Muffler

type
There are many types of mufflers, but the sound elimination mechanism can be divided into six main types, namely resistive muffler, reactive muffler, impedance compound muffler, micro-perforated plate muffler, small hole muffler and active muffler.
structure
According to the space conditions at the bottom of the car, the muffler cover can be processed into a tile shape or rolled into a pot shape. The outer cover of the pot-shaped muffler is formed by using a round mandrel to form the outer cover material and snap it together or install it as a whole by welding, and install the welded parts into the interface. The pot-shaped muffler is composed of an inner pipe, a turning elbow and a middle bottom plate, and then the outer bottom plate is connected to the outer cover through a groove or welding.
When the bottom space of the car is complicated and it is difficult to install a pot-shaped muffler, a deep-drawn tile-shaped muffler can be used. It can be made into almost any form. The total volume of a car muffler is 8-12 times the engine displacement.