SOOT FORMATION WHILE OPERATING A DIESEL POWER UNIT

Abstract

The article presents the technical, economic and environmental problems that arise during the operation of power units of any kind. Harmful components that poison the environment during the operation of diesel power units are a combination of different chemical compounds. Oxides of nitrogen, carbon monoxide and various unburned hydrocarbons are abundantly present in the exhaust gases of power units, but in our opinion soot is the most insidious, and it also takes up almost 50% of all diesel engine poisonous substances. The purpose of this work is to improve the technical, economic and environmental performance of the internal combustion engine, by feeding an additional air mixture into the cylinders. Possible ways to solve the above-mentioned problem are proposed, namely, one of the variants of charge turbulence by supplying additional air to the lower part of the cylinder liner at the end of the filling stroke and at the beginning of compression. The essence of this process is as follows: a jet of additional air creates kinetic energy of the main charge and simultaneously lowers the temperature inside the cylinder to the allowed values, thereby providing a favorable atmosphere for oxidizing the combustible mixture and helps reduce toxic components of combustion products, including soot. As a result of the foregoing, it should be concluded that the additional portion of air introduced into the cylinder contributes to an increase in the kinetic energy of the working fluid, and this in turn is the guarantor of the maximum burn-out of the air-fuel mixture. In addition, it presents the results of experiments in the form of graphs and on the basis of these data a comparative analysis was conducted and certain conclusions were made on the positive dynamics of technical, economic and environmental performance of power units.