Theoretical prerequisites of the possibility to influence the noise of the power unit of machines for various purposes

The existing economic necessity to increase production efficiency while reducing production costs requires using all opportunities to reduce the noise of equipment used in various industries, including road construction. At the same time, the requirements for the low-noise equipment production should be applied both to road construction machines manufacturers and to engines manufacturers. Numerous studies of the acoustic characteristics of road construction equipment allow noting that the largest part of increased noise sources is located in the engine compartment. At the same time, the engine and its gas exchange systems emit the most amount of the acoustic energy