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Measurements and Correlations of Local Cylinder-Wall Heat-Flux Relative to Near-Wall Chemiluminescence across Multiple Combustion Modes
Technical Paper
2020-01-0802
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Minimizing heat-transfer (HT) losses is important for both improving engine efficiency and increasing exhaust energy for turbocharging and exhaust aftertreatment management, but engine combustion system design to minimize these losses is hindered by significant uncertainties in prediction. Empirical HT correlations such as the popular Woschni model have been developed and various attempts at improving predictions have been proposed since the 1960s, but due to variations in facilities and techniques among various studies, comparison and assessment of modelling approaches among multiple combustion modes is not straightforward. In this work, simultaneous cylinder-wall temperature and OH* chemiluminescence high-speed video are all recorded in a single heavy-duty optical engine operated under multiple combustion modes. OH* chemiluminescence images provide additional insights for identifying the causes of near-wall heat flux changes. To measure spray, flow, and combustion effects on heat transfer using a cylinder-wall probe, a portion of the piston bowl is cut out to expose the cylinder wall to sprays, flows, and combustion that are normally confined to the bowl. The cylinder-wall heat flux is derived from the measured transient temperature and compared with Woschni HT correlation predictions using estimated local gas-temperatures. The local Woschni correlation predictions of heat flux and the HT coefficient for spark-ignition direct-injection (SIDI) and homogeneous charge compression-ignition (HCCI) match relatively well with measurements. For impinging jets of conventional diesel combustion (CDC), the Woschni HT correlation vastly under-predicts both heat flux and the HF coefficient. For CDC, the Woschni correlation underpredictions are likely due to its basis on internal-pipe flow, for which the flow is generally parallel rather than perpendicular to the wall as for impinging jets. Hence, for CDC, the predictions of local heat flux by empirical correlations like Woschni can be improved by using an impinging-jet basis.
Topic
Citation
Li, Z., Musculus, M., and Shechtman, Z., "Measurements and Correlations of Local Cylinder-Wall Heat-Flux Relative to Near-Wall Chemiluminescence across Multiple Combustion Modes," SAE Technical Paper 2020-01-0802, 2020, https://doi.org/10.4271/2020-01-0802.Data Sets - Support Documents
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References
- Heywood , J.B. Internal Combustion Engine Fundamentals 1st 1988
- Shahbakhti , M. , Ghazimirsaied , A. , and Koch , C.R. The Effect of Operating Conditions on HCCI Exhaust Gas Temperature Proceeding of Combustion Institute - Canadian Section 2009
- Alkidas , A.C. Heat Transfer Characteristics of a Spark-Ignition Engine ASME, J Heat Transfer 102 189 193 1980
- Hendricks , T. 2011
- Hendricks , T. and Ghandhi , J. Estimation of Surface Heat Flux in IC Engines Using Temperature Measurements: Processing Code Effects SAE Int. J. Engines 5 3 1268 1285 2012 https://doi.org/10.4271/2012-01-1208
- Hendricks , T. , Splitter , D.A. , and Ghandhi , J.B. Experimental Investigation of Piston Heat Transfer under Conventional Diesel and Reactivity-Controlled Compression Ignition Combustion Regimes International Journal of Engine Research 15 6 684 705 2014 doi.org/10.1177/1468087413512310
- Gingrich , E. , Ghandhi , J. , and Reitz , R. Experimental Investigation of Piston Heat Transfer in a Light Duty Engine under Conventional Diesel, Homogeneous Charge Compression Ignition, and Reactivity Controlled Compression Ignition Combustion Regimes SAE Int. J. Engines 7 1 375 386 2014 https://doi.org/10.4271/2014-01-1182
- Chang , J. , Güralp , O. , Filipi , Z. , Assanis , D. et al. New Heat Transfer Correlation for an HCCI Engine Derived from Measurements of Instantaneous Surface Heat Flux SAE Technical Paper 2004-01-2996 2004 https://doi.org/10.4271/2004-01-2996
- Woschni , G. Universally Applicable Equation for the Instantaneous Heat Transfer Coefficient in the Internal Combustion Engines SAE Technical Paper 670931 1968 https://doi.org/10.4271/670931
- Annand , W.J.D. Heat Transfer in the Cylinders of Reciprocating Internal Combustion Engines Proceedings of the Institution of Mechanical Engineers 177 1 973 996 1963
- Hohenberg , G.F. Advanced Approaches for Heat Transfer Calculations SAE Technical Paper 790825 1979 https://doi.org/10.4271/790825
- Opris , M.C. , Jason , R.R. , and Anderson , C.L. A Comparison of Time-Averaged Piston Temperatures and Surface Heat Flux between a Direct-Fuel Injected and Carbureted Two-Stroke Engine SAE Technical Paper 980763 1998 https://doi.org/10.4271/980763
- Espey , C. and Dec , J. Diesel Engine Combustion Studies in a Newly Designed Optical-Access Engine Using High-Speed Visualization and 2-D Laser Imaging SAE Technical Paper 930971 1993 https://doi.org/10.4271/930971
- Dec , J. A Conceptual Model of DI Diesel Combustion Based on Laser-Sheet Imaging SAE Technical Paper 970873 1997 https://doi.org/10.4271/970873
- Murphy , M.J. , Taylor , J.D. , and McCormick , R.L. 2004
- Bacha , J. , Freel , J. , Gibbs , A. et al. 2007
- Idicheria , C. and Pickett , L.M. Ignition, Soot Formation, and End of Combustion Transients in Diesel Combustion under High-EGR Conditions Int. J. Engine Res. 12 4 376 392 2011
- Kokjohn , S.L. , Musculus , M.P.B. , and Reitz , R.D. Evaluating Temperature and Fuel Stratification for Heat-Release Rate Control in a Reactivity-Controlled Compression-Ignition Engine Using Optical Diagnostics and Chemical Kinetics Modeling Combustion and Flame 162 6 2729 2742 2015
- http://www.techno-office.com/file/MED_TCS.pdf
- Higgins , B. and Siebers , D. Measurement of the Flame Lift-Off Location on DI Diesel Sprays Using OH Chemiluminescence SAE Technical Paper 2001-01-0918 2001 https://doi.org/10.4271/2001-01-0918
- Eckbreth , A.C. Laser Diagnostics for Combustion Temperature and Species Second 1996
- Genzale , C.L. , Pickett , L.M. , Hoops , A.A. , and Headrick , J.M. Laser Ignition of Multi-Injection Gasoline Sprays SAE Technical Paper 2011-01-0659 2011 https://doi.org/10.4271/2011-01-0659
- Sundqvist , B. Thermal Diffusivity and Thermal Conductivity of Chromel, Alumel, and Constantan in the Range 100-450 K Journal of Applied Physics 72 2 539 545 1992
- Collin , R. , Nygren , J. , Richter , M. , Aldén , M. et al. Simultaneous OH-and Formaldehyde-LIF Measurements in an HCCI Engine SAE Technical Paper 2003-01-3218 2003 https://doi.org/10.4271/2003-01-3218
- Musculus , M.P.B. , Lachaux , T. , Pickett , L.M. , and Cherian , A.I. End-of-Injection Over-Mixing and Unburned Hydrocarbon Emissions in Low-Temperature-Combustion Diesel Engines SAE Technical Paper 2007-01-0907 2007 https://doi.org/10.4271/2007-01-0907
- Bruneaux , G. Mixing Process in High Pressure Diesel Jets by Normalized Laser Induced Exciplex Fluorescence Part II: Wall Impinging versus Free Jet SAE Technical Paper 2005-01-2097 2005 https://doi.org/10.4271/2005-01-2097
- Köpple , F. , Seboldt , D. , Jochmann , P. , Hettinger , A. et al. Experimental Investigation of Fuel Impingement and Spray-Cooling on the Piston of a GDI Engine via Instantaneous Surface Temperature Measurements SAE Int. J. Engines 7 3 1178 1194 2014 https://doi.org/10.4271/2014-01-1447
- Jenkin , R.J. , James , E.H. , and Malalasekera , W. Thermal Boundary Layer Modelling in ‘motored’ Spark Ignition Engines SAE Technical Paper 961965 1996 https://doi.org/10.4271/961965
- Lyford-Pike , E.J. and Heywood , J.B. Thermal Boundary Layer Thickness in the Cylinder of a Spark-Ignition Engine International Journal of Heat and Mass Transfer 27 10 1873 1878 1984
- Pickett , L.M. and Lopez , J.J. Jet-Wall Interaction Effects on Diesel Combustion and Soot Formation SAE Technical Paper 2005-01-0921 2005 2005 https://doi.org/10.4271/2005-01-0921
- Hyvönen , J. , Wilhelmsson , C. , and Johansson , B. The Effect of Displacement on Air-Diluted Multi-Cylinder HCCI Engine Performance SAE Technical Paper 2006-01-0205 2006 https://doi.org/10.4271/2006-01-0205
- Roberts , G. , Rousselle , C.M. , Musculus , M. , Wissink , M. et al. RCCI Combustion Regime Transitions in a Single-Cylinder Optical Engine and a Multi-Cylinder Metal Engine SAE Int. J. Engines 10 5 2392 2413 2017 https://doi.org/10.4271/2017-24-0088
- Mehl , M. , Pitz , W.J. , Westbrook , C.K. , and Curran , H.J. Kinetic Modeling of Gasoline Surrogate Components and Mixtures under Engine Conditions Proceedings of the Combustion Institute 33 1 193 200 2011
- Musculus , M.P.B. and Kattke , K. Entrainment Waves in Diesel Jets SAE Int. J. Engines 2 1 1170 1193 2009 https://doi.org/10.4271/2009-01-1355
- Shibata , G. , Oyama , K. , Urushihara , T. , and Nakano , T. The Effect of Fuel Properties on Low and High Temperature Heat Release and Resulting Performance of an HCCI Engine SAE Technical Paper 2004-01-0553 2004 https://doi.org/10.4271/2004-01-0553
- Martin , H. Heat and Mass Transfer between Impinging Gas Jets and Solid Surfaces Advances in Heat Transfer 13 1 60 1977