Soot in the Lubricating Oil: An Overlooked Concern for the Gasoline Direct Injection Engine?
Technical Paper
2019-01-0301
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Formation of soot is a known phenomenon for diesel engines, however, only recently emerged for gasoline engines with the introduction of direct injection systems. Soot-in-oil samples from a three-cylinder turbocharged gasoline direct injection (GDI) engine have been analysed. The samples were collected from the oil sump after periods of use in predominantly urban driving conditions with start-stop mode activated. Thermogravimetric analysis (TGA) was performed to measure the soot content in the drained oils. Soot deposition rates were similar to previously reported rates for diesel engines, i.e. 1 wt% per 15,000 km, thus indicating a similar importance. Morphology was assessed by transmission electron microscopy (TEM). Images showed fractal agglomerates comprising multiple primary particles with characteristic core-shell nanostructure. Furthermore, large amorphous structures were observed. Primary particle sizes ranged from 12 to 55 nm, with a mean diameter of 30 nm and mode at 31 nm. Particle agglomerates were measured by nanoparticle tracking analysis (NTA). The agglomerates were found to range between 42 and 475 nm, with a mean size of 132 nm and mode at 100 nm. The distribution was shifted towards larger sizes with a minor concentration of very large agglomerates observed around 382 nm. While deposition rate and agglomerate morphology were similar to diesel engines, distinctive amorphous carbon and smaller particles were observed. Hence, existing knowledge for diesel applications might not be directly transferrable.
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Pfau, S., La Rocca, A., Haffner-Staton, E., Rance, G. et al., "Soot in the Lubricating Oil: An Overlooked Concern for the Gasoline Direct Injection Engine?," SAE Technical Paper 2019-01-0301, 2019, https://doi.org/10.4271/2019-01-0301.Data Sets - Support Documents
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References
- Zhao, F., Lai, M.C., and Harrington, D.L. , “Automotive Spark-Ignited Direct-Injection Gasoline Engines,” Prog. Energy Combust. Sci. 25(5):437-562, 1999, doi:10.1016/S0360-1285(99)00004-0.
- Li, Y., Xue, J., Johnson, K., Durbin, T. et al. , “Determination of Suspended Exhaust PM Mass for Light-Duty Vehicles,” SAE Technical Paper 2014-01-1594 , 2014, doi:10.4271/2014-01-1594.
- Su, J., Lin, W., Sterniak, J., Xu, M. et al. , “Particulate Matter Emission Comparison of Spark Ignition Direct Injection (SIDI) and Port Fuel Injection (PFI) Operation of a Boosted Gasoline Engine,” Journal of Engineering for Gas Turbines and Power 136(9), 2014, doi:10.1115/1.4027274.
- Heywood, J.B. , Internal Combustion Engine Fundamentals (New York: McGraw-Hill, 1988).
- Bockhorn, H. , “A Short Introduction to the Problem - Structure of the Following Parts,” . In: Soot Formation in Combustion: Mechanisms and Models. (Berlin, Heidelberg, Springer, 1994), 3-7, doi:10.1007/978-3-642-85167-4_1.
- Richter, H. and Howard, J.B. , “Formation of Polycyclic Aromatic Hydrocarbons and their Growth to Soot - A Review of Chemical Reaction Pathways,” , 2000, doi:10.1016/S0360-1285(00)00009-5.
- La Rocca, A., Di Liberto, G., Shayler, P.J., and Fay, M.W. , “The Nanostructure of Soot-in-Oil Particles and Agglomerates from an Automotive Diesel Engine,” Tribol. Int. 61:80-87, 2013, doi:10.1016/j.triboint.2012.12.002.
- Lapuerta, M., Martos, F.J., and Herreros, J.M. , “Effect of Engine Operating Conditions on the Size of Primary Particles Composing Diesel Soot Agglomerates,” J. Aerosol Sci. 38(4):455-466, 2007, doi:10.1016/j.jaerosci.2007.02.001.
- Neer, A. and Köylü, U.O. , “Effect of Operating Conditions on the Size, Morphology, and Concentration of Submicrometer Particulates Emitted from a Diesel Engine,” Combust. Flame 146(1-2):142-154, 2006, doi:10.1016/j.combustflame.2006.04.003.
- Uy, D., Ford, M.A., Jayne, D.T., O’Neill, A.E. et al. , “Characterization of Gasoline Soot and Comparison to Diesel Soot: Morphology, Chemistry, and Wear,” Tribol. Int. 80:198-209, 2014, doi:10.1016/j.triboint.2014.06.009.
- An, Y., Teng, S., Pei, Y., Qin, J. et al. , “An Experimental Study of Polycyclic Aromatic Hydrocarbons and Soot Emissions from a GDI Engine Fueled with Commercial Gasoline,” Fuel 164:160-171, 2016, doi:10.1016/j.fuel.2015.10.007.
- Gaddam, C.K. and Vander Wal, R.L. , “Physical and Chemical Characterization of SIDI Engine Particulates,” Combust. Flame 160(11):2517-2528, 2013, doi:10.1016/j.combustflame.2013.05.025.
- Liati, A., Schreiber, D., Dimopoulos Eggenschwiler, P., Arroyo Rojas Dasilva, Y. et al. , “Electron Microscopic Characterization of Soot Particulate Matter Emitted by Modern Direct Injection Gasoline Engines,” Combust. Flame 166:307-315, 2016, doi:10.1016/j.combustflame.2016.01.031.
- Pfau, S.A., La Rocca, A., Haffner-Staton, E., Rance, G.A. et al. , “Comparative Nanostructure Analysis of Gasoline Turbocharged Direct Injection and Diesel Soot-in-Oil with Carbon Black,” Carbon 139:342-352, 2018, doi:10.1016/j.carbon.2018.06.050.
- Antusch, S., Dienwiebel, M., Nold, E., Albers, P. et al. , “On the Tribochemical Action of Engine Soot,” Wear 269(1-2):1-12, 2010, doi:10.1016/j.wear.2010.02.028.
- Esangbedo, C., Boehman, A.L., and Perez, J.M. , “Characteristics of Diesel Engine Soot that Lead to Excessive Oil Thickening,” Tribol. Int. 47:194-203, 2012, doi:10.1016/j.triboint.2011.11.003.
- Rissler, J., Swietlicki, E., Bengtsson, A., Boman, C. et al. , “Experimental Determination of Deposition of Diesel Exhaust Particles in the Human Respiratory Tract,” J. Aerosol Sci. 48:18-33, 2012, doi:10.1016/j.jaerosci.2012.01.005.
- Broday, D.M. and Rosenzweig, R. , “Deposition of Fractal-like Soot Aggregates in the Human Respiratory Tract,” J. Aerosol Sci. 42(6):372-386, 2011, doi:10.1016/j.jaerosci.2011.03.001.
- Pedata, P., Stoeger, T., Zimmermann, R., Peters, A. et al. , “Are we Forgetting the Smallest, Sub 10 Nm Combustion Generated Particles?” Part. Fibre Toxicol. 12(34), 2015, doi:10.1186/s12989-015-0107-3.
- Baldauf, R.W., Devlin, R.B., Gehr, P., Giannelli, R. et al. , “Ultrafine Particle Metrics and Research Considerations: Review of the 2015 UFP Workshop,” Int. J. Environ. Res. Public Health 13(11), 2016, doi:10.3390/ijerph13111054.
- Lahouij, I., Dassenoy, F., Vacher, B., Sinha, K. et al. , “Understanding the Deformation of Soot Particles/Agglomerates in a Dynamic Contact: Tem In Situ Compression and Shear Experiments,” Tribol. Lett. 53(1):91-99, 2014, doi:10.1007/s11249-013-0246-3.
- Green, D.A. and Lewis, R. , “The Effects of Soot-Contaminated Engine Oil on Wear and Friction: A Review,” Proc. Inst. Mech. Eng. Part D J. Automob. Eng. 222(9):1669-1689, 2008, doi:10.1243/09544070JAUTO468.
- Li, S., Csontos, A.A., Gable, B.M., Passut, C.A. et al. , “Wear in Cummins M-11 / EGR Test Engines,” SAE Technical Paper 2002-01-1672 , 2002.
- Gautam, M., Chitoor, K., and Balla, S. , “Contribution of Soot Contaminated Oils to Wear-Part II,” SAE Technical Paper 1999-01-1519 , 1999, doi:10.4271/1999-01-1519.
- Sato, H., Tokuoka, N., Yamamoto, H., and Sasaki, M. , “Study on Wear Mechanism by Soot Contaminated in Engine Oil (First Report: Relation between Characteristics of Used Oil and Wear),” SAE Technical Paper 1999-01-3573 , 1999, doi:10.4271/1999-01-3573.
- Polat, O., Ebrinc, A.A., Ozen, C., and Akca, S. , “Timing Chain Wear Assessment with Different Type of Oils,” SAE Technical Paper 2009-01-0198 , 2009, doi:10.4271/2009-01-0198.
- Stehouwer, D.M., Shank, G., Herzog, S.N., Hyndman, C.W. et al. , “Sooted Diesel Engine Oil Pumpability Studies as the Basis of a New Heavy Duty Diesel Engine Oil Performance Specification,” SAE Technical Paper 2002-01-1671 , 2002, doi:10.4271/2002-01-1671.
- Covitch, M.J., Humphrey, B.K., and Ripple, D.E. , “Oil Thickening in the Mack T-7 Engine Test-Fuel Effects and the Influence of Lubricant Additives on Soot Aggregation”, SAE Technical Paper 852126 , 1985, doi:10.4271/852126.
- Berbezier, I., Martin, J.M., and Kapsa, P. , “The Role of Carbon in Lubricated Mild Wear,” Tribol. Int. 19(3):115-122, 1986, doi:10.1016/0301-679X(86)90016-2.
- Mainwaring, R. , “Soot and Wear in Heavy Duty Diesel Engines,” SAE Technical Paper 971631 , 1997, doi:10.4271/971631.
- Bardasz, E.A., Cowling, S.V., Ebeling, V.L., George, H.F. et al. , “Understanding Soot Mediated Oil Thickening through Designed Experimentation - Part 1: Mack EM6-287, GM 6.2L,” SAE Technical Paper 952527 , 1995, doi:10.4271/952527.
- Clague, A.D.H., Donnet, J.B., Wang, T.K., and Peng, J.C.M. , “A Comparison of Diesel Engine Soot with Carbon Black,” Carbon 37(10):1553-1565, 1999, doi:10.1016/S0008-6223(99)00035-4.
- Salamanca, M., Agudelo, J.R., Mondragón, F., and Santamaría, A. , “Chemical Characteristics of the Soot Produced in a High-Speed Direct Injection Engine Operated with Diesel/Biodiesel Blends,” Combust. Sci. Technol. 184(7):1179-1190, 2012, doi:10.1080/00102202.2012.664007.
- Bredin, A., Larcher, A.V., and Mullins, B.J. , “Thermogravimetric Analysis of Carbon Black and Engine Soot - Towards a more Robust Oil Analysis Method,” Tribol. Int. 44(12):1642-1650, 2011, doi:10.1016/j.triboint.2011.06.002.
- Yehliu, K., Vander Wal, R.L., Armas, O., and Boehman, A.L. , “Impact of Fuel Formulation on the Nanostructure and Reactivity of Diesel Soot,” Combust. Flame 159(12):3597-3606, 2012, doi:10.1016/j.combustflame.2012.07.004.
- Mullins, G. and Truhan, J. , “Measurement of Semi-Volatiles in Used Natural Gas Engine Oil Using Thermogravimetric Analysis,” Int. J. Engine Res. 8(5):439-448, 2007, doi:10.1243/14680874JER00907.
- Gautam, M., Durbha, M., Chitoor, K., Jaraiedi, M. et al. , “Contribution of Soot Contaminated Oils to Wear,” SAE Technical Paper 981406 , 1998, doi:10.4271/981406.
- Lockwood, F.E., Zhang, Z.G., Choi, S.U.S., and Yu, W. , “Effect of Soot Loading on the Thermal Characteristics of Diesel Engine Oils,” SAE Technical Paper 2001-01-1714 , 2001, doi:10.4271/2001-01-1714.
- Di Liberto, G., La Rocca, A., and Shayler, P. , "Computational Analysis of the Influence of Exhaust Gas Recirculation on the Rate of Soot Transfer to Lubricating Engine Oil," FISITA Technical Paper F2016-ESYG-020, in 36th FISITA World Automotive Congress, Korea, Sep. 26-30, 2016.
- Sharma, V., Uy, D., Gangopadhyay, A., O’Neill, A. et al. , “Structure and Chemistry of Crankcase and Exhaust Soot Extracted from Diesel Engines,” Carbon 103:327-338, 2016, doi:10.1016/j.carbon.2016.03.024.
- Zhang, R. and Kook, S. , “Influence of Fuel Injection Timing and Pressure on In-Flame Soot Particles in an Automotive-Size Diesel Engine,” Environ. Sci. Technol. 48(14):8243-8250, 2014, doi:10.1021/es500661w.
- Zhu, J., Lee, K.O., Yozgatligil, A., and Choi, M.Y. , “Effects of Engine Operating Conditions on Morphology, Microstructure, and Fractal Geometry of Light-Duty Diesel Engine Particulates,” Proc. Combust. Inst. 30(2):2781-2789, 2005, doi:10.1016/j.proci.2004.08.232.
- Key, S., La Rocca, A., Fay, M., Rance, G. et al. , “Morphological Characterisation of Diesel Soot in Oil and the Associated Extraction Dependence,” SAE Technical Paper 2018-01-0935 , 2018, doi:10.4271/2018-01-0935.
- La Rocca, A., Bonatesta, F., Fay, M.W., and Campanella, F. , “Characterisation of Soot in Oil from a Gasoline Direct Injection Engine Using Transmission Electron Microscopy,” Tribol. Int. 86:77-84, 2015, doi:10.1016/j.triboint.2015.01.025.
- Martos, F.J., Lapuerta, M., Expósito, J.J., and Sanmiguel-Rojas, E. , “Overestimation of the Fractal Dimension from Projections of Soot Agglomerates,” Powder Technol. 311:528-536, 2017, doi:10.1016/j.powtec.2017.02.011.
- Orhan, O., Haffner-Staton, E., La Rocca, A., and Fay, M. , “Characterisation of Flame-Generated Soot and Soot-in-Oil Using Electron Tomography Volume Reconstructions and Comparison with Traditional 2D-TEM Measurements,” Tribol. Int. 104:272-284, 2016, doi:10.1016/j.triboint.2016.09.015.
- La Rocca, A., Campbell, J., Fay, M.W., and Orhan, O. , “Soot-In-Oil 3D Volume Reconstruction through the Use of Electron Tomography: An Introductory Study,” Tribol. Lett. 61(1), 2016, doi:10.1007/s11249-015-0625-z.
- Haffner-Staton, E., La Rocca, A., and Fay, M.W. , “Progress towards a Methodology for High Throughput 3D Reconstruction of Soot Nanoparticles Via Electron Tomography,” J. Microsc., 2018, doi:10.1111/jmi.12680.
- Lee, K.O., Seong, H., Sakai, S., Hageman, M. et al. , “Detailed Morphological Properties of Nanoparticles from Gasoline Direct Injection Engine Combustion of Ethanol Blends,” SAE Technical Paper 2013-24-0185 , 2013, doi:10.4271/2013-24-0185.
- Wang, C., Xu, H., Herreros, J.M., Wang, J. et al. , “Impact of Fuel and Injection System on Particle Emissions from a GDI Engine,” Appl. Energy 132:178-191, 2014, doi:10.1016/j.apenergy.2014.06.012.
- Graves, B.M., Koch, C.R., and Olfert, J.S. , “Morphology and Volatility of Particulate Matter Emitted from a Gasoline Direct Injection Engine Fuelled on Gasoline and Ethanol Blends,” J. Aerosol Sci. 105:166-178, 2017, doi:10.1016/j.jaerosci.2016.10.013.
- La Rocca, A., Di Liberto, G., Shayler, P.J., Parmenter, C.D.J. et al. , “Application of Nanoparticle Tracking Analysis Platform for the Measurement of Soot-in-Oil Agglomerates from Automotive Engines,” Tribol. Int. 70:142-147, 2014, doi:10.1016/j.triboint.2013.09.018.
- Lee, K.O., Cole, R., Sekar, R., Choi, M.Y. et al. , “Morphological Investigation of the Microstructure, Dimensions, and Fractal Geometry of Diesel Particulates,” Proc. Combust. Inst. 29(1):647-653, 2002, doi:10.1016/S1540-7489(02)80083-9.
- Liati, A., Dimopoulos Eggenschwiler, P., Schreiber, D., Zelenay, V. et al. , “Variations in Diesel Soot Reactivity along the Exhaust after-Treatment System, Based on the Morphology and Nanostructure of Primary Soot Particles,” Combust. Flame 160(3):671-681, 2013, doi:10.1016/j.combustflame.2012.10.024.
- Ferraro, G., Fratini, E., Rausa, R., Fiaschi, P. et al. , “Multiscale Characterization of some Commercial Carbon Blacks and Diesel Engine Soot,” Energy Fuels 30(11):9859-9866, 2016, doi:10.1021/acs.energyfuels.6b01740.
- Barone, T.L., Storey, J.M.E., Youngquist, A.D., and Szybist, J.P. , “An Analysis of Direct-Injection Spark-Ignition (DISI) Soot Morphology,” Atmos. Environ. 49:268-274, 2012, doi:10.1016/j.atmosenv.2011.11.047.
- La Rocca, A., Di Liberto, G., Shayler, P., Parmenter, C. et al. , “A Novel Diagnostics Tool for Measuring Soot Agglomerates Size Distribution in Used Automotive Lubricant Oils,” SAE Int. J. Fuels Lubr. 7(1):301-306, 2014, doi:10.2307/26273078.
- Kim, C., Passut, C.A., and Zang, D.M. , “Relationships Among Oil Composition, Combustion-Generated Soot, and Diesel Engine Valve Train Wear,” SAE Technical Paper 922199 , 1992, doi:10.4271/922199.
- Liu, C., Nemoto, S., and Ogano, S. , “Effect of Soot Properties in Diesel Engine Oils on Frictional Characteristics,” Tribol. Trans. 46(1):12-18, 2003, doi:10.1080/10402000308982593.
- Vander Wal, R.L. and Tomasek, A.J. , “Soot Oxidation: Dependence upon Initial Nanostructure,” Combust. Flame 134(1-2):1-9, 2003, doi:10.1016/S0010-2180(03)00084-1.
- Alfè, M., Apicella, B., Barbella, R., Rouzaud, J.N. et al. , “Structure-Property Relationship in Nanostructures of Young and Mature Soot in Premixed Flames,” Proc. Combust. Inst. 32(1):697-704, 2009, doi:10.1016/j.proci.2008.06.193.
- Patel, M. and Aswath, P.B. , “Morphology, Structure and Chemistry of Extracted Diesel Soot: Part II: X-Ray Absorption near Edge Structure (XANES) Spectroscopy and High Resolution Transmission Electron Microscopy,” Tribol. Int. 52:17-28, 2012, doi:10.1016/j.triboint.2012.02.022.
- Sharma, V., Bagi, S., Patel, M., Aderniran, O. et al. , “Influence of Engine Age on Morphology and Chemistry of Diesel Soot Extracted from Crankcase Oil,” Energy Fuels 30(3):2276-2284, 2016, doi:10.1021/acs.energyfuels.5b02512.