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Improvement of Premixed Compression Ignition Combustion using Various Injector Configurations
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 12, 2011 by SAE International in United States
Annotation ability available
Premixed compression ignition (PCI) combustion was implemented using advanced injection strategy and exhaust gas recirculation in a direct-injection single-cylinder diesel engine. The injection timing swept experiment using a baseline injector, which had an injection angle of 146° and 8 nozzle holes, obtained three types of combustion regime: conventional diesel combustion for an injection timing of 10° CA (crank angle) BTDC (before top dead center), PCI combustion for an injection timing of 40° CA BTDC and homogeneous charge compression ignition (HCCI) combustion for an injection timing of 80° CA BTDC. PCI combustion can be verified by burn duration analysis. The burn duration, which was defined as the period from 10% to 90% of the accumulated heat release, was very short in PCI combustion but not in the others. PCI combustion with an injection timing of 40° CA BTDC was achieved in a range of an exhaust gas recirculation (EGR) rate from 0% to around 40%.
Two types of different injectors were applied to investigate the effect of injection angle and the number of nozzle holes on PCI combustion: one had an injection angle of 70° and 8 nozzle holes, the other had an injection angle of 70mD and 14 nozzle holes. These two injectors could implement PCI combustion as well. The indicated mean effective pressure (IMEP) for both injectors with a narrow injection angle (70°) was higher than that for the baseline injector because the injected fuel could be directed toward the piston bowl so that most of the fuel could participate in the combustion. The IMEP for the injector with 8 nozzle holes was higher than that for the injector with 14 nozzle holes. On the other hand, when the injection angle was 70°, the injector with 14 nozzle holes had low levels of HC and CO emissions because of better air utilization compared with the injector with 8 nozzle holes, which was supported by a spray cone angle analysis. A maximum pressure rise rate (MPRR) analysis showed that the MPRR for PCI combustion was higher than that for conventional diesel combustion and HCCI combustion. The MPRR for the injectors of a narrow injection angle in PCI combustion was higher than that for a baseline injector. However, for the injectors of a narrow injection angle, there was no difference in the MPRR of PCI combustion with respect to the number of nozzle holes.
CitationJung, Y., Bae, C., Jang, J., and Kim, D., "Improvement of Premixed Compression Ignition Combustion using Various Injector Configurations," SAE Technical Paper 2011-01-1357, 2011, https://doi.org/10.4271/2011-01-1357.
Kinetically Controlled CI Combustion (including HCCI), 2011
Number: SP-2313; Published: 2011-04-12
Number: SP-2313; Published: 2011-04-12
- Johnson, T. V. “Diesel Emission Control in Review,” SAE Int. J. Fuels Lubr. 2 1 1 12 2009 10.4271/2009-01-0121
- Zhao, F. Asmus, T. N. Assanis, D. N. Dec, J. E. Eng, J. A. Najt, P. M. “Homogeneous Charge Compression Ignition (HCCI) Engines: Key Reasearch and Development Issues,” SAE International Warrendale, PA 2003 978-0-7680-1123-4
- Ryan, T. W. Callahan, T. J. “Homogeneous Charge Compression Ignition of Diesel Fuel,” SAE Technical Paper 961160 1996 10.4271/961160
- Gray, A. W. Ryan, T. W. “Homogeneous Charge Compression Ignition (HCCI) of Diesel Fuel,” SAE Technical Paper 971676 1997 10.4271/971676
- Takeda, Y. Keiichi, N. Keiichi, N. “Emission Characteristics of Premixed Lean Diesel Combustion with Extremely Early Staged Fuel Injection,” SAE Technical Paper 961163 1996 10.4271/961163
- Yokota, H. Kudo, Y. Nakajima, H. Kakegawa, T. Suzuki, T. “A New Concept for Low Emission Diesel Combustion,” SAE Technical Paper 970891 1997 10.4271/970891
- Iwabuchi, Y. Kawai, K. Shoji, T. Takeda, Y. “Trial of New Concept Diesel Combustion System - Premixed Compression-Ignition Combustion -,” SAE Technical Paper 1999-01-0185 1999 10.4271/1999-01-0185
- Walter, B. 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 10.4271/2002-01-1744
- Kimura, S. Aoki, O. Kitahara, Y. 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
- Lee, S. 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 10.4271/2006-01-0918
- Okude, K. Mori, K. Shiino, S. Moriya, T. “Premixed Compression Ignition (PCI) Combustion for Simultanious Reduction of NOx and Soot in Diesel Engine,” SAE Technical Paper 2004-01-1907 2004 10.4271/2004-01-1907
- Lechner, G. A. Jacobs, T. J. Chryssakis, C. A. Assanis, D. N. Siewert, R. N. “Evaluation of a Narrow Spray Cone Angle, Advanced Injection Timing Strategy to Achieve Partially Premixed Compression Ignition Combustion in a Diesel Engine,” SAE Technical Paper 2005-01-0167 2005 10.4271/2005-01-0167
- Reveille, B. Kleemann, A. Knop, V. Habchi, C. “Potential of Narrow Angle Direct Injection Diesel Engines for Clean Combustion: 3D CFD Analysis,” SAE Technical Paper 2006-01-1365 2006 10.4271/2006-01-1365
- Kashdan, J. T. Mendez, S. Bruneaux, G. “On the origin of Unburned Hydrocarbon Emissions in a Wall Guided, Low NOx Diesel Combustion System,” SAE Technical Paper 2007-01-1836 2007 10.4271/2007-01-1836
- Fang, T. Coverdill, R. E. Lee, C. F. White, R. A. “Smokeless Combustion Within a Small-Bore HSDI Diesel Engine Using a Narrow Angle Injector,” SAE Technical Paper 2007-01-0203 2007 10.4271/2007-01-0203
- Martin, G. C. Mueller, C. J. Milam, D. M. Radovanovic, M. S. Gehrke, C. R. “Early Direct-Injection, Low-Temperature Combustion of Diesel Fuel in an Optical Engine Utilizing a 15-Hole, Dual-Row, Narrow-Included-Angle Nozzle,” SAE Int. J. of Engines 1 1 1057 1082 2008 10.4271/2008-01-2400
- Kang, J. Bae, C. Lee, K. O. “Initial development of non-evaporating diesel sprays in common-rail injection systems,” Int. J. Engine Res. 4 4 283 298 2003
- Lee, Jinwoo Park, Jungseo Jeon, Jinwoog Bae, Choongsik Kim, Baekkyu Hwang, Inpyoung “Assessment of JP-8 and Diesel in Direct Injection Diesel Engine,” THIESEL 2008 Conference on Thermo- and Fluid Dynamic Processes in Diesel Engines 2008
- Ladommatos, N. Abdelhalim, S. Zhao, H. Hu, Z. “The Dilution, Chemical, and Thermal Effects of Exhaust Gas Recirculation on Diesel Engine Emissions - Part 1: Effect of Reducing Inlet Charge Oxygen,” SAE Technical Paper 961165 1996 10.4271/961165
- Ladommatos, N. Xiao, Z. Zhao, H. “The effect of piston bowl temperature on diesel exhaust emissions,” Proc. IMechE. 219 371 388 2005
- Arcoumanis, C. Gavaises, M. Nouri, J. M. Abdul-Wahab, E. Horrocks, R. W. “Analysis of the Flow in the Nozzle of a Vertical Multi-Hole Diesel Engine Injector,” SAE Technical Paper 980811 1998 10.4271/980811
- Heywood, John B. “Internal Combustion Engine Fundamentals,” McGraw-Hill 1988 0-07-100499-8