Influence and environmental assessment of harmful substances level in exhaust gases of diesel engines depending on the working modes
The authors suggest a comprehensive approach to assessing the environmental safety of machine and tractor units (MTU), which measures impact on the environment as a predicted i-th ecological safety factor. Microsoft Excel formulas that allow determining the amount of harmful exhaust emissions (NOx, CO, CH) depending on the level of the tractor‘s loading were developed. Using the theoretical dependencies, the total amount of harmful emissions (NOx, CO, CH) depending on engine power was obtained. In order to determine the modes of engine operation when volume of harmful substances emissions (NOx, CO, CH) reach maximum values the authors have developed dependencies of harmful emissions level that are placed on the regulatory characteristic of an engine. The proposed method for determining the level of harmful exhaust emissions, depending on the diesel tractor HTZ-170 engine mode, allows using it for other brands of tractors for agricultural purposes in the assessment of environmental safety.