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Analysis of the Particulates Emitted by Internal Combustion Engines

Abstract : Diesel engine particulate matter (PM) emissions are nowadays globally regulated and limited through a driving cycle measurement. Thus, a known flow of diluted exhaust gases is sampled and filtered. The weighing of the filter before and after the test allows the determination of the soot mass emitted by the vehicle. If these values are useful to limit the pollution of the vehicles, they do not make it possible to the researchers to answer all their interrogations. Indeed, those need more precise information on the nature and the composition of the particles so, for example, to better understand and simulate the phenomena governing their formation. This information also makes it possible to know their toxicity, to compare in a finer way the emissions of various types of engines, Diesel or spark ignited, or to evaluate the influence of the fuel, the lubricant or the after-treatment system. These data are useful for both the car manufacturer and petroleum industry and also for professionals of health and those of environment. The various methods of sampling and analyses here described make it possible to obtain this more complete information on the particles such as the volatile or soluble compound contents, the content of sulphates, polycyclic aromatic compounds, metal, etc. The interest of these analyses is shown through results of various studies referring, for example, to the formation of the particles or the influence, on those, of the engine technology or of the fuel properties. This work enables us to propose axes of progress for the evolution of the existing methods of analysis or to define new analytical procedures, which could open new perspectives to the researchers.
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L. Forti, N. Jeuland, S. Raux, M. Pasquereau. Analysis of the Particulates Emitted by Internal Combustion Engines. Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, Institut Français du Pétrole (IFP), 2005, 60 (6), pp.995-1010. ⟨10.2516/ogst:2005070⟩. ⟨hal-02017268⟩



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