This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Combustion Stratification and Dynamic Flame Tracing Analysis of Partially Premixed Combustion in a Compression Ignition Engine Fueled with Low-Octane Fuel
Technical Paper
2019-01-1151
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Partially premixed combustion (PPC) is a low-temperature combustion concept, which is between conventional diesel compression ignition (CI) and homogeneous charge compression ignition (HCCI). In PPC mode, the start of injection timing (SOI) is earlier than that of CI and later than that of HCCI and stratified in-cylinder fuel/air mixture can be formed to control the auto-ignition by the fuel injection timing. Gasoline fuel is beneficial for PPC mode because of its superior resistance to auto-ignition, which can enhance fuel-air charge mixing process with longer ignition delay time. The scope of this study is to investigate in-cylinder auto-ignition, combustion evolution, combustion stratification, and engine-out emissions at PPC operating mode under lean and low load engine conditions with different injection timings. Primary reference fuel PRF77, was selected as the low-octane test fuel. Fuel-tracer planar laser-induced fluorescence (PLIF) imaging and high-speed color imaging based on natural flame luminosity were performed to visualize fuel injection, spray-wall interaction, and subsequent combustion evolution. Based on the intensity of high sped combustion images, combustion stratification and dynamic flame tracing were evaluated to gain insights into the combustion evolution. Combustion stratification analysis indicated that more inhomogeneous low-temperature combustion was achieved at earlier fuel injection timings along with decreased natural flame luminosity and increased soot emission. Fuel-trapping in piston crevice zone was visualized by fuel-tracer PLIF. Fuel-trapping in squish zone and crevice zone was measured and linked to the formation of unburned hydrocarbon when stronger spray-wall interaction occurs under PPC operating mode. Injector dribbling during the late stage of combustion was found to be as an important source of soot formation through high-speed color imaging and dynamic flame tracing analysis.
Recommended Content
Authors
- Yanzhao An - King Abdullah University of Science & Technology
- Hao Shi - King Abdullah University of Science & Technology
- R Vallinayagam - King Abdullah University of Science & Technology
- Jaeheon Sim - Saudi Aramco
- Junseok Chang - Saudi Aramco
- Bengt Johansson - King Abdullah University of Science & Technology
Citation
An, Y., Shi, H., Vallinayagam, R., Sim, J. et al., "Combustion Stratification and Dynamic Flame Tracing Analysis of Partially Premixed Combustion in a Compression Ignition Engine Fueled with Low-Octane Fuel," SAE Technical Paper 2019-01-1151, 2019, https://doi.org/10.4271/2019-01-1151.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 |
Also In
References
- Noehre , C. , Andersson , M. , Johansson , B. , and Hultqvist , A. Characterization of Partially Premixed Combustion SAE Technical Paper 2006-01-3412 2006 10.4271/2006-01-3412
- Rohani , B. , Park , S.S. , and Bae , C. Effect of Injection Strategy on Smoothness, Emissions and Soot Characteristics of PCCI-Conventional Diesel Mode Transition Applied Thermal Engineering 93 1033 1042 2016 10.1016/j.applthermaleng.2015.09.075
- Qiu , L. , Cheng , X. , Liu , B. , Dong , S. , and Bao , Z. Partially Premixed Combustion Based on Different Injection Strategies in a Light-Duty Diesel Engine Energy 96 155 165 2016 10.1016/j.energy.2015.12.052
- Kalghatgi , G.T. , Hildingsson , L. , Harrison , A.J. , and Johansson , B. Autoignition Quality of Gasoline Fuels in Partially Premixed Combustion in Diesel Engines Proceedings of the Combustion Institute 33 2 3015 3021 2011 10.1016/j.proci.2010.07.007
- Kalghatgi , G.T. , Risberg , P. , and Ångström , H.-E. 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 10.4271/2007-01-0006
- Hao , H. , Liu , F. , Liu , Z. , and Fuquan , Z. Compression Ignition of Low-Octane Gasoline: Life Cycle Energy Consumption and Greenhouse Gas Emissions Applied Energy 181 391 398 2016 10.1016/j.apenergy.2016.08.100
- Leermakers , C.A.J. , Bakker , P.C. , Nijssen , B.C.W. , Somers , L.M.T. , and Johansson , B.H. Low Octane Fuel Composition Effects on the Load Range Capability of Partially Premixed Combustion Fuel 135 210 222 2014 10.1016/j.fuel.2014.06.044
- An , Y. , Jaasim , M. , Vallinayagam , R. , Vedharaj , S. et al. Numerical Simulation of Combustion and Soot under Partially Premixed Combustion of Low-Octane Gasoline Fuel 211 420 431 2018 10.1016/j.fuel.2017.09.064
- 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 10.1021/acs.energyfuels.7b02535
- An , Y. , Vallinayagam , R. , Vedharaj , S. , Masurier , J.-B. et al. Analysis of Transition from HCCI to CI via PPC with Low Octane Gasoline Fuels Using Optical Diagnostics and Soot Particle Analysis SAE Technical Paper 2017-01-2403 2017 10.4271/2017-01-2403
- Satoshi , H. , Kuboyama , T. , Moriyoshi , Y. , Iida , M. , and Watanabe , T. Analyses of Cycle-to-Cycle Variation of Combustion and In-Cylinder Flow in a Port Injection Gasoline Engine Using PIV and PLIF Techniques SAE Technical Paper 2017-01-2213 2017 10.4271/2017-01-2213
- Vallinayagam , R. , Yanzhao An , S.V. , Sim , J. , Chang , J. , and Johansson , B. Naphtha vs. Dieseline-The Effect of Fuel Properties on Combustion Homogeneity in Transition from CI Combustion towards HCCI Fuel 224 451 460 2018 10.1016/j.fuel.2018.03.123
- Vallinayagam , R. , Vedharaj , S. , An , Y. , Dawood , A. et al. Combustion Stratification for Naphtha from CI Combustion to PPC SAE Technical Paper 2017-01-0745 2017 10.4271/2017-01-0745
- Vedharaj , S. , Vallinayagam , R. , An , Y. , Najafabadi , M.I. et al. Combustion Homogeneity and Emission Analysis during the Transition from CI to HCCI for FACE I Gasoline SAE Technical Paper 2017-01-2263 2017 10.4271/2017-01-2263
- López , J.J. , García-Oliver , J.M. , García , A. , and Domenech , V. Gasoline Effects on Spray Characteristics, Mixing and Auto-Ignition Processes in a CI Engine under Partially Premixed Combustion Conditions Applied Thermal Engineering 70 1 996 1006 2014 10.1016/j.applthermaleng.2014.06.027
- 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 10.1016/j.apenergy.2016.10.108
- An , Y. , Vallinayagam , R. , Vedharaj , S. , Masurier , J.B. , Najafabadi , M.I. , Somers , B. , and Johansson , B. In-Cylinder Visualization and Engine Out Emissions from CI to PPC for Fuels with Different Properties The Proceedings of the International Symposium on Diagnostics and Modeling of Combustion in Internal Combustion Engines 2017 The Japan Society of Mechanical Engineers 2017 9 C310 10.1299/jmsesdm.2017.9.C310
- Najafabadi , I. , Mohammad , B.S. , Johansson , B. , and Dam , N. Combustion Stratification Study of Partially Premixed Combustion Using Fourier Transform Analysis of OH* Chemiluminescence Images International Journal of Engine Research 2017 10.1177/1468087417740270
- Najafabadi , M.I. Optical Study of Stratification for Partially Premixed Combustion 2017
- Otsu , N. A Threshold Selection Method from Gray-Level Histograms IEEE Transactions on Systems, Man, and Cybernetics 9 1 62 66 1979
- An , Y. , Jaasim , M. , Raman , V. , Hernández Pérez , F.E. et al. Homogeneous Charge Compression Ignition (HCCI) and Partially Premixed Combustion (PPC) in Compression Ignition Engine with Low Octane Gasoline Energy 158 181 191 2018 10.1016/j.energy.2018.06.057
- Liu , P. , Li , Z. , and Roberts , W.L. The Growth of PAHs and Soot in the Post-Flame Region Proceedings of the Combustion Institute 2018 10.1016/j.proci.2018.05.047
- Liu , P. , Zepeng , L. , Bennett , A. , He , L. et al. The Site Effect on PAHs formation in HACA-Based Mass Growth Process Combustion and Flame 199 54 68 2019 10.1016/j.combustflame.2018.10.010
- Liu , P. , Lin , H. , Yang , Y. , Shao , C. et al. Investigating the Role of CH2 Radicals in the HACA Mechanism The Journal of Physical Chemistry A 119 13 3261 3268 2015 10.1021/jp5124162
- Liu , P. , He , Z. , Hou , G.-L. , Guan , B. et al. The diagnostics of Laser-Induced Fluorescence (LIF) spectra of PAHs in flame with TD-DFT: Special Focus on Five-Membered Ring The Journal of Physical Chemistry A119 52 13009 13017 2015 10.1021/acs.jpca.5b10114
- Yoshida , A. , Narisawa , M. , and Hiroshi , T. Structure of Highly Turbulent Premixed Flames Symposium (International) on Combustion 24 1 519 525 1992 10.1016/S0082-0784(06)80066-4