UDC 621.436.03
DOI 10.36461/NP.2025.76.4.014

OPERATION OF THE TRACTOR DIESEL ENGINE WITH DISTRIBUTED SUPPLY OF THE AIR-ACTIVATOR MIXTURE AT THE INTAKE
A.P. Ukhanov, Doctor of Technical Sciences, Professor;
M. V. Ryblov, Doctor of Technical Sciences, Associate Professor
Federal State Budgetary Educational Institution of Higher Education
"Penza State Agrarian University", Penza, Russia, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

The purpose of the study is to improve the energy and environmental performance parameters of a trac-tor diesel engine with a CSRDI chamber (developed by the Central Scientific Research Diesel Institute) by dis-tributing the AAM (air-activator mixture) to the cylinders during the intake stroke using an electronic system. The article describes the device and operating principle of an electronic system for distributed AAM supply and presents design options for an electrical signal converter that functions as both an activator injection timing sensor and a crankshaft rotation frequency sensor. Experimental studies of the system were conducted on an engine test stand equipped with a KS-56/4 dynamometer, an MMZ D-243-648 diesel engine, and measuring equipment for determining load, crankshaft rotation frequency, engine fuel consumption, activator and air flow, and the content of nitrogen oxides, carbon oxides, and hydrocarbons in the exhaust gases. The diesel engine, in addition to the standard fuel system with mechanical fuel supply control, was also equipped with the developed system for distributed AAM fuel supply.
As liquid activators, DT-L-62-K5 summer diesel fuel, ethanol, AI-92 gasoline, and binary fuels (50% rape-seed oil + 50% diesel fuel and 70% AI-92 gasoline + 30% ethanol) were used. Research results show that dis-tributed enrichment of the air charge with an activator, depending on its type and dose, increases the effec-tive power of the diesel engine by 7–16% and reduces the nitrogen oxide content in the exhaust gases by 39–74% in idle mode and by 6–25% in nominal mode.
Keywords: tractor diesel, electronic system, air-activator mixture, energy-environmental indicator.

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