Performance differences and design selection of mufflers

Tests and compares typical samples of various kinds of mufflers, obtains that there is a great performance difference for different types of mufflers, and also the different structure of the same type of mufflers greatly affects the performance. Proposes a suggestion that selecting muffler should be based on the actual sound deadening capacity and air resistance loss in engineering design, and points out that sampling inspection of mufflers before operation is the necessary approach to prevent excessive noise problems in practical engineering project.