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Parametric Investigations on Premixed Charged Compression Ignition in a Small-Bore Light Duty Diesel Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 30, 2020 by SAE International in United States
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Achieving stable combustion without misfire and knocking is challenging in premixed charge compression ignition (PCCI) especially in small bore, air cooled diesel engines owing to lower power output and inefficient cooling system. In the present study, a single cylinder, air cooled diesel engine used for agricultural water pumping applications is modified to run in PCCI mode by replacing an existing mechanical fuel injection system with a flexible common rail direct injection system. An advanced start of fuel injection (SOI) and exhaust gas recirculation (EGR) are required to achieve PCCI in the test engine. Parametric investigations on SOI, EGR and fuel injection pressure are carried out to identify optimum parameters for achieving maximum brake thermal efficiency. An SOI sweep of 12 to 50 deg. CA bTDC is done and for each SOI, EGR is varied from 0 to 50% to identify maximum efficiency points. It was found that EGR helps in extending the load range from 20 to 40% of rated load. However, it resulted in increase in unburned hydrocarbon (HC) emissions. To study the effect of injection pressure, SOI, speed and EGR rate were fixed as constant and injection pressure was varied from 300 to 900 bar. Unlike conventional combustion, increasing fuel injection pressure is not beneficial in PCCI in the present small-bore engine wherein significant increase in HC, carbon monoxide (CO) and smoke emissions is observed which could be due to spray wall impingement. It was observed that increasing fuel injection pressure increased the efficiency only slightly whereas the penalty in terms of HC and CO emissions were significant. Based on the results obtained, it is concluded that for achieving PCCI in the present small-bore engine, an early fuel injection with high EGR and lower injection pressures are required.
CitationPradeep, V. and Krishnasamy, A., "Parametric Investigations on Premixed Charged Compression Ignition in a Small-Bore Light Duty Diesel Engine," SAE Technical Paper 2020-32-2300, 2020.
Data Sets - Support Documents
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- Heywood, J.B. , Internal Combustion Engine Fundamentals (New York: McGraw-Hill, 2000).
- Ishikawa, N., Uekusa, T., Nakada, T., and Hariyoshi, R. , “DI Diesel Emission Control by Optimized Fuel Injection,” SAE Technical Paper 2004-01-0117, 2004, https://doi.org/10.4271/2004-01-0117.
- Akihama, K., Takatori, Y., Inagaki, K., Sasaki, S. et al. , “Mechanism of the Smokeless Rich Diesel Combustion by Reducing Temperature,” SAE Technical Paper 2001-01-0655, 2001, https://doi.org/10.4271/2001-01-0655.
- Hasegawa, R., and Yanagihara, H. , “HCCI Combustion in DI Diesel Engine,” SAE Technical Paper 2003-01-0745, 2003, https://doi.org/10.4271/2003-01-0745.
- Hardy, W.L., and Reitz, R.D. , “A Study of the Effects of High EGR, High Equivalence Ratio, and Mixing Time on Emissions Levels in a Heavy-Duty Diesel Engine for PCCI Combustion,” SAE Technical Paper 2006-01-0026, 2006, https://doi.org/10.4271/2006-01-0026.
- Kokjohn, S.L., and Reitz, R.D. , “Reactivity Controlled Compression Ignition and Conventional Diesel Combustion: A Comparison of Methods to Meet Light-Duty NOx and Fuel Economy Targets,” International Journal of Engine Research 14(5):452-468, 2013.
- Kimura, S., Aoki, O., Ogawa, H., Muranaka, S. et al. , “New Combustion Concept for Ultra-Clean and High-Efficiency Small DI Diesel Engines,” SAE Technical Paper 1999-01-3681, 1999, https://doi.org/10.4271/1999-01-3681.
- Murugesa Pandian, M., and Krishnasamy, A. , “Effects of Compression Ratio and Water Vapor Induction on the Achievable Load Limits of a Light Duty Diesel Engine Operated in HCCI Mode,” SAE Technical Paper 2019-01-0962, 2019, https://doi.org/10.4271/2019-01-0962.
- Molina Alcaide, S.A., García Martínez, A., Pastor Enguídanos, J.M., Belarte Manes, E. et al. , “Operating Range Extension of RCCI Combustion Concept from Low to Full Load in a Heavy-Duty Engine,” Applied Energy 143:211-227, 2015.
- Murugesa Pandian, M. and Krishnasamy, A. , “A Comparison of Different Low Temperature Combustion Strategies in a Small Single Cylinder Diesel Engine under Low Load Conditions,” SAE Technical Paper 2017-01-2363, 2017, https://doi.org/10.4271/2017-01-2363.
- Cheng, X.-B., Hu, Y.-Y., Yan, F.-Q., Chen, L. et al. , “Investigation of the Combustion and Emission Characteristics of Partially Premixed compression Ignition in a Heavy-Duty Diesel Engine,” Proc IMechE Part D: J Automobile Engineering 1-15, 2014, https://doi.org/10.1177/0954407013513012.
- Kiplimo, R., Tomita, E., Kawahara, N., and Yokobe, S. , “Effects of Spray Impingement, Injection Parameters, and EGR on the Combustion and Emission Characteristics of a PCCI Diesel Engine,” Appl Therm Eng 37:165-175, 2012.
- Simescu, S., Ryan, T., Neely, G., Matheaus, A. et al. , “Partial Pre-Mixed Combustion with Cooled and Uncooled EGR in a Heavy-Duty Diesel Engine,” SAE Technical Paper 2002-01-0963, 2002, https://doi.org/10.4271/2002-01-0963.
- Kanda, T., Hakozaki, T., Uchimoto, T., Hatano, J. et al. , “PCCI Operation with Early Injection of Conventional Diesel Fuel,” SAE Technical Paper 2005-01-0378, 2005, https://doi.org/10.4271/2005-01-0378.
- Boot, M.D., Luijten, C.C.M., Rijk, E.P., Albrecht, B.A. et al. , “Optimization of Operating Conditions in the Early Direct Injection Premixed Charge Compression Ignition Regime,” SAE Technical Paper 2009-24-0048, 2009, https://doi.org/10.4271/2009-24-0048.
- Choi, S., and Min, K. , “Analysis of the Combustion and Emissions of a Diesel Engine in Early-Injection, Partially-Premixed Charge Compression Ignition Regimes,” Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 227(7):939-950, 2013.
- Boot, M.D., Luijten, C.C.M., Somers, L.M.T., Eguz, U. et al. , “Uncooled EGR as a Means of Limiting Wall-Wetting under Early Direct Injection Conditions,” SAE Technical Paper 2009-01-0665, 2009, https://doi.org/10.4271/2009-01-0665.
- Walter, B., and Gatellier, B. , “Development of the High Power NADI Concept Using Dual Mode Diesel Combustion to Achieve Zero NOx and Particulate Emissions,” SAE Technical Paper 2002-01-1744, 2002, https://doi.org/10.4271/2002-01-1744.
- Lee, S., and Reitz, R.D. , “Spray Targeting to Minimize Soot and CO Formation in Premixed Charge Compression Ignition (PCCI) Combustion with a HSDI Diesel Engine,” SAE Technical Paper 2006-01-0918, 2006, https://doi.org/10.4271/2006-01-0918.
- Catania, A., d’Ambrosio, S., Finesso, R., and Spessa, E. , “Effects of Rail Pressure, Pilot Scheduling and EGR Rate on Combustion and Emissions in Conventional and PCCI Diesel Engines,” SAE Int. J. Engines 3(1):773-787, 2010, https://doi.org/10.4271/2010-01-1109.
- Yin, L., Lundgren, M., Wang, Z., Stamatoglou, P. et al. , “High Efficient Internal Combustion Engine Using Partially Premixed Combustion with Multiple Injections,” Applied Energy 233-234(2019):516-523.
- Park, Y., and Bae, C. , “Effects of Single and Double Post Injections on Diesel PCCI Combustion,” SAE Technical Paper 2013-01-0010, 2013, https://doi.org/10.4271/2013-01-0010.
- Hountalas, D.T. et al. , “Effect of Injection Pressure on the Performance and Exhaust Emissions of a Heavy Duty DI Diesel Engine,” SAE Technical Paper 2003-01-0340, 2003, https://doi.org/10.4271/2003-01-0340.
- Abdullah, N.R., Mamat, R., Rounce, P., Tsolakis, A. et al. , “Effect of Injection Pressure with Split Injection in a V6 Diesel Engine,” SAE Technical Paper 2009-24-0049, 2009, https://doi.org/10.4271/2009-24-0049.
- Han, S., and Bae, C. , “The Influence of Fuel Injection Pressure and Intake Pressure on Conventional and Low Temperature Diesel Combustion,” SAE Technical Paper 2012-01-1721, 2012, https://doi.org/10.4271/2012-01-1721.