Abstract
To reduce the exhaust noise of internal combustion engines, exhaust silencer containing chamber cells are widely used. Cell design largely determines its acoustic efficiency as a function of frequency. Therefore, in this work, a theoretical study of the most frequently used chamber noise-suppressing cells of various designs is carried out. Designs with high acoustic efficiency in a wide frequency range have been determined. The results of the study will allow the designer, using these structures, to synthesize highly efficient ICE exhaust silencers.
Highlights
The most powerful source of vehicle noise is its exhaust system
The matrix method is successfully used, which allows theoretically to accurately predict the acoustic efficiency of a silencer during its design without carrying out a large amount of experimental research [1 - 9]. This method is used in this work to determine the acoustic efficiency of the most used design variants of the chamber cell
Chamber cell 1 is a cylindrical chamber with inlet and outlet pipelines of the same flow section connected to it from the outside
Summary
A properly designed exhaust silencer provides a significant reduction in overall vehicle noise. To reduce the noise of vehicles, reactive silencers are most often used, in the design of which chamber noise-suppressing cells are widely used. The matrix method is successfully used, which allows theoretically to accurately predict the acoustic efficiency of a silencer during its design without carrying out a large amount of experimental research [1 - 9]. This method is used in this work to determine the acoustic efficiency of the most used design variants of the chamber cell
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