INCREASING THE EFFICIENCY INDICATORS OF DIESEL ENGINES BY IMPROVING THE COOLING SYSTEM

The paper investigates methods for improving the performance of diesel engines through the optimization ofthe cooling system. Particular attention is paid to the thermal load increase observed when spark-ignition engines areconverted to operate on natural gas. Experimental studies were conducted on a gas-fueled engine installed in a diesel–gas microbus. The results highlight the importance of optimizing the temperature regime of gas engines. Based on theanalysis, design and operational recommendations are proposed to improve the cooling system, enabling a reduction incooling temperature from 120 °C to 90 °C.