This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Numerical Investigation of PPCI Combustion at Low and High Charge Stratification Levels
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Partially premixed compression ignition combustion is one of the low temperature combustion techniques which is being actively investigated. This approach provides a significant reduction of both soot and NOx emissions. Comparing to the homogeneous charge compression ignition mode, PPCI combustion provides better control on ignition timing and noise reduction through air-fuel mixture stratification which lowers heat release rate compared to other advanced combustion modes. In this work, CFD simulations were conducted for a low and a high air-fuel mixture stratification cases on a light-duty optical engine operating in PPCI mode. Such conditions for PRF70 as fuel were experimentally achieved by injection timing and spray targeting at similar thermodynamic conditions. After validating the computed results of cylinder pressure, apparent heat release rate, and OH* spatial distributions, differences in engine thermal load and mixture fraction distributions at first stage and second stage ignition were compared. Assuming similar second stage ignition timing which is provided by intake air heating, experimental and simulation results reveal that the time between first and second stage ignition shortens and combustion phases to the main stage ignition faster in the high stratification case. Using flame structure diagrams, this was attributed to availability of a larger range of mixture fractions with higher reactivity. Creating optimum air-fuel stratification then can be considered as a useful and additional controlling parameter for a PPCI engine combustion phasing and subsequent emission formation.
CitationMaghbouli, A., Lucchini, T., D'Errico, G., Izadi Najafabadi, M. et al., "Numerical Investigation of PPCI Combustion at Low and High Charge Stratification Levels," SAE Technical Paper 2017-01-0739, 2017, https://doi.org/10.4271/2017-01-0739.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
- Hessel, R., Foster, D., Aceves, S., Davisson, M. , "Modeling Iso-octane HCCI Using CFD with MultiZone Detailed Chemistry; Comparison to Detailed Speciation Data Over a Range of Lean Equivalence Ratios," SAE Technical Paper 2008-01-0047, 2008, doi:10.4271/2008-01-0047.
- Lechner, G., Jacobs, T., Chryssakis, C., Assanis, D. , "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, doi:10.4271/2005-01-0167.
- Maghbouli, A., Shafee, S., Khoshbakhti Saray, R., Yang, W. , "A Multi-Dimensional CFD-Chemical Kinetics Approach in Detection and Reduction of Knocking Combustion in Diesel-Natural Gas DualFuel Engines Using Local Heat Release Analysis," SAE Int. J. Engines 6(2):777–787, 2013, doi:10.4271/2013-01-0865.
- Epping, K., Aceves, S., Bechtold, R., and Dec, J., , "The Potential of HCCI Combustion for High Efficiency and Low Emissions," SAE Technical Paper 2002-01-1923, 2002, doi:10.4271/2002-01-1923.
- Takeda, Y., Keiichi, N., and Keiichi, N., , "Emission Characteristics of Premixed Lean Diesel Combustion with Extremely Early Staged Fuel Injection," SAE Technical Paper 961163, 1996, doi:10.4271/961163.
- Yanagihara, H., Sato, Y., and Mizuta, J. "a study of di diesel combustion under uniform higher-dispersed mixture formation". JSAE review, doi:10.1016/S0389-4304(97)00031-3:18(4)361–367, 1997.
- Li, C., Yin, L., Shamun, S., Tuner, M. , "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, doi:10.4271/2016-01-0767.
- Izadi Najafabadi, M., Dam, N., Somers, B., and Johansson, B., , "Ignition Sensitivity Study of Partially Premixed Combustion by Using Shadowgraphy and OH* Chemiluminescence Methods," SAE Technical Paper 2016-01-0761, 2016, doi:10.4271/2016-01-0761.
- Dempsey A. B., Curran S., Wagner R., and Cannella W. "effect of premixed fuel preparation for partially premixed combustion with a low octane gasoline on a light-duty multicylinder compression ignition engine". J. Eng. Gas Turb. Power, doi:10.1115/1.4030281:11(137)111506, 2015.
- Tang, Q., Liu, H., Li, M., and Yao, M., , "Study on the Double Injection Strategy of Gasoline Partially Premixed Combustion under a Light-Duty Optical Engine," SAE Int. J. Engines 9(4):2185–2193, 2016, doi:10.4271/2016-01-2299.
- Tamagna, D., Ra, Y., and Reitz, R., , "Multidimensional Simulation of PCCI Combustion Using Gasoline and Dual-Fuel Direct Injection with Detailed Chemical Kinetics," SAE Technical Paper 2007-01-0190, 2007, doi:10.4271/2007-01-0190.
- 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.
- Pal P., Keum S., and Im H. G. "assessment of flamelet versus multi-zone combustion modeling approaches for stratified-charge compression ignition engines". Int. J. Engine Research, doi:10.1177/1468087415571006:17(3)280–290, 2015.
- Kong S-C., Kim H., Reitz R. D., and Kim Y. "comparisons of diesel pcci combustion simulations using a representative interactive flamelet model and direct integration of cfd with detailed chemistry". J. Eng. Gas Turb. Power, doi:10.1115/1.2181597:129(1)252–260, 2006.
- Lucchini, T., Della Torre, A., D'Errico, G., Montenegro, G. , "Automatic Mesh Generation for CFD Simulations of Direct-Injection Engines," SAE Technical Paper 2015-01-0376, 2015, doi:10.4271/2015-01-0376.
- Weller H. G., Tabor G., Jasak H., and Fureby C. "A Tensorial Approach to CFD using Object Orientated Techniques". Computers in Physics, doi:10.1063/1.168744:12(6)620, 1998.
- Lucchini T., D’Errico G., Brusiani F., and Bianchi G. "A Finite-Element Based Mesh Motion Technique for Internal Combustion Engine Simulations". COMODIA 2008, MS2-3, 2008.
- Huh, K., Chang, I., and Martin, J., , "A Comparison of Boundary Layer Treatments for Heat Transfer in IC Engines," SAE Technical Paper 900252, 1990, doi:10.4271/900252.
- Maghbouli, A., Lucchini, T., D’Errico, G., and Onorati, A. "Effects of grid alignment on modeling the spray and mixing process in direct injection diesel engines under non-reacting operating conditions". Applied Thermal Engineering, doi:10.1016/j.applthermaleng.2015.07.051:91,901–912, 2015.
- Reitz, R. D. "Modeling Atomization Processes In High Pressure Vaporizing Sprays". Atomization and Spray Technology, pages 3,309–337, 1987.
- Lucchini, T., D’Errico, G., and Ettorre, D. "Numerical investigation of the spray-mesh-turbulence interactions for high-pressure, evaporating sprays at engine conditions". Int. J. Heat Fluid Flow, doi:10.1016/j.ijheatfluidflow.2010.07.006:32, 285–297, 2011.
- Liu, Y-D., Jia, M., Xie, M-Z., and Pang B.. "enhancement on a skeletal kinetic model for primary reference fuel oxidation by using a semidecoupling methodology". Energy & Fuels, pages 26(12)7069–7083, 2012.
- Aceves, S., Flowers, D., Westbrook, C., Smith, J. , "A Multi-Zone Model for Prediction of HCCI Combustion and Emissions," SAE Technical Paper 2000-01-0327, 2000, doi:10.4271/2000-01-0327.
- Maghbouli, A., Lucchini, T., D'Errico, G., Onorati, A. , "Parametric Comparison of Well-Mixed and Flamelet n-dodecane Spray Combustion with Engine Experiments at Well Controlled Boundary Conditions," SAE Technical Paper 2016-01-0577, 2016, doi:10.4271/2016-01-0577.
- Pei, Y. "an analysis of the structure of an n-dodecane spray flame using tpdf modelling". Combustion and Flame, 168:168, 420–435, 2016.
- Engine combustion network. http://www.sandia.gov/ecn/index.php, 2016.