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Investigation of Partially Premixed Combustion Characteristics in Low Load Range with Regards to Fuel Octane Number in a Light-Duty Diesel Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 16, 2012 by SAE International in United States
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The impact of ignition quality and chemical properties on engine performance and emissions during low load partially premixed combustion (PPC) in a light-duty diesel engine were investigated. Four fuels in the gasoline boiling range, together with Swedish diesel (MK1), were operated at loads between 2 and 8 bar IMEPg at 1500 rpm, with 50% heat released located at 6 crank angle degrees (CAD) after top dead center (TDC). A single injection strategy was used, wherein the start of injection (SOI) and the injection duration were adjusted to achieve desired loads with maintained CA50, as the injection pressure was kept constant at 1000 bar. The objective of this work was to examine the low-load limit for PPC at approximately 50% EGR and λ=1.5, since these levels had been suggested as optimal in earlier studies. The low-load limits with stable combustion were between 5 and 7 bar gross IMEP for the gasoline fuels, higher limit for higher RON values. MK1 had the lowest low-load limit, 3 bar gross IMEP. By increasing λ with the kept EGR ratio, with extended boosting, all the fuels could be operated down to 2 bar IMEPg. The main difference in engine-out emissions between the fuels was the filtered smoke number (FSN), as the gasoline fuels produced much lower smoke than MK1. Higher RON value gave higher levels of carbon monoxide (CO) and unburned hydrocarbon (HC) for the gasoline fuels, while MK1 had the lowest levels of these emissions.
CitationSolaka, 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, https://doi.org/10.4271/2012-01-0684.
- Heywood, J.B., 1988, “Internal Combustion Engine Fundamentals”, McGraw Hill Book Co.
- Warnatz, J., Maas, U., DiBble, R.W., 2006, “Combustion Physical and Chemical Fundamentals, Modeling and Simulation, Experiments, Pollutant Formation” 4th edition, Springer Berlin Heidelberg New York.
- Aronsson, U., Chartier, C., Andersson, Ö., Johansson, B. et al., “Analysis of EGR Effects on the Soot Distribution in a Heavy Duty Diesel Engine using Time-Resolved Laser Induced Incandescence,” SAE Int. J. Engines 3(2):137-155, 2010, doi:10.4271/2010-01-2104.
- Onishi, S., Jo, S., Shoda, K., Jo, P. et al., “Active Thermo-Atmosphere Combustion (ATAC) - A New Combustion Process for Internal Combustion Engines,” SAE Technical Paper 790501, 1979, doi: 10.4271/790501.
- Christensen, M., Hultqvist, A., and Johansson, B., “Demonstrating the Multi Fuel Capability of a Homogeneous Charge Compression Ignition Engine with Variable Compression Ratio,” SAE Technical Paper 1999-01-3679, 1999, doi:10.4271/1999-01-3679.
- Lu, X.C., Chen, W., Huang, Z., 2005, “A Fundamental Study on the Control of the HCCI Combustion and Emissions by Fuel Design Concept Combined with Controllable EGR. Part 1. The Basic Characteristics of HCCI Combustion”, Fuel 84 (2005) 1074-1083
- Takahashi, Y., Suyama, K., Iijima, A., Yoshida, K. et al., “A Study of HCCI Combustion Using Spectroscopic Measurements and Chemical Kinetic Simulations: Effects of Fuel Composition, Engine Speed and Cylinder Pressure on Low-temperature Oxidation Reactions and Autoignition,” SAE Technical Paper 2011-32-0524, 2011, doi:10.4271/2011-32-0524.
- Sjöberg, M. and Dec, J., “Influence of Fuel Autoignition Reactivity on the High-Load Limits of HCCI Engines,” SAE Int. J. Engines 1(1):39-58, 2009, doi:10.4271/2008-01-0054.
- Johansson, T., Johansson, B., Tunestål, P., and Aulin, H., “The Effect of Intake Temperature in a Turbocharged Multi Cylinder Engine operating in HCCI mode,” SAE Int. J. Engines 2(2):452-466, 2010, doi:10.4271/2009-24-0060.
- Kitano, K., Nishiumi, R., Tsukasaki, Y., Tanaka, T. et al., “Effects of Fuel Properties on Premixed Charge Compression Ignition Combustion in a Direct Injection Diesel Engine,” SAE Technical Paper 2003-01-1815, 2003, doi:10.4271/2003-01-1815.
- 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, doi:10.4271/1999-01-3681.
- 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, doi:10.4271/2001-01-0200.
- Noehre, C., Andersson, M., Johansson, B., and Hultqvist, A., “Characterization of Partially Premixed Combustion,” SAE Technical Paper 2006-01-3412, 2006, doi:10.4271/2006-01-3412.
- Suzuki, H., Koike, N., and Odaka, M., “Combustion Control Method of Homogeneous Charge Diesel Engines,” SAE Technical Paper 980509, 1998, doi: 10.4271/980509.
- Okude, K., Mori, K., Shiino, S., and Moriya, T., “Premixed Compression Ignition (PCI) Combustion for Simultaneous Reduction of NOx and Soot in Diesel Engine,” SAE Technical Paper 2004-01-1907, 2004, doi:10.4271/2004-01-1907.
- Musculus, M., “Multiple Simultaneous Optical Diagnostic Imaging of Early-Injection Low-Temperature Combustion in a Heavy-Duty Diesel Engine,” SAE Technical Paper 2006-01-0079, 2006, doi:10.4271/2006-01-0079.
- Manente, V., Zander, C., 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, doi:10.4271/2010-01-2198.
- Kalghatgi, G., Risberg, P., and 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, doi:10.4271/2006-01-3385.
- Kalghatgi, G., Risberg, P., and 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, doi:10.4271/2007-01-0006.
- Egnell, R., “Combustion Diagnostics by Means of Multizone Heat Release Analysis and NO Calculation,” SAE Technical Paper 981424, 1998, doi: 10.4271/981424.
- Shibata, G., Oyama, K., Urushihara, T., and Nakano, T., “Correlation of Low Temperature Heat Release With Fuel Composition and HCCI Engine Combustion,” SAE Technical Paper 2005-01-0138, 2005, doi:10.4271/2005-01-0138.
- Truedsson, I., Tuner, M., Johansson, B., and Cannella, W., “Pressure Sensitivity of HCCI Auto-Ignition Temperature for Primary Reference Fuels,” SAE Technical Paper 2012-01-1128, 2012.
- Tanaka, S., Ayala, F., Keck, J.C., Heywood, J.B., 2002 “Two-Stage Ignition in HCCI Combustion and HCCI Control by Fuels and Additives”, Combustion and Flame 132 (2003) 219-239
- Dec, J., “A Conceptual Model of DI Diesel Combustion Based on Laser-Sheet Imaging*,” SAE Technical Paper 970873, 1997, doi: 10.4271/970873.
- Andersson, Ö., “Diesel Combustion, in Handbook on Combustion”, vol. 3, Ed. Winter, F., Wiley-VHC books, Weinheim, 2010
- Aronsson, U., Chartier, C., Andersson, Ö., Egnell, R. et al., “Analysis of the Correlation Between Engine-Out Particulates and Local Φ in the Lift-Off Region of a Heavy Duty Diesel Engine Using Raman Spectroscopy,” SAE Int. J. Fuels Lubr. 2(1):645-660, 2009, doi:10.4271/2009-01-1357.
- Kim, D., Ekoto, I., Colban, W., and Miles, P., “In-cylinder CO and UHC Imaging in a Light-Duty Diesel Engine during PPCI Low-Temperature Combustion,” SAE Int. J. Fuels Lubr. 1(1):933-956, 2009, doi:10.4271/2008-01-1602.