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Influence of Directly Injected Gasoline and Porosity Fraction on the Thermal Properties of HCCI Combustion Chamber Deposits
Technical Paper
2015-24-2449
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The limited operational range of low temperature combustion engines is influenced by near-wall conditions. A major factor is the accumulation and burn-off of combustion chamber deposits. Previous studies have begun to characterize in-situ combustion chamber deposit thermal properties with the end goal of understanding, and subsequently replicating the beneficial effects of CCD on HCCI combustion. Combustion chamber deposit thermal diffusivity was found to differ depending on location within the chamber, with significant initial spatial variations, but a certain level of convergence as equilibrium CCD thickness is reached. A previous study speculatively attributed these spatially dependent CCD diffusivity differences to either local differences in morphology, or interactions with the fuel-air charge in the DI engine. In this work, the influence of directly injected gasoline on CCD thermal diffusivity is measured using the in-situ technique based on fast thermocouple signals. Comparison of measurements under motoring and firing conditions leads to a conclusion that directly injected fuel trapped within CCD porosity has a negligible impact on in-situ thermal diffusivity for cylinder head CCD. An analytical investigation quantifies the sensitivity of CCD diffusivity to absorbed air or fuel, respectively, and indicates that variation in CCD porosity, rather than the presence of fuel in the pores, accounts for thermal diffusivity differences between cylinder head and piston CCD.
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Hoffman, M. and Filipi, Z., "Influence of Directly Injected Gasoline and Porosity Fraction on the Thermal Properties of HCCI Combustion Chamber Deposits," SAE Technical Paper 2015-24-2449, 2015, https://doi.org/10.4271/2015-24-2449.Also In
References
- Güralp , O. , Hoffman , M. , Assanis , D. , Filipi , Z. et al. Characterizing the Effect of Combustion Chamber Deposits on a Gasoline HCCI Engine SAE Technical Paper 2006-01-3277 2006 10.4271/2006-01-3277
- Güralp , O.A. The Effect of Combustion Chamber Deposits on Heat Transfer and Combustion in a Homogeneous Charge Compression Ignition Engine PhD Dissertation University of Michigan Department of Mechanical Engineering 2008
- Güralp , O. , Hoffman , M. , Assanis , D. , Filipi , Z. et al. Thermal Characterization of Combustion Chamber Deposits on the HCCI Engine Piston and Cylinder Head Using Instantaneous Temperature Measurements SAE Technical Paper 2009-01-0668 2009 10.4271/2009-01-0668
- Kamo , R. , Assanis , D. , and Bryzik , W. Thin Thermal Barrier Coatings for Engines SAE Technical Paper 890143 1989 10.4271/890143
- Kosaka , H. , Wakisaka , Y. , Nomura , Y. , Hotta , Y. et al. Concept of “Temperature Swing Heat Insulation” in Combustion Chamber Walls, and Appropriate Thermo-Physical Properties for Heat Insulation Coat SAE Int. J. Engines 6 1 142 149 2013 10.4271/2013-01-0274
- Powell , T. , Killingswroth , N. , Hoffman , M. , Prucka , R. , and Filipi , Z. Simulating the Gas-Wall Boundary Conditions on a Thermal Barrier Coated Piston in a Low Temperature Combustion Engine Int. J. of Powertrains, submitted, IJPT-105629 2015
- Allen , J. and Law , D. Variable Valve Actuated Controlled Auto-Ignition: Speed Load Maps and Strategic Regimes of Operation SAE Technical Paper 2002-01-0422 2002 10.4271/2002-01-0422
- Eng , J. Characterization of Pressure Waves in HCCI Combustion SAE Technical Paper 2002-01-2859 2002 10.4271/2002-01-2859
- Christensen , M. and Johansson , B. Influence of Mixture Quality on Homogeneous Charge Compression Ignition SAE Technical Paper 982454 1998 10.4271/982454
- Kaneko , N. , Ando , H. , Ogawa , H. , and Miyamoto , N. Expansion of the Operating Range with In-Cylinder Water Injection in a Premixed Charge Compression Ignition Engine SAE Technical Paper 2002-01-1743 2002 10.4271/2002-01-1743
- Sjöberg , M. , Dec , J. , and Cernansky , N. Potential of Thermal Stratification and Combustion Retard for Reducing Pressure-Rise Rates in HCCI Engines, Based on Multi-Zone Modeling and Experiments SAE Technical Paper 2005-01-0113 2005 10.4271/2005-01-0113
- Krasselt , J. , Foster , D. , Ghandhi , J. , Herold , R. et al. Investigations into the Effects of Thermal and Compositional Stratification on HCCI Combustion - Part I: Metal Engine Results SAE Technical Paper 2009-01-1105 2009 10.4271/2009-01-1105
- Herold , R. , Krasselt , J. , Foster , D. , Ghandhi , J. et al. Investigations into the Effects of Thermal and Compositional Stratification on HCCI Combustion - Part II: Optical Engine Results SAE Int. J. Engines 2 1 1034 1053 2009 10.4271/2009-01-1106
- Martinez-Frias , J. , Aceves , S. , Flowers , D. , Smith , J. et al. HCCI Engine Control by Thermal Management SAE Technical Paper 2000-01-2869 2000 10.4271/2000-01-2869
- Christensen , M. and Johansson , B. Supercharged Homogeneous Charge Compression Ignition (HCCI) with Exhaust Gas Recirculation and Pilot Fuel SAE Technical Paper 2000-01-1835 2000 10.4271/2000-01-1835
- Milovanovic , N. , Blundell , D. , Pearson , R. , Turner , J. et al. Enlarging the Operational Range of a Gasoline HCCI Engine By Controlling the Coolant Temperature SAE Technical Paper 2005-01-0157 2005 10.4271/2005-01-0157
- Christensen , M. , Johansson , B. , and Einewall , P. Homogeneous Charge Compression Ignition (HCCI) Using Isooctane, Ethanol and Natural Gas - A Comparison with Spark Ignition Operation SAE Technical Paper 972874 1997 10.4271/972874
- Dec , J. , Hwang , W. , and Sjöberg , M. An Investigation of Thermal Stratification in HCCI Engines Using Chemiluminescence Imaging SAE Technical Paper 2006-01-1518 2006 10.4271/2006-01-1518
- Cheng , S. and Kim , C. Effect of Engine Operating Parameters on Engine Combustion Chamber Deposits SAE Technical Paper 902108 1990 10.4271/902108
- Nakic , D. , Assanis , D. , and White , R. Effect of Elevated Piston Temperature on Combustion Chamber Deposit Growth SAE Technical Paper 940948 1994 10.4271/940948
- Kalghatgi , G. , McDonald , C. , and Hopwood , A. An Experimental Study of Combustion Chamber Deposits and Their Effects in a Spark-Ignition Engine SAE Technical Paper 950680 1995 10.4271/950680
- LaVigne , P. , Anderson , C. , and Prakash , C. Unsteady Heat Transfer and Fluid Flow in Porous Combustion Chamber Deposits SAE Technical Paper 860241 1986 10.4271/860241
- Tree , D. , Wiczynski , P. , and Yonushonis , T. Experimental Results on the Effect of Piston Surface Roughness and Porosity on Diesel Engine Combustion SAE Technical Paper 960036 1996 10.4271/960036
- Tree , D. , Oren , D. , Yonushonis , T. , and Wiczynski , P. Experimental Measurements on the Effect of Insulated Pistons on Engine Performance and Heat Transfer SAE Technical Paper 960317 1996 10.4271/960317
- Hoffman , Mark A. , Lawler , Benjamin J. , Güralp , O. , Najt , Paul M. , Filipi , Zoran S 2014 The impact of a magnesium zirconate thermal barrier coating on homogeneous charge compression ignition operational variability and the formation of combustion chamber deposits International Journal of Engine Research 10.1177/1468087414561274
- Chang , J. , Filipi , Z. , Assanis , D. , Kuo , T-W. , Najt , P. , and Rask , R. Characterizing the Thermal Sensitivity of a Gasoline Homogeneous Charge Compression Ignition Engine With Measurements of Instantaneous Wall Temperature and Heat Flux International Journal of Engine Research 6 2005
- Dronniou , N. and Dec , J. Investigating the Development of Thermal Stratification from the Near-Wall Regions to the Bulk-Gas in an HCCI Engine with Planar Imaging Thermometry SAE Int. J. Engines 5 3 1046 1074 2012 10.4271/2012-01-1111
- Nishiwaki , K. and Hafnan , M. The Determination of Thermal Properties of Engine Combustion Chamber Deposits SAE Technical Paper 2000-01-1215 2000 10.4271/2000-01-1215
- Hopwood , A. , Chynoweth , S. , and Kalghatgi , G. A Technique to Measure Thermal Diffusivity and Thickness of Combustion Chamber Deposits In-Situ SAE Technical Paper 982590 1998 10.4271/982590
- Hoffman , M. , Lawler , B. , Filipi , Z. , Guralp , O. , and Najt , P. Development of a Device for the Nondestructive Thermal Diffusivity Determination of Combustion Chamber Deposits and Thin Coatings J. of Heat Transfer 136 7 071601 March 17 2014 10.1115/1.4026908
- 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 10.4271/2004-01-2996
- Woodside , W. , and Messmer , J.H. Thermal Conductivity of Porous Media II. Consolidated Rocks J. Appl. Phys. 32 1699 1961
- Shafiro , B. , and Kachanov , M. Anisotropic Effective Conductivity of Materials with Nonrandomly Oriented Inclusions of Diverse Ellipsoidal Shapes J. Appl. Phys. 2000 87 12 8561 8569
- Clyne , T.W. , Golosnoy , I.O. , Tan , J.C. and Markaki , A.E. Porous Materials for Thermal Management under Extreme Conditions Phil. Trans. A Math. Phys. Eng. Sci. 2006 364 1838 125 146
- Null , M.R. , Lozier , W.W. , and Moore , A.W. Thermal diffusivity and thermal conductivity of pyrolytic graphite from 300 to 2700K Carbon 11 2 81 87 1973
- Perry , R.H. and Green D.W. Perry's Chemical Engineers' Handbook McGraw Hill 1999
- Bejan , A. 2004 Convection Heat Transfer 3rd John Wiley & Sons New York, NY. 893