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Transition from HCCI to PPC: Investigation of the Effect of Different Injection Timing on Ignition and Combustion Characteristics in an Optical PPC Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
The partially premixed combustion (PPC) concept is regarded as an intermediate process between the thoroughly mixed Homogeneous charge compression ignition (HCCI) combustion and compression ignition (CI) combustion. It’s a combination of auto-ignition mode, a fuel-rich premixed combustion mode, and a diffusion combustion mode. The concept has both high efficiency and low soot emission due to low heat losses and less stratified fuel and air mixtures compared to conventional diesel CI. The mechanisms behind the combustion process are not yet very well known. This work focuses on the efficiency and the in-cylinder process in terms of fuel distribution and the initial phase of the combustion. More specifically, double injection strategies are compared with single injection strategies to achieve different levels of stratification, ranging from HCCI to PPC like combustion as well as poor (43%) to good (49%) of gross indicated efficiency. The experiments were performed in an optical heavy-duty CI engine.
To analyze how the efficiency was affected in a transition from HCCI to PPC, the natural luminosity (N.L.) was captured with high-speed video (HSV). To complement the HSV data, fuel, temperature, and oxygen distribution were explored by Computational fluid dynamics (CFD) simulation. The results show that the jet-jet and jet-piston interactions can be modified and can reshape the transition trends of gross indicated efficiency and ignition location compared to a single injection. In the transition region, these interactions can improve the efficiency by shaping the fuel-rich region away from cold areas, like the vertical wall of the piston and the squish region, to avoid fuel wetting and incomplete combustion. However, with double injections in the piston bowl (PPC region), jet-jet interaction can unfortunately inhibit the mixing process of the second fuel jet and oxygen due to interaction with the fuel rich region from the first injection, ending up with a lower combustion efficiency.
CitationZhang, M., Derafshzan, S., Xu, L., Bai, X. et al., "Transition from HCCI to PPC: Investigation of the Effect of Different Injection Timing on Ignition and Combustion Characteristics in an Optical PPC Engine," SAE Technical Paper 2020-01-0559, 2020, https://doi.org/10.4271/2020-01-0559.
Data Sets - Support Documents
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- Kalghatgi, G.T., Gurubaran, R.K., Davenport, A., Harrison, A.J. et al. , “Some Advantages and Challenges of Running a Euro IV, V6 Diesel Engine on a Gasoline Fuel,” Fuel. 108:197-207, 2013.
- Lu, X., Han, D., and Huang, Z. , “Fuel Design and Management for the Control of Advanced Compression-Ignition Combustion Modes,” Progress in Energy and Combustion Science. 37(6):741-783, 2011.
- Xu, L., Bai, X.S., Li, C., Tunestål, P. et al. , “Emission Characteristics and Engine Performance of Gasoline DICI Engine in the Transition from HCCI to PPC,” Fuel 254:115619, 2019.
- Xu, L., Bai, X.S., Li, C., Tunestål, P. et al. , “Combustion Characteristics of Gasoline DICI Engine in the Transition from HCCI to PPC: Experiment and Numerical Analysis,” Energy 185:922-937.
- Shen, M., Lonn, S., and Johansson, B. , “Transition from HCCI to PPC Combustion by Means of Start of Injection,” SAE Technical Paper 2015-01-1790, 2015, https://doi.org/10.4271/2015-01-1790.
- Noguchi, M., Tanaka, Y., Tanaka, T., and Takeuchi, Y. , “A Study on Gasoline Engine Combustion by Observation of Intermediate Reactive Products during Combustion,” SAE Technical Paper 790840, 1979, https://doi.org/10.4271/790840.
- Stanglmaier, R. and Roberts, C. , “Homogeneous Charge Compression Ignition (HCCI): Benefits, Compromises, and Future Engine Applications,” SAE Technical Paper 1999-01-3682, 1999, https://doi.org/10.4271/1999-01-3682.
- Li, C., Yin, L., Shamun, S., Tuner, M. et al. , “Transition from HCCI to PPC: The Sensitivity of Combustion Phasing to the Intake Temperature and the Injection Timing with and without EGR,” SAE Technical Paper 2016-01-0767, 2016, https://doi.org/10.4271/2016-01-0767.
- Dec, J. , “A Computational Study of the Effects of Low Fuel Loading and EGR on Heat Release Rates and Combustion Limits in HCCI Engines,” SAE Technical Paper 2002-01-1309, 2002, https://doi.org/10.4271/2002-01-1309.
- Eng, J. , “Characterization of Pressure Waves in HCCI Combustion,” SAE Technical Paper 2002-01-2859, 2002, https://doi.org/10.4271/2002-01-2859.
- An, Y., Vedharaj, S., Vallinayagam, R., Dawood, A. et al. , “Effect of Aromatics on Combustion Stratification and Particulate Emissions from Low Octane Gasoline Fuels in PPC and HCCI Mode,” SAE Technical Paper 2017-24-0086, 2017, https://doi.org/10.4271/2017-24-0086.
- Li, C., Xu, L., Bai, X., Tunestal, P. et al. , “Effect of Piston Geometry on Stratification Formation in the Transition from HCCI to PPC,” SAE Technical Paper 2018-01-1800, 2018, https://doi.org/10.4271/2018-01-1800.
- Wang, Z., Lonn, S., Matamis, A., Andersson, O. et al. , “Transition from HCCI to PPC: Investigation of Fuel Distribution by Planar Laser Induced Fluorescence (PLIF),” SAE Int. J. Engines 10(4):1465-1481, 2017, https://doi.org/10.4271/2017-01-0748.
- Tang, Q., Liu, H., Li, M., and Yao, M. , “Optical Study of Spray-Wall Impingement Impact on Early-Injection Gasoline Partially Premixed Combustion at Low Engine Load,” Applied Energy 185:708-719, 2017.
- Zhang, F., Liu, H.F., Yu, J., and Yao, M. , “Direct Numerical Simulation of N-Heptane/Air Auto-Ignition with Thermal and Charge Stratifications under Partially Premixed Charge Compression Ignition (PCCI) Engine Related Conditions,” Applied Thermal Engineering 104:516-526, 2016.
- Zhang, F., Yu, R., and Bai, X.S. , “Effect of Split Fuel Injection on Heat Release and Pollutant Emissions in Partially Premixed Combustion of PRF70/Air/EGR Mixtures,” Applied Energy 149:283-296, 2015.
- Zhang, F., Yu, R., and Bai, X.S. , “Direct Numerical Simulation of PRF70/Air Partially Premixed Combustion under IC Engine Conditions,” Proceedings of the Combustion Institute 35(3):2975-2982, 2015.
- An, Y., Jaasim, M., Raman, V., Im, H.G., and Johansson, B. , “In-Cylinder Combustion and Soot Evolution in the Transition from Conventional Compression Ignition (CI) Mode to Partially Premixed Combustion (PPC) Mode,” Energy & Fuels 32(2):2306-2320, 2018.
- An, Y., Mubarak Ali, M., Vallinayagam, R., AlRamadan, A. et al. , “Compression Ignition of Low Octane Gasoline under Partially Premixed Combustion Mode,” SAE Technical Paper 2018-01-1797, 2018, https://doi.org/10.4271/2018-01-1797.
- Manente, V., Johansson, B., and Cannella, W. , “Gasoline Partially Premixed Combustion, the Future of Internal Combustion Engines,” Int J Engine Res 12(3):194-208, 2011, doi:10.1177/1468087411402441.
- Dempsey, A.B., Curran, S.J., and Wagner, R.M. , “A Perspective on the Range of Gasoline Compression Ignition Combustion Strategies for High Engine Efficiency and Low NOx and Soot Emissions: Effects of In-Cylinder Fuel Stratification,” International Journal of Engine Research 17(8):897-917, 2016.
- Saisirirat, P., Togbé, C., Chanchaona, S., Foucher, F. et al. , “Auto-Ignition and Combustion Characteristics in HCCI and JSR Using 1-Butanol/N-Heptane and Ethanol/N-Heptane Blends,” Proceedings of the Combustion Institute. 33(2):3007-3014, 2011 Jan 1.
- Amsden, A.A. , “Kiva-3V: A Blockstructured KIVA Program for Engines with Vertical or Canted Valves,” Los Alamos National Laboratory 1997.
- Kee, R.J., Rupley, F.M., and Miller, J.A. , “Chemkin-II: A Fortran Chemical Kinetics Package for the Analysis of Gas-Phase Chemical Kinetics,” Sandia National Labs., Livermore, CA 1989.
- Wang, B.-L., Lee, C.-W., Reitz, R.D., Miles, P.C. et al. , “A Generalized Renormalization Group Turbulence Model and Its Application to a Light Duty Diesel Engine Operating in a Low Temperature Combustion Regime,” International Journal of Engine Research 14(3):279-292, 2013, doi:10.1177/1468087412465379.
- Patterson, M.A., Kong, S.-C., Hampson, G.J., and Reitz, R.D. , “Modeling the Effects of Fuel Injection Characteristics on Diesel Engine Soot and NOx Emissions,” SAE Technical Paper, 1994, https://doi.org/10.4271/940523.
- Nordin, P.A.N. , “Complex Chemistry Modeling of Diesel Spray Combustion,” Ph.D., Department of Thermo and Fluid Dynamics, Chalmers University of Technology, 2001.
- Zhang, Y., Jia, M., Liu, H., Xie, M. et al. , “Development of a New Spray/Wall Interaction Model for Diesel Spray under PCCI-Engine Relevant Conditions,” 24(1):41-80, 2014, doi:10.1615/AtomizSpr.2013008287.
- Xu, L., Bai, X.-S., Jia, M., Qian, Y. et al. , “Experimental and Modeling Study of Liquid Fuel Injection and Combustion in Diesel Engines with a Common Rail Injection System,” Applied Energy. 230:287-304,2018.
- Chang, Y. et al. , “Development of a Skeletal Mechanism for Diesel Surrogate Fuel by Using a Decoupling Methodology,” Combustion and Flame 162(10):3785-3802, 2015, doi:10.1016/j.combustflame.2015.07.016.
- Han, Z. and Reitz, R.D. , “A Temperature Walls Function Formulation for Variable-Density Turbulent Flows with Application to Engine Convective Heat Transfer Modeling,” Int J Heat Mass Transf 40(3):613-625, 1997.
- Yi, P., Long, W., Jia, M., Tian, J., and Li, B. , “Development of a Quasi-Dimensional Vaporization Model for Multi-Component Fuels Focusing on Forced Convection and High Temperature Conditions,” Int J Heat Mass Transf 97:130-145, 2016.
- Le, M.K., Zhang, R., Rao, L., Kook, S., and Hawkes, E.R. , “The Development of Hydroxyl and Soot in a Methyl Decanoate-Fuelled Automotive-Size Optical Diesel Engine,” Fuel 166:320-332, 2016.
- Genzale, C., Reitz, R., and Musculus, M. , “Effects of Piston Bowl Geometry on Mixture Development and Late-Injection Low-Temperature Combustion in a Heavy-Duty Diesel Engine,” SAE Int. J. Engines 1(1):913-937, 2009, https://doi.org/10.4271/2008-01-1330.