Abstract
The purpose of the study is to determine the physical essence of numeric values of a layout factor of the particulate matter filter in the exhaust system of the diesel plant for the mathematical mod el of its operational efficiency. Physical essence of this factor is that it makes it possible to take into account the influence of temperature of exhaust gases of the diesel engine at the inlet to the housing of the filter, which affects the course of processes of condensation of products of incomplete combustion of fuel on particulate matters and coagulation of particulate matters themselves in the flow of exhaust gases and, as a consequence, dimensions of particulate matters. The temperature of exhaust gases in such statement varies depending on location of the filter along the exhaust tract of the diesel engine (due to processes of extension of exhaust gases flow and heat exchange with the environment), as well as by the modes of external velocity characteristic of the diesel engine. Such influence was explored experimentally at the engine test bench with the autotractor diesel engine 2Ch10.5/12. The methods of obtaining the source data for the construction of the coefficient were described. Ecological parameters of exhaust gases of the diesel engine for different locations of the filter, received by direct and indirect measurements, were approximated by the linear regression method and formed the basis for the definition of numeric values and the formula to determine layout factor of the exhaust system. We established and mathematically described quantitative and qualitative relationships between indicators of operational efficiency of the particulate matter filter and the temperature of exhaust gases of the diesel engine 2 Ч 10.5/12 at the inlet to the filter.
Highlights
The level of ecological safety (ES) of an urban system is obviously determined by the numeric values of certain parameters
The problem on making pistol internal combustion engines (PICE) in power plants (PP) environmentally safe is tackled in a large number of fundamental scientific studies [1,2,3,4,5,6,7], which testifies to its relevance
As of 01.01.2016, norms of toxicity of automotive vehicles (AMV) and specialized equipment (SE) with diesel PICE of standards of UNECE Regulations Nos. 49 and 96 of EURO V level have been put into effect on the territory of Ukraine
Summary
The level of ecological safety (ES) of an urban system is obviously determined by the numeric values of certain parameters. The level of ES is formed in line with a synergetic principle, that is, it is not a simple algebraic sum of components Among such components, special attention should be paid to the sources of factors of environmental hazard that have intensive, multi-faceted influence even during their normal (not in emergency) operation. Special attention should be paid to the sources of factors of environmental hazard that have intensive, multi-faceted influence even during their normal (not in emergency) operation In urbosystems, such sources include power plants (PP), equipped with pistol internal combustion engines (PICE), in particular automotive vehicles (AMV) and specialized equipment (SE).
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