MODELING OF AIR FILTER FOUNDATION PROCESSES IN MOTOR EXPERIMENTS

The publication deals with the methodology for conducting motor experiments to study the effect of diesel intake system air filter fouling on the economic and environmental performance of the engine. The methodology also makes it possible to track the influence of changes in the air excess ratio on these indicators within the operating modes of the diesel engine. In modern internal combustion engines with electronic control units, air supply processes are controlled automatically. In this case, based on the program laid down in the control unit, the consumption of both fuel and air charge is adjusted, and the engine operating modes are considered for the development of such a program, which are determined, in turn, by the type of internal combustion engine, its purpose, boost level, and operating conditions. At the same time, the main goal is to select the optimal consumption of both fuel and air, depending on the operating mode. In particular, the air consumption, the excess air ratio can be adjusted both upward in forced modes to improve the processes of mixture formation, the completeness of fuel combustion, and downward in partial modes to reduce pumping costs and increase mechanical efficiency. Thus, modeling the processes of air filter fouling, limiting the air flow through the diesel engine can be considered in a broader sense by conducting certain experimental evaluations for both forced and partial load modes. The proposed experimental methodology is characterized by simplicity and can be used in the educational process to consolidate the relevant theoretical provisions, in particular, in the course “Operation and Repair of Internal Combustion Engines”.