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Automobile exhaust muffler

A technology of automobile exhaust and muffler, which is applied in the direction of exhaust devices, mufflers, machines/engines, etc., which can solve the problems of low strength of the muffler inner tube, fatigue fracture failure of the muffler inner tube, abnormal noise, etc., and achieve a simple structure , enhanced strength, and low manufacturing cost

Active Publication Date: 2019-11-15
DONGFENG LIUZHOU MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is to provide an automobile exhaust muffler, which can solve the problem of low strength of the inner tube of the muffler, and the failure of the inner tube of the muffler due to fatigue fracture caused by long-term vibration transmission, thereby generating abnormal noise

Method used

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  • Automobile exhaust muffler

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with accompanying drawing embodiment:

[0016] like figure 1 The automobile exhaust muffler shown includes a muffler inner tube 2 with a muffler pipe part 2-1, and muffler holes are distributed on the pipe wall of the muffler pipe part 2-1, and a muffler shell is set on the muffler inner tube 2 The body 1, the muffler cotton is installed between the muffler shell 1 and the muffler inner tube 2. The muffler inner tube 2 has a reinforced pipe part 2-2 that divides the silencer pipe part 2-1 into two sections, and the reinforced pipe part 2-2 is equipped with a reinforcing rib 4; the middle part of the reinforced pipe part 2-2 shrinks inward to form a diameter For the constricted part smaller than the diameter of the muffler pipe part, the reinforcing rib 4 is located in the middle of the constricted part and surrounds the outside of the constricted part. The two ends of the muffler shell 1 ar...

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Abstract

The invention discloses an automobile exhaust muffler, and relates to the technical field of automobile manufacturing. The automobile exhaust muffler comprises a muffler inner inserting tube providedwith a muffling tube portion, muffling holes are distributed in the tube wall of the muffling tube portion, the muffler inner inserting tube is sleeved with a muffler housing, and muffling cotton is arranged between the muffler housing and the muffler inner inserting tube; the muffler inner inserting tube is provided with a reinforcing tube portion for dividing the muffling tube portion into two segments, and the reinforcing tube portion is provided with reinforcing ribs. Compared with the prior art, the muffler inner inserting tube is provided with the reinforcing tube portion for dividing the muffling tube portion into the two segments, and the reinforcing tube portion is provided with the reinforcing ribs; the overall strength of the muffler inner inserting tube is improved, and the conditions that common rotating speed frequency coupling happens to the muffler inner inserting tube and an overall automobile, and consequently the muffler inner inserting tube happens fatigue breakingand efficiency losing due to long-term vibration transmission are avoided, and abnormal noise is eliminated.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to an automobile exhaust muffler. Background technique [0002] The main function of the automobile exhaust muffler is to reduce the exhaust noise of the engine and enable the high-temperature exhaust gas to be discharged safely and effectively. The performance of the muffler directly affects the noise inside and outside the vehicle. The currently used automobile exhaust muffler includes a muffler inner tube provided with a muffler pipe part, and muffler holes are distributed on the pipe wall of the muffler pipe part. The inner tube is welded, and the muffler cotton is installed between the muffler shell and the inner tube of the muffler. This kind of automobile exhaust muffler has the following disadvantages during use: the strength of the muffler inner tube is low, the muffler inner tube is coupled with the common speed frequency of the vehicle, and the long-term...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/00F01N13/16
CPCF01N13/00F01N13/16
Inventor 唐竞林长波莫伟树毛德龙许忠杰程志谋胡先锋吴颂
Owner DONGFENG LIUZHOU MOTOR
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