwa , N. , and Hasegawa , T. Ignition and Burning Process in a Divided Chamber Bomb Combustion and Flame 59 2 177 187 1985 10.1016/0010-2180(85)90023-9
- Oppenheim , A.K. , Beltramo , J. , Faris , D.W. , Maxson , J.A. et al. Combustion by Pulsed Jet Plumes - Key to Controlled Combustion Engines SAE Technical Paper 890153 1989 https://doi.org/10.4271/890153
- Maxson , J.A. , Hensinger , D.M. , Hom , K. , and Oppenheim , A.K. Performance of Multiple Stream Pulsed Jet Combustion Systems SAE Technical Paper 910565 1991 https://doi.org/10.4271/910565
- Maxson , J.A. and Oppenheim , A.K. Pulsed Jet Combustion-Key to a Refinement of the Stratified Charge Concept Symposium (International) on Combustion 23 1 1041 1046 1991 10.1016/S0082-0784(06)80362-0
- Hensinger , D.M. , Maxson , J.A. , Hom , K. , and Oppenheim , A.K. Jet Plume Injection and Combustion SAE Technical Paper 920414 1992 https://doi.org/10.4271/920414
- Murase , E. , Ono , S. , Hanada , K. , and Oppenheim , A.K. Pulsed Combustion Jet Ignition in Lean Mixtures SAE Technical Paper 942048 1994 https://doi.org/10.4271/942048
- 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
- Hamori , F. and Watson , H. Hydrogen Assisted Jet Ignition for the Hydrogen Fuelled SI Engine World Hydrogen Energy Conference 2006
- Kyaw , Z.H. and Watson , H.C. Hydrogen Assisted Jet Ignition for Near Elimination of NOx and Cyclic Variability in the S.I. Engine Symposium (International) on Combustion 24 1 1449 1455 1992 10.1016/S0082-0784(06)80169-4
- Glasson , N. , Lumsden , G. , Dingli , R. , and Watson , H. Development of the HAJI System for a Multi-Cylinder Spark Ignition Engine SAE Technical Paper 961104 1996 https://doi.org/10.4271/961104
- Lawrence , J. and Watson , H.C. Hydrocarbon Emissions from a HAJI Equipped Ultra-lean Burn SI Engine SAE Technical Paper 980044 1998 https://doi.org/10.4271/980044
- Toulson , E. , Watson , H.C. , and Attard , W.P. 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
- 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 https://doi.org/10.4271/2009-01-0506
- Kito , S. Ignition Limit of Lean Mixture by Hydrogen Flame Jet Ignition JSAE Review 21 3 373 378 2000 10.1016/S0389-4304(00)00057-6
- Getzlaff , J. , Pape , J. , Gruenig , C. , Kuhnert , D. et al. Investigations on Pre-Chamber Spark Plug with Pilot Injection SAE Technical Paper 2007-01-0479 2007 https://doi.org/10.4271/2007-01-0479
- Robinet , C. , Higelin , P. , Moreau , B. , Pajot , O. et al. A New Firing Concept for Internal Combustion Engines: “I'APIR” SAE Technical Paper 1999-01-0621 1999 https://doi.org/10.4271/1999-01-0621
- 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 https://doi.org/10.4271/2001-01-1954
- 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
- 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. 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. , 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. 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
- 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 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
- 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
- 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 Int. J. Engines 5 3 1201 1215 2012 https://doi.org/10.4271/2012-01-1143
- 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
- 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
- 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
- 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
- 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
- Sens , M. , Binder , E. , Benz , A. , Krämer , L. et al. Pre-Chamber Ignition as a Key Technology for Highly Efficient SI Engines - New Approaches and Operation Strategies 39. Wiener Motorensymposium 291 320
- Sens , M. , Binder , E. , Reinicke , P.-B. , Riess , M. et al. Pre-Chamber Ignition and Promising Complementary Technologies Pischinger , S. and Eckstein , L. 27th Aachen Colloquium Automobile and Engine Technology 2018 Aachen 2018 957 998
- Schumacher , M. and Wensing , M. A Gasoline Fuelled Pre-Chamber Ignition System for Homogeneous Lean Combustion Processes SAE Technical Paper 2016-01-2176 2016 https://doi.org/10.4271/2016-01-2176
- Baumgartner , L.S. , Karmann , S. , Backes , F. , Stadler , A. et al. Experimental Investigation of Orifice Design Effects on a Methane Fuelled Prechamber Gas Engine for Automotive Applications SAE Int. J. Engines 8 2 921 933 2017 https://doi.org/10.4271/2017-24-0096
- Stadler , A. , Wessoly , M. , Blochum , S. , Härtl , M. et al. Gasoline Fueled Pre-Chamber Ignition System for a Light-Duty Passenger Car Engine with Extended Lean Limit SAE Int. J. Engines 12 3 323 339 2019 https://doi.org/10.4271/03-12-03-0022
- Baumgartner , L.S. , Wohlgemuth , S. , Zirngibl , S. , and Wachtmeister , G. Investigation of a Methane Scavenged Prechamber for Increased Efficiency of a Lean-Burn Natural Gas Engine for Automotive Applications SAE Int. J. Engines 8 2 921 933 2015 https://doi.org/10.4271/2015-01-0866
- Peer , J. , Backes , F. , Sauerland , H. , Härtl , M. et al. Development of a High Turbulence, Low Particle Number, High Injection Pressure Gasoline Direct Injection Combustion System SAE Int. J. Engines 9 4 2301 2311 2016 https://doi.org/10.4271/2016-01-9046