Gas exhausting system and pre-muffler thereof

Abstract

The invention discloses a pre-muffler. The pre-muffler comprises an outer tube, and a core tube which is provided with muffling holes, wherein the muffling holes are arranged to form a plurality of first muffling hole circles which are arranged at equal intervals in the core tube. The pre-muffler further comprises a second muffling hole circle which is arranged between any two adjacent first muffling hole circles; the muffling holes of the second muffling hole circles are as many as those of the first muffling hole circles; the muffling holes of each second muffling hole circle and each first muffling hole circle which are adjacently arranged are staggered. According to the pre-muffler, the muffling holes formed in the core tube have the same quantity, and the quantity is nearly doubled; meanwhile, the axially-adjacent muffling holes are staggered, so that the muffling effect can be obviously improved by being compared with that of an original pre-muffler, and passengers in an automobile can feel comfortable, and as a result, the performances of the whole automobile can be improved. The invention further provides a gas exhausting system comprising the aforementioned pre-muffler.

Description

technical field [0001] The invention relates to the technical field of vehicle accessories, in particular to a front muffler, and also relates to an exhaust system with the above-mentioned front muffler. Background technique [0002] The exhaust gas produced by the car engine needs to be discharged out of the car through the exhaust system. The exhaust system mainly includes the front muffler, the rear muffler and the exhaust pipe. [0003] In the existing technology, such as figure 1 As shown, the front muffler is a resistant muffler composed of an outer tube 01 and a core tube 02 sheathed in the outer tube 01 , and a plurality of muffler holes 03 are opened on the core tube 02 . All the muffler holes 03 are evenly distributed on the core tube 02. The specific distribution method is as follows: first, a part of the muffler holes 03 are arranged to form a circle around the axis of the core tube 02 on the peripheral wall of the core tube 02, and then A plurality of identica...

AI Technical Summary

Problems solved by technology

However, the inventors have found that the front muffler of this structure has an unsatisfactory noise reduction effect, and the exhaust noise of the exhaust gas is still relatively large, which seriously affects the performance of the car and reduces the ride comfort.

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