Abstract
The article touches upon the problem of the power unit’s operation, which has been modernized in order to increase its technical, economic and environmental indicators. Namely, it addresses the main issues of quantitative and qualitative mixture formation, the correct location of the fittings for supplying additional air is selected, the effect of additional air on the physical processes occurring in the cylinder of the power unit during its operation is determined. In addition, it considers the theoretical aspects of the dynamics of additional air introduced at the end of the filling and at the beginning of compression in the cylinder of the power unit. All of the above must be done so that the measures taken to improve the technical, economic and environmental indicators of the power unit do not contradict the conditions and requirements that were originally laid down by the manufacturer when developing this power unit. Firstly, today it is quite difficult to achieve this, the reason for this is the fact that the power units each time become more powerful in order to meet all the requirements that arise in the context of fierce competition between different manufacturers, and secondly - a high degree of unification of the constituent parts of automotive - tractor equipment and other transport technological machines and equipment that are equipped with ICE. Based on this, any refinement, even the slightest, leads to significant changes in all the main output parameters of the nodes and assemblies of the machine. In addition, it is necessary, whenever possible, to take into account all types of modernization that have been done by other researchers to improve the abovementioned parameters of the power unit.
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