Characterisation of flame-generated soot and soot-in-oil using electron tomography volume reconstructions and comparison with traditional 2D-TEM measurements

Article English OPEN
Orhan, O. ; Haffner-Staton, Ephraim ; La Rocca, Antonino ; Fay, Mike W. (2016)
  • Publisher: Elsevier
  • Journal: Tribology International (issn: 0301-679X, vol: 104, pp: 272-284)
  • Related identifiers: doi: 10.1016/j.triboint.2016.09.015
  • Subject: Mechanical Engineering | Surfaces, Coatings and Films | Surfaces and Interfaces | Mechanics of Materials

This work characterises soot nanoparticles by electron tomography using Weighted Back Projection algorithm and appraises the uncertainties in two-dimensional calculations by comparison with 3D parameters for flame-generated soot and diesel soot-in-oil. Bright field TEM was used to capture 2D images of soot. Large uncertainties exist in 2D-measured morphological parameters. The flame-generated particle showed an extensive 3D structure while the soot-in-oil was notably two-dimensional. Morphological parameters of flame-generated soot and diesel soot-in-oil were different; primary particles, volume, and surface area varied significantly over the range of viewing angle, with differences as large as 60%. 2D flame-generated soot volume underestimated 3D measurements by 38%; soot-in-oil 2D and 3D-derived volumes were within 4%. 2D calculations of fractal dimension generally underestimate the 3D value.
  • References (61)
    61 references, page 1 of 7

    [1] La Rocca A, Bonatesta F, Fay MW, Campanella F. Characterisation of soot in oil from a gasoline direct injection engine using Transmission Electron Microscopy. Tribol Int 2015;86:77-84.

    [2] Heywood JB. Pollutant formation and control. In: Duffy A, Morris JM, editors. Internal combustion engine fundamentals. New York: McGraw-Hill Publishing Company; 1988. p. 567-667.

    [3] Maricq MM, Podsiadlik DH, Brehob DD, Haghgooie M. Particulate emissions from a direct-injection spark-ignition (DISI) engine, SAE Technical Paper 1999- 01-1530; 1999.

    [4] Velji A, Yeom K, Wagner U, Spicher U, et al. Investigations of the formation and oxidation of soot inside a direct injection spark ignition engine using advanced laser-techniques, SAE Technical Paper 2010-01-0352; 2010.

    [5] Lucchini T, D'Errico G, Onorati A, Bonandrini G, Venturoli L, Di Gioia R. Development and application of a computational fluid dynamics methodology to predict fuel-air mixing and sources of soot formation in gasoline direct injection engines. Int J Engine Res 2014;15(5):581-96.

    [6] Clague ADH, Donnet JB, Wang TK, Peng JCM. A comparison of diesel engine soot with carbon black. Carbon 1999;37:1553-65.

    [7] Richter H, Howard JB. Formation of polycyclic aromatic hydrocarbons and their growth to soot, a review of chemical reaction pathways. Prog Energy Combust Sci 2000;26:565-608.

    [8] Ishiguro T, Takatori Y, Akihama K. Microstructure of diesel soot particles probed by electron microscopy: first observation of inner core and outer shell. Combust Flame 1997;108:1-2.

    [9] Omidvarborna H, Kumar A, Kim D-S. Recent studies on soot modeling for diesel combustion. Renew Sustain Energy Rev 2015;48:635-47.

    [10] Green DA, Lewis R. The effects of soot-contaminated engine oil on wear and friction: a review. Proc Inst Mech Eng Part D: J Automob Eng 2008;222 (9):1669-89.

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