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Double Injection Strategies for Ethanol-Fuelled Gasoline Compression Ignition (GCI) Combustion in a Single-Cylinder Light-Duty Diesel Engine
Technical Paper
2016-01-2303
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Ethanol has been selected as a fuel for gasoline compression ignition (GCI) engines realising partially premixed charge combustion, considering its higher resistance to auto-ignition, higher evaporative cooling and oxygen contents than widely used gasoline, all of which could further improve already high efficiency and low smoke/NOx emissions of GCI engines. The in-cylinder phenomena and engine-out emissions were measured in a single-cylinder automotive-size common-rail diesel engine with a special emphasis on double injection strategies implementing early first injection near BDC and late second injection near TDC. Three key parameters are investigated to optimise the double injection strategy including the proportion of the first and second injection mass, the first injection timing, and the second injection timing, while other operating conditions were held constant at the engine speed of 2000 rpm, intake air temperature of 80°C, common-rail pressure of 50 MPa, and indicated mean effective pressure (IMEP) of about 950 kPa. From the experiments, it is found that the higher proportion of the first injection results in higher in-cylinder pressure, pressure rise rate, and apparent heat release rate, which contributes to the increased indicated MEP (IMEP), indicated engine efficiency and reduced indicated specific fuel consumption (ISFC). However, the increased noise was problematic. The engine-out emissions of smoke, uHC, and CO also show a decreasing trend with increasing first-injection fraction; however, this leads to the increased NOx emissions due to the advanced combustion phasing and increased peak aHRR. Regarding the first injection timing variations, more advanced first injection tends to show improved performance due primarily to the extended pre-combustion mixing time and hence increased mixture homogeneity. The advanced first injection, however, increases the NOx emissions as the increased mixture homogeneity causes more advanced combustion phasing and thereby increasing the combustion temperature. For the second injection timing variations, the results exhibit that the decreased IMEP and increased ISFC limit the late second injection while it is the high noise and NOx emission to limit the early second injection. Compared with the diesel baseline condition, the optimised engine operating conditions of the present study with 54% first injection at 170°CA bTDC and 46% second injection at 3°CA bTDC achieves 32% higher indicated engine efficiency and 23% lower NOx emissions while smoke emissions are kept low at about 2% opacity and the combustion efficiency estimated using uHC/CO emissions stays high at 96%. The estimated noise was also low at 83.7 dB. The ISFC is reduced by 1% despite 33% lower calorific value of ethanol than a conventional diesel fuel.
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Citation
Woo, C., Goyal, H., Kook, S., Hawkes, E. et al., "Double Injection Strategies for Ethanol-Fuelled Gasoline Compression Ignition (GCI) Combustion in a Single-Cylinder Light-Duty Diesel Engine," SAE Technical Paper 2016-01-2303, 2016, https://doi.org/10.4271/2016-01-2303.Also In
References
- Kook , S. , Bae , C. , Miles , P.C. , Choi , D. et al. The Influence of Charge Dilution and Injection Timing on Low-Temperature Diesel Combustion and Emissions SAE Technical Paper 2005-01-3837 2005 10.4271/2005-01-3837
- Kimura , S. , Aoki , O. , Kitahara , Y. , and Aiyoshizawa , E. Ultra-Clean Combustion Technology Combining a Low-Temperature and Premixed Combustion Concept for Meeting Future Emission Standards SAE Technical Paper 2001-01-0200 2001 10.4271/2001-01-0200
- Wimmer , A. , Eichlseder , H. , Klell , M. , and Figer , G. Potential of HCCI Concepts for DI Diesel Engines International Journal of Vehicle Design 41 1-4 32 48 2006 10.1504/IJVD.2006.009660
- Christensen , M. , Johansson , B. , and Einewall , P. Homogeneous Charge Compression Ignition (HCCI) Using Isooctane, Ethanol and Natural Gas - A Comparison with Spark Ignition Operation SAE Technical Paper 972874 1997 10.4271/972874
- Dec , J.E. Advanced Compression-Ignition Engines-Understanding the in-Cylinder Processes Proceedings of the Combustion Institute 32 2 2727 2742 2009 10.1016/j.proci.2008.08.008
- Kalghatgi , G.T. , Risberg , P. , and Ångström , H.-E. Advantages of Fuels with High Resistance to Auto-Ignition in Late-Injection, Low-Temperature, Compression Ignition Combustion SAE Technical Paper 2006-01-3385 2006 10.4271/2006-01-3385
- Kalghatgi , G.T. , Risberg , P. , and Ångström , H.-E. Partially Pre-Mixed Auto-Ignition of Gasoline to Attain Low Smoke and Low NO x at High Load in a Compression Ignition Engine and Comparison with a Diesel Fuel SAE Technical Paper 2007-01-0006 2007 10.4271/2007-01-0006
- Maurya , R.K. , and Agarwal , A.K. Combustion and Emission Behavior of Ethanol Fuelled Homogeneous Charge Compression Ignition (HCCI) Engine SAE Technical Paper 2008-28-0064 2008 10.4271/2008-28-0064
- Zhang , Y. , He , B.-Q. , Xie , H. , and Zhao , H. The Combustion and Emission Characteristics of Ethanol on a Port Fuel Injection HCCI Engine SAE Technical Paper 2006-01-0631 2006 10.4271/2006-01-0631
- Liu , H. , Zhang , P. , Li , Z. , Zheng , Z. et al. An Investigation of Different Combustion Chamber Configuration, Intake Temperature, and Coolant Temperature in a HCCI Optical Engine SAE Technical Paper 2011-01-1765 2011 10.4271/2011-01-1765
- Dahl , D. , Andersson , M. , Berntsson , A. , Denbratt , I. et al. Reducing Pressure Fluctuations at High Loads by Means of Charge Stratification in HCCI Combustion with Negative Valve Overlap SAE Technical Paper 2009-01-1785 2009 10.4271/2009-01-1785
- Manente , V. , Johansson , B. , Tunestal , P. , and Cannella , W. Effects of Different Type of Gasoline Fuels on Heavy Duty Partially Premixed Combustion SAE Int. J. Engines 2 2 71 88 2009 10.4271/2009-01-2668
- Manente , V. , Johansson , B. , and Tunestal , P. Characterization of Partially Premixed Combustion with Ethanol: EGR Sweeps, Low and Maximum Loads Journal of Engineering for Gas Turbines and Power 132 8 082802 2010 10.1115/1.4000291
- Ra , Y. , Loeper , P. , Andrie , M. , Krieger , R. et al. Gasoline DICI Engine Operation in the LTC Regime Using Triple-Pulse Injection SAE Int. J. Engines 5 3 1109 1132 2012 10.4271/2012-01-1131
- Manente , V. , Zander , C.-G. , Johansson , B. , Tunestal , P. et al. An Advanced Internal Combustion Engine Concept for Low Emissions and High Efficiency from Idle to Max Load Using Gasoline Partially Premixed Combustion SAE Technical Paper 2010-01-2198 2010 10.4271/2010-01-2198
- Sellnau , M. , Foster , M. , Hoyer , K. , Moore , W. et al. Development of a Gasoline Direct Injection Compression Ignition (GDCI) Engine SAE Int. J. Engines 7 2 835 851 2014 10.4271/2014-01-1300
- Sellnau , M.C. , Sinnamon , J. , Hoyer , K. , Kim , J. et al. Part-Load Operation of Gasoline Direct-Injection Compression Ignition (GDCI) Engine SAE Technical Paper 2013-01-0272 2013 10.4271/2013-01-0272
- Kook , S. , and Bae , C. Combustion Control Using Two-Stage Diesel Fuel Injection in a Single-Cylinder PCCI Engine SAE Technical Paper 2004-01-0938 2004 10.4271/2004-01-0938
- Mohammadi , A. , Kee , S.-S. , Ishiyama , T. , Kakuta , T. et al. Implementation of Ethanol Diesel Blend Fuels in PCCI Combustion SAE Technical Paper 2005-01-3712 2005 10.4271/2005-01-3712
- Hildingsson , L. , Kalghatgi , G. , Tait , N. , Johansson , B. et al. Fuel Octane Effects in the Partially Premixed Combustion Regime in Compression Ignition Engines SAE Technical Paper 2009-01-2648 2009 10.4271/2009-01-2648
- Hildingsson , L. , Johansson , B. , Kalghatgi , G.T. , and Harrison , A.J. Some Effects of Fuel Autoignition Quality and Volatility in Premixed Compression Ignition Engines SAE Int. J. Engines 3 1 440 460 2010 10.4271/2010-01-0607
- Kaiadi , M. , Johansson , B. , Lundgren , M. , and Gaynor , J.A. Experimental Investigation on Different Injection Strategies for Ethanol Partially Premixed Combustion SAE Technical Paper 2013-01-0281 2013 10.4271/2013-01-0281
- Ra , Y. , Loeper , P. , Reitz , R.D. , Andrie , M. et al. Study of High Speed Gasoline Direct Injection Compression Ignition (GDICI) Engine Operation in the LTC Regime SAE Int. J. Engines 4 1 1412 1430 2011 10.4271/2011-01-1182
- Benajes , J. , Novella , R. , De Lima , D. , and Tribotte , P. Investigation on Multiple Injection Strategies for Gasoline PPC Operation in a Newly Designed 2-Stroke HSDI Compression Ignition Engine SAE Int. J. Engines 8 2 758 774 2015 10.4271/2015-01-0830
- Sellnau , M. , Sinnamon , J. , Hoyer , K. , and Husted , H. Gasoline Direct Injection Compression Ignition (GDCI) -Diesel-Like Efficiency with Low CO 2 Emissions SAE Int. J. Engines 4 1 2010 2022 2011 10.4271/2011-01-1386
- Kaiadi , M. , Johansson , B. , Lundgren , M. , and Gaynor , J.A. Sensitivity Analysis Study on Ethanol Partially Premixed Combustion SAE Int. J. Engines 6 1 120 131 2013 10.4271/2013-01-0269
- Manente , V. , Tunestal , P. , Johansson , B. , and Cannella , W.J. Effects of Ethanol and Different Type of Gasoline Fuels on Partially Premixed Combustion from Low to High Load SAE Technical Paper 2010-01-0871 2010 10.4271/2010-01-0871
- Solaka , H. , Aronsson , U. , Tuner , M. , and Johansson , B. Investigation of Partially Premixed Combustion Characteristics in Low Load Range with Regards to Fuel Octane Number in a Light-Duty Diesel Engine SAE Technical Paper 2012-01-0684 2012 10.4271/2012-01-0684
- Das Adhikary , B. , Reitz , R. , and Ciatti , S. Study of In-Cylinder Combustion and Multi-Cylinder Light Duty Compression Ignition Engine Performance Using Different RON Fuels at Light Load Conditions SAE Technical Paper 2013-01-0900 2013 10.4271/2013-01-0900
- Kolodziej , C. , Ciatti , S. , Vuilleumier , D. , Das Adhikary , B. et al. Extension of the Lower Load Limit of Gasoline Compression Ignition with 87 AKI Gasoline by Injection Timing and Pressure SAE Technical Paper 2014-01-1302 2014 10.4271/2014-01-1302
- Kolodziej , C. , Kodavasal , J. , Ciatti , S. , Som , S. et al. Achieving Stable Engine Operation of Gasoline Compression Ignition Using 87 AKI Gasoline Down to Idle SAE Technical Paper 2015-01-0832 2015 10.4271/2015-01-0832
- Woo , C. , Kook , S. , and Hawkes , E.R. Effect of Intake Air Temperature and Common-Rail Pressure on Ethanol Combustion in a Single-Cylinder Light-Duty Diesel Engine Fuel 180 9 19 2016 10.1016/j.fuel.2016.04.005
- Shen , M. , Tuner , M. , and Johansson , B. Close to Stoichiometric Partially Premixed Combustion -the Benefit of Ethanol in Comparison to Conventional Fuels SAE Technical Paper 2013-01-0277 2013 10.4271/2013-01-0277
- Padala , S. , Woo , C. , Kook , S. , and Hawkes , E.R. Ethanol Utilisation in a Diesel Engine Using Dual-Fuelling Technology Fuel 109 0 597 607 2013 10.1016/j.fuel.2013.03.049
- Mickevičius , T. , Slavinskas , S. , and Kreivaitis , R. Effect of Ethanol on Performance and Durability of a Diesel Common Rail High Pressure Fuel Pump Transport 30 3 1 7 2015 10.3846/16484142.2015.1058292
- Karavalakis , G. , Short , D. , Chen , V. , Espinoza , C. et al. Evaluating Particulate Emissions from a Flexible Fuel Vehicle with Direct Injection When Operated on Ethanol and Iso-Butanol Blends SAE Technical Paper 2014-01-2768 2014 10.4271/2014-01-2768
- Lemaire , R. , Therssen , E. , and Desgroux , P. Effect of Ethanol Addition in Gasoline and Gasoline-Surrogate on Soot Formation in Turbulent Spray Flames Fuel 89 12 3952 3959 2010 10.1016/j.fuel.2010.06.031
- Rakopoulos , C.D. , Antonopoulos , K.A. , Rakopoulos , D.C. , and Hountalas , D.T. Multi-Zone Modeling of Combustion and Emissions Formation in DI Diesel Engine Operating on Ethanol-Diesel Fuel Blends Energy Conversion and Management 49 4 625 643 2008 10.1016/j.enconman.2007.07.035
- Padala , S. , Kook , S. , and Hawkes , E.R. Effect of Ethanol Port-Fuel-Injector Position on Dual-Fuel Combustion in an Automotive-Size Diesel Engine Energy & Fuels 28 1 340 348 2014 10.1021/ef401479s
- Woo , C. , Kook , S. , Rogers , P.L. , Marquis , C. et al. A Comparative Analysis on Engine Performance of a Conventional Diesel Fuel and 10% Biodiesel Blends Produced from Coconut Oils SAE Technical Paper 2015-24-2489 2015 10.4271/2015-24-2489
- Mueller , C.J. The Quantification of Mixture Stoichiometry When Fuel Molecules Contain Oxidizer Elements or Oxidizer Molecules Contain Fuel Elements SAE Technical Paper 2005-01-3705 2005 10.4271/2005-01-3705
- Krisman , A. , Hawkes , E.R. , Kook , S. , Sjöberg , M. et al. On the Potential of Ethanol Fuel Stratification to Extend the High Load Limit in Stratified-Charge Compression-Ignition Engines Fuel 99 45 54 2012 10.1016/j.fuel.2012.04.001
- Rusly , A. , Kook , S. , Hawkes , E. , and Zhang , R. High-Speed Imaging of Soot Luminosity and Spectral Analysis of In-Cylinder Pressure Trace during Diesel Knock SAE Technical Paper 2014-01-1259 2014 10.4271/2014-01-1259
- Shahlari , A.J. , Hocking , C. , Kurtz , E. and Ghandhi , J. Comparison of Compression Ignition Engine Noise Metrics in Low-Temperature Combustion Regimes SAE Int J Engine 6 1 541 552 2013 10.4271/2013-01-1659
- Shahlari , A.J. , Kurtz , E. , Hocking , C. , and Antonov , S. Correlation of Cylinder Pressure-Based Engine Noise Metrics to Measured Microphone Data International Journal of Engine Research 16 7 829 850 2014 10.1177/1468087414552831