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Comparison of RCCI Operation with and without EGR over the Full Operating Map of a Heavy-Duty Diesel Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 05, 2016 by SAE International in United States
Annotation ability available
Dual-fuel combustion using port-injection of low reactivity fuel combined with direct injection of a higher reactivity fuel, otherwise known as Reactivity Controlled Compression Ignition (RCCI), has been shown as a method to achieve high efficiency combustion with moderate peak pressure rise rates, low engine-out soot and NOx emissions. A key requirement for extending to high-load operation is reduce the reactivity of the premixed charge prior to the diesel injection. One way to accomplish this is to use a very low reactivity fuel such as natural gas. In this work, experimental testing was conducted on a 13L multi-cylinder heavy-duty diesel engine modified to operate using RCCI combustion with port injection of natural gas and direct injection of diesel fuel. Natural gas/diesel RCCI engine operation is compared over the EPA Heavy-Duty 13 mode supplemental emissions test with and without EGR. Emissions and efficiency metrics were examined over the entire engine map for both operating modes. It was found that the use of EGR lowered combustion noise to less than 97 dBa and lowered the cycle averaged NOx emissions by 48%, with only a slight increase in soot and 0.5 point decrease in brake thermal efficiency. Thus, operation with EGR offered the lowest total fluid consumption when considering the use of a selective catalytic reduction system for NOx aftertreatment.
CitationHanson, R., Ickes, A., and Wallner, T., "Comparison of RCCI Operation with and without EGR over the Full Operating Map of a Heavy-Duty Diesel Engine," SAE Technical Paper 2016-01-0794, 2016, https://doi.org/10.4271/2016-01-0794.
- “Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles,” Federal Register 76(179): 57106-57513, 2011.
- “Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards and Highway Diesel Fuel Sulfur Control Requirements,” Federal Register 66(12): 5002-5193, 2001.
- "Recovery Act-Systems Level Technology Development, Integration, and Demonstration for Efficient Class 8 Trucks (SuperTruck) and Advanced Technology Powertrains for Light Duty Vehicles (ATPLD)," DE-FOA-0000079, Department of Energy: Washington, D.C., 2009.
- De Ojeda, W. and Rajkumar, M., "Engine Technologies for Clean and High Efficiency Heavy Duty Engines," SAE Int. J. Engines 5(4):1759-1767, 2012, doi:10.4271/2012-01-1976.
- Kokjohn, S., Hanson, R., Splitter, D., and Reitz, R., "Experiments and Modeling of Dual-Fuel HCCI and PCCI Combustion Using In-Cylinder Fuel Blending," SAE Int. J. Engines 2(2):24-39, 2010, doi:10.4271/2009-01-2647.
- Hanson, R., Kokjohn, S., Splitter, D., and Reitz, R., "An Experimental Investigation of Fuel Reactivity Controlled PCCI Combustion in a Heavy-Duty Engine," SAE Int. J. Engines 3(1):700-716, 2010, doi:10.4271/2010-01-0864.
- Joo, S., Alger, T., Chadwell, C., De Ojeda, W. et al., "A High Efficiency, Dilute Gasoline Engine for the Heavy-Duty Market," SAE Int. J. Engines 5(4):1768-1789, 2012, doi:10.4271/2012-01-1979.
- Zhang, Y., Sagalovich, I., De Ojeda, W., Ickes, A. et al., "Development of Dual-Fuel Low Temperature Combustion Strategy in a Multi-Cylinder Heavy-Duty Compression Ignition Engine Using Conventional and Alternative Fuels," SAE Int. J. Engines 6(3):1481-1489, 2013, doi:10.4271/2013-01-2422.
- Ickes, A., Wallner, T., Zhang, Y., and De Ojeda, W., "Impact of Cetane Number on Combustion of a Gasoline-Diesel Dual-Fuel Heavy-Duty Multi-Cylinder Engine," SAE Int. J. Engines 7(2):860-872, 2014, doi:10.4271/2014-01-1309.
- Teetz, C., Bergmann, D., Schneemann, A., et al., "MTU HCCI Engine with Low Raw Emissions," MTZ 73(9):4-9, 2012.
- De Ojeda, W., Zhang, Y., Xie, K., Han, X. et al., "Exhaust Hydrocarbon Speciation from a Single-Cylinder Compression Ignition Engine Operating with In-Cylinder Blending of Gasoline and Diesel Fuels," SAE Technical Paper 2012-01-0683, 2012, doi:10.4271/2012-01-0683.
- Zhang, Y., De Ojeda, W., and Wickman, D., "Computational Study of Combustion Optimization in a Heavy-Duty Diesel Engine Using In-Cylinder Blending of Gasoline and Diesel Fuels," SAE Technical Paper 2012-01-1977, 2012, doi:10.4271/2012-01-1977.
- Sun, Y. and Reitz, R., "Adaptive Injection Strategies (AIS) for Ultra-Low Emissions Diesel Engines," SAE Technical Paper 2008-01-0058, 2008, doi:10.4271/2008-01-0058.
- Sun, Y. and Reitz, R., "Modeling Diesel Engine NOx and Soot Reduction with Optimized Two-Stage Combustion," SAE Technical Paper 2006-01-0027, 2006, doi:10.4271/2006-01-0027.
- Kokjohn, S. and Reitz, R., "A Computational Investigation of Two-Stage Combustion in a Light-Duty Engine," SAE Int. J. Engines 1(1):1083-1104, 2009, doi:10.4271/2008-01-2412.
- Weninger, E., “Experimental Investigation of Two Stage Combustion in a Heavy-Duty Compression-Ignition Engine”, MS Thesis, Mechanical Engineering, University of Wisconsin-Madison, 2015.
- Wissink, M. and Reitz, R., "Direct Dual Fuel Stratification, a Path to Combine the Benefits of RCCI and PPC," SAE Int. J. Engines 8(2):878-889, 2015, doi:10.4271/2015-01-0856.
- Walker, N. R., Wissink, M. L., DelVescovo, D. A., and Reitz, R. D., "Use of Natural Gas for Load Extension of Dual-Fuel Reactivity Controlled Compression Ignition Heavy-Duty Engine Operation", Journal of Energy Resources Technology, 2015, JERT-15-1031, doi:10.1115/1.4030110
- Nieman, D., Dempsey, A., and Reitz, R., "Heavy-Duty RCCI Operation Using Natural Gas and Diesel," SAE Int. J. Engines 5(2):270-285, 2012, doi:10.4271/2012-01-0379.
- “Methane Number and Fuel Composition.” California Air Resources Board, 21 Feb. 2002. Web. 03 Apr. 2014.
- USCAR Advanced Combustion & Emissions Control working group combustion noise standards for light-duty engines. 2015.
- 40 CFR Ch.1, 86.1360-2007, Supplemental emission test; test cycle and procedures.
- Kokjohn, S., “Reactivity Controlled Compression Ignition Combustion”, PhD dissertation, Department of Mechanical Engineering, University of Wisconsin-Madison, 2012.
- Johnson, T., "Diesel Emissions in Review," SAE Int. J. Engines 4(1):143-157, 2011, doi:10.4271/2011-01-0304.
- Hanson, R., Ickes, A., and Wallner, T., “Use of Adaptive Injection Strategies to Increase the Full Load Limit of RCCI Operation”, Proceedings of the ASME ICEF conference, ICEF2015-1115. 2015.
- Khalek, T., et al., “Phase 1 of the Advanced Collaborative Emissions study (ACES): Highlights of Project Finding” US DOE DEER Conference, Dearborn MI, 2009
- Prikhodko, V., Curran, S., Barone, T., Lewis, S. et al., "Emission Characteristics of a Diesel Engine Operating with In-Cylinder Gasoline and Diesel Fuel Blending," SAE Int. J. Fuels Lubr. 3(2):946-955, 2010, doi:10.4271/2010-01-2266.
- Eng, J., "Characterization of Pressure Waves in HCCI Combustion," SAE Technical Paper 2002-01-2859, 2002, doi:10.4271/2002-01-2859.
- Winsor, R., et al., “Efficiency and Emission Improvements for Future Off-road Engines”, ERC Symposium, Madison, Wisconsin, 2015.