Technological Scheme for Utilizing Exhaust Gas Heat from a Self-Propelled Machine

The paper shows that the efficiency of the machine and tractor fleet is significantly influenced by operating conditions. It is known that the harsher the operating conditions, particularly those related to climate, the higher the frequency of failures, which, in turn, results in the reduced durability and efficiency of the equipment. One way to mitigate failures and power losses in the motor-transmission unit, as well as improve fuel efficiency, is by utilizing the waste heat from the internal combustion engine. This approach ensures an optimal temperature in the main units of the machinery at negative ambient temperatures. (Research purpose) The research aims to develop a technological scheme for utilizing waste heat from the internal combustion engine, specifically the heat from exhaust gases, to maintain the optimal temperature in the main units of the machine and tractor unit. (Materials and methods) The potential for using exhaust gas heat in the proposed scheme was studied and assessed using an experimental setup. The results were processed using the exergy research method. (Results and discussion) It is found that the power of the exhaust gas heat fl w at various engine operating modes provides favorable conditions for its utilization in the proposed scheme. Based on the research results, a system for maintaining a set temperature regime in the main units and trailer unit of a self-propelled machine was developed and patented. (Conclusions) The presence of significant kinetic and thermal energy in the exhaust gases enables its secondary use. A technological scheme for utilizing the heat of exhaust gases from internal combustion engines has been developed as a system for maintaining a set temperature regime in the main units and trailer unit of a self-propelled machine. The application of the developed system will maximize the utilization coefficient of the heat released during fuel combustion in the engine.