Structural design and testing study of truck muffler

This article introduces the performance evaluation method of automobile's exhaust muffler and its the size parameter to the noise elimination effect influence. It presents a two chambers impedance compound exhaust muffler designment's method based on a boundary element method, which focuses on the truck's diesel engine. Test shows that the truck exhaust muffler has a good effect with insertion loss of 22.7dB, and by the boundary element method we calculate transmission loss under the static condition. Both are consistent.