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Enabling High Efficiency Direct Injection Engine with Naphtha Fuel through Partially Premixed Charge Compression Ignition Combustion
Technical Paper
2012-01-0677
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
More stringent emissions standards along with higher fuel economy demands have obliged auto makers to develop technical solutions that exploit synergistic features from gasoline and diesel engines. To minimize NOx and soot trade-off, diesel powertrain has been developed to adopt increasingly complex and expensive technology such as extremely high pressure fuel injection systems, low pressure EGR, and variable valve timing. These attempts are associated with promoting Partially Premixed Charge Compression Ignition (PPC-CI) combustion via increasing mixing time and ignition delay. Alternatively, PPC-CI combustion can be achieved easier by using fuels with higher resistance to auto-ignition than conventional diesel fuel. Previous work has demonstrated the possibility of reducing the cost of future diesel after-treatment systems by using gasoline-like fuels. In this study, we start with a 0.5-liter single-cylinder direct injection spark ignition (DISI) engine and demonstrate that fuel economy can be improved significantly by running it in PPC-CI mode. Naphtha, less processed refinery stream in the gasoline boiling and carbon number range, but with lower Octane Number, has been run in a 12:1 compression ratio single-cylinder engine with DISI fuel system and shallow oval-type bowl piston. Both light and heavy Naphtha were successfully run in PPC-CI mode with regular valve events and intake charge boosting at six engine running conditions representative of a typical urban driving cycle including idle. Very low NOx level was achieved through high EGR and advanced injection timings to segregate the fuel injection from heat release. When compared to a Stoichiometric SI operation with optimal valve timings, 19% weighted cycle average fuel consumption reduction was achieved. This result demonstrates that an engine equipped with a low cost DI system could offer noticeably better efficiency through PPC-CI combustion, especially when run with Naphtha, which can provide lower CO₂ emission in a refinery process. Although further work is needed to develop a practical engine, high efficiency, reduced system cost and overall CO₂ footprint benefits can be achieved by matching the fuel and the combustion system.
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Chang, J., Kalghatgi, G., Amer, A., and Viollet, Y., "Enabling High Efficiency Direct Injection Engine with Naphtha Fuel through Partially Premixed Charge Compression Ignition Combustion," SAE Technical Paper 2012-01-0677, 2012, https://doi.org/10.4271/2012-01-0677.Also In
References
- Dec, J.E. “Advanced compression ignition engines - understanding the in-cylinder processes” Proceedings of the Combustion Institute 32 2009 2727 2742
- Kalghatgi, G. Risberg, P. Ångström, H. “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. Risberg, P. Ångström, H. “Partially Pre-Mixed Auto-Ignition of Gasoline to Attain Low Smoke and Low NOx 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
- Kalghatgi, G. Hildingsson, L. Johansson, B. “Low NOx and low smoke operation of a diesel engine using gasoline-like fuels” Journal of Engineering for Gas Turbines and Power 132 9 2010
- 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. Harrison, A. “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
- Kalghatgi, G.T. Hildingsson, L. Johansson, B. Harrison, A.J. “Auto-ignition quality of gasolines in partially premixed combustion in diesel engines” Proceedings of the Combustion Institute 33 2010
- Kalghatgi, G.T. Hildingsson, L. Johansson, B. Harrison, A.J. “Low- NOx, low-smoke operation of a diesel engine using “premixed enough” compression ignition - Effects of fuel auto-ignition quality, volatility and aromatic content” THIESEL 2010
- Manente, V. Johansson, B. Tunestal, P. “Partially Premixed Combustion at High Load using Gasoline and Ethanol, a Comparison with Diesel,” SAE Technical Paper 2009-01-0944 2009 10.4271/2009-01-0944
- Manente, V. Johansson, B. Tunestal, P. Cannella, W. “Effects of Different Type of Gasoline Fuels on Heavy Duty Partially Premixed Combustion,” SAE Int. J. Engines 2 2 71 88 2010 10.4271/2009-01-2668
- Manente, V. Johansson, B. Tunestål, P. “Half Load Partially Premixed Combustion, PPC, with High Octane Number Fuels. Gasoline and Ethanol Compared with Diesel” SIAT 2009 295 2009
- Hanson, R. Splitter, D. Reitz, R. “Operating a Heavy-Duty Direct-Injection Compression-Ignition Engine with Gasoline for Low Emissions,” SAE Technical Paper 2009-01-1442 2009 10.4271/2009-01-1442
- Reitz, R.D. “High-Efficiency, Ultra-Low Emission Combustion in a Heavy-Duty Engine via Fuel Reactivity Control” 15th Diesel Engine-Efficiency and Emissions Research (DEER) Conference Dearborn, MI Aug 03 2009
- Weall, A. Collings, N. “Investigation into Partially Premixed Combustion in a Light-Duty Multi-Cylinder Diesel Engine Fuelled Gasoline and Diesel with a Mixture of,” SAE Technical Paper 2007-01-4058 2007 10.4271/2007-01-4058
- Weall, A. Collings, N. “Gasoline Fuelled Partially Premixed Compression Ignition in a Light Duty Multi Cylinder Engine: A Study of Low Load and Low Speed Operation,” SAE Int. J. Engines 2 1 1574 1586 2009 10.4271/2009-01-1791
- Cracknell, R. Rickeard, D. Ariztegui, J. Rose, K. et al. “Advanced Combustion for Low Emissions and High Efficiency Part 2: Impact of Fuel Properties on HCCI Combustion,” SAE Technical Paper 2008-01-2404 2008 10.4271/2008-01-2404
- Sellnau, M. Sinnamon, J. Hoyer, K. Husted, H. “Gasoline Direct Injection Compression Ignition (GDCI) - Diesel-like Efficiency with Low CO2 Emissions,” SAE Int. J. Engines 4 1 2010 2022 2011 10.4271/2011-01-1386
- Akihama, K. Kosaka, H. Hotta, Y. Nishikawa, K. et al. “An Investigation of High Load (Compression Ignition) Operation of the “Naphtha Engine” - a Combustion Strategy for Low Well-to-Wheel CO2 Emissions,” SAE Int. J. Fuels Lubr. 1 1 920 932 2009 10.4271/2008-01-1599
- Rose, K. Cracknell, R. Rickeard, D. Ariztegui, J. et al. “Impact of Fuel Properties on Advanced Combustion Performance in a Diesel Bench Engine and Demonstrator Vehicle,” SAE Technical Paper 2010-01-0334 2010 10.4271/2010-01-0334
- Cho, K. Han, M. Sluder, C. Wagner, R. et al. “Experimental Investigation of the Effects of Fuel Characteristics on High Efficiency Clean Combustion in a Light-Duty Diesel Engine,” SAE Technical Paper 2009-01-2669 2009 10.4271/2009-01-2669
- Lacey, P. Naegeli, D. De La Cruz, J. Whalen, M. “Lubricity of Volatile Fuels for Compression Ignition Engines,” SAE Technical Paper 2000-01-1804 2000 10.4271/2000-01-1804
- Adomeit, P. Jakob, M. Kolbeck, A. Pischinger, S. “Glow-plug Ignition of Ethanol Fuels under Diesel Engine Relevant Thermodynamic Conditions,” SAE Technical Paper 2011-01-1391 2011 10.4271/2011-01-1391