CN202108561U

CN202108561U - Exhaust muffler for automobile

Info

Publication number: CN202108561U
Application number: CN2011201882561U
Authority: CN
Inventors: 王小昱
Original assignee: WUWI HONGHU MUFFLER CO Ltd
Current assignee: WUWI HONGHU MUFFLER CO Ltd
Priority date: 2011-06-07
Filing date: 2011-06-07
Publication date: 2012-01-11
Anticipated expiration: 2021-06-07

Abstract

The utility model discloses an exhaust muffler for an automobile. The exhaust muffler comprises a barrel, and an air inlet end cover plate and an air outlet end cover plate which are arranged at the two ends of the barrel, wherein three core tubes are arranged in parallel along the axial direction of the barrel in the barrel; two separation discs are arranged along the axial direction of the barrel in the barrel, and are used for separating the inside of the barrel into three cavities; one end of a third core tube is connected with the air inlet end cover plate, and the other end of the third core tube passes through a first separation disc and a second separation disc in sequence and is arranged correspondingly to the air outlet end cover plate; one end of a second core tube is connected with the air outlet end cover plate, and the other end of the second core tube passes through the second separation disc and the first separation disc in sequence and is arranged correspondingly to the air inlet end cover plate; a first core tube passes through the first separation disc and the second separation disc in sequence; and the two ends of the first core tube are arranged correspondingly to the air inlet end cover plate and the air outlet end cover plate respectively. In the utility model, air current flows into the three core tubes, is collided while flowing in three hermetic cavities in a reciprocating way and is rubbed with a pipe fitting, so that the sound energy and the noise are reduced.

Description

The automobile exhaust silencing apparatus

Technical field

The utility model relates to vehicle, relates in particular to the vent systems of automobile, particularly a kind ofly is used for petrolic exhaust silencer.

Background technique

The effect of automotive muffler is the noise that reduces engine producing, reduces vibration, improves the travelling comfort that automobile uses; The protection environment, the structure of silencing apparatus is in the middle of the silencer cylinder core body pipe to be arranged in the existing technology, core body pipe two ends connect steam outlet pipe and suction tude respectively; Suction tude is connected inlet flange more respectively and gives vent to anger flange with steam outlet pipe, is uniformly distributed with circular hole on the core body pipe, and air communication is crossed circular hole turnover core body pipe; Flow each other, collide and reduce acoustic energy, but the core body pipe is single in the existing technology, the air current flow collisional quenching is little; Thereby cause sound deadening capacity little, low-frequency noise is bigger, influences the travelling comfort of car load.

The model utility content

The utility model purpose is to the defective that existing technology exists a kind of automobile exhaust silencing apparatus to be provided, and is used to reduce vehicle noise and improves vehicle riding comfort.

The utility model adopts following technological scheme for realizing above-mentioned purpose:

The utility model automobile exhaust silencing apparatus; The inlet end cover plate and the outlet side cover plate that comprise cylindrical shell and be arranged at the cylindrical shell two ends; In cylindrical shell along drum shaft to being set up in parallel three core pipes; And to two separated dishes are set barrel is divided into three cavitys along drum shaft in the cylindrical shell, wherein an end of the 3rd core pipe is connected with the inlet end cover plate, and the other end passes first, second successively at a distance from the dish corresponding setting with the outlet side cover plate in back; One end of the second core pipe is connected with the outlet side cover plate, and the other end passes second, first successively at a distance from the dish corresponding setting with the inlet end cover plate in back; The first core pipe pass successively first, second at a distance from the dish, its two ends respectively with inlet end cover plate, the corresponding setting of outlet side cover plate.

Preferably, the 3rd core pipe along the circumferential direction evenly is provided with a plurality of apertures at inlet end cover plate and first on the core pipe between the dish.

Preferably, the 3rd core pipe along the circumferential direction evenly is provided with a plurality of apertures at a distance from dish and second first on the core pipe between the dish.

Preferably, the second core pipe along the circumferential direction evenly is provided with a plurality of apertures at outlet side cover plate and second on the core pipe between the dish.

Preferably, around the said aperture sleeve pipe is set, the cotton of eliminating the noise is set between sleeve pipe and the aperture.

The utility model air-flow flows into three core pipes, and in three Seal cages back and forth in the process of flowing, air-flow bumps against, and produces friction with pipe fitting, attenuating acoustic energy, thereby reducing noise.

Description of drawings

Fig. 1: the utility model structural drawing.

Embodiment

As shown in Figure 1; The automobile exhaust silencing apparatus; The inlet end cover plate 1 and outlet side cover plate 10 that comprise cylindrical shell 2 and be arranged at cylindrical shell 2 two ends axially are set up in parallel three core pipes 3,5,7 along cylindrical shell 2 cylindrical shell 2 in, and axially are provided with two along cylindrical shell 2 in the cylindrical shell 2 and at a distance from coiling 4,6 cylindrical shell 2 inside are divided into three cavitys; Wherein an end of the 3rd core pipe 7 is connected with inlet end cover plate 1, and the other end passes first, second successively at a distance from

dish

4,6 backs and the 10 corresponding settings of outlet side cover plate; One end of the second core pipe 5 is connected with outlet side cover plate 10, and the other end passes second, first successively at a distance from

dish

6,4 backs and the 1 corresponding setting of inlet end cover plate; The first core pipe 3 pass successively first, second at a distance from the

dish

4,6, its two ends respectively with inlet end cover plate 1, the 10 corresponding settings of outlet side cover plate.

The 3rd core pipe 7 along the circumferential direction evenly is provided with a plurality of apertures at inlet end cover plate 1 and first on the core pipe between the dish 4.

The 3rd core pipe 7 along the circumferential direction evenly is provided with a plurality of apertures at a distance from dish 4 and second first on the core pipe between the dish 6.

The second core pipe 5 along the circumferential direction evenly is provided with a plurality of apertures at outlet side cover plate 10 and second on the core pipe between the dish 6.

Around the said aperture sleeve pipe 8 is set, is provided with between sleeve pipe 8 and the aperture and eliminates the noise cotton 9.

The utility model working principle: air inlet is got into by an end of the 3rd core pipe 7; The aperture and the other end through its setting gets into three cavitys respectively; In the airtight cavity of the inlet end cover plate 1 and first separated dish 4 formations; Get into second through the first core pipe 3 and in the cavity that dish 6 and outlet side cover plate 10 constitute and through the second core pipe 5, discharge silencing apparatus; The employing sleeve pipe 8 and the cotton 9 elimination noises of eliminating the noise, the gas that the gas that the cavity of the first separated dish 4 and second between dish 6 is interior and the gas of its other end discharge and the first core pipe 3 are discharged interferes, and has eliminated noise.

Claims

1. automobile exhaust silencing apparatus; The inlet end cover plate (1) and the outlet side cover plate (10) that comprise cylindrical shell (2) and be arranged at cylindrical shell (2) two ends; It is characterized in that in cylindrical shell (2), axially being set up in parallel three core pipes (3,5,7) along cylindrical shell (2); And along cylindrical shell (2) two separated dishes (4,6) are set axially in the cylindrical shell (2) cylindrical shell (2) inside is divided into three cavitys; Wherein an end of the 3rd core pipe (7) is connected with inlet end cover plate (1), and the other end passes first, second successively at a distance from dish (4,6) back and the corresponding setting of outlet side cover plate (10); One end of the second core pipe (5) is connected with outlet side cover plate (10), and the other end passes second, first successively at a distance from dish (6,4) back and the corresponding setting of inlet end cover plate (1); The first core pipe (3) pass successively first, second at a distance from the dish (4,6), its two ends respectively with inlet end cover plate (1), the corresponding setting of outlet side cover plate (10).

2. automobile exhaust silencing apparatus according to claim 1 is characterized in that the 3rd core pipe (7) is positioned at inlet end cover plate (1) and first and on the core pipe between the dish (4), along the circumferential direction evenly is provided with a plurality of apertures.

3. automobile exhaust silencing apparatus according to claim 1 is characterized in that the 3rd core pipe (7) is positioned at first and on the core pipe between the dish (4) and the second separated dish (6), along the circumferential direction evenly is provided with a plurality of apertures.

4. automobile exhaust silencing apparatus according to claim 1 is characterized in that the second core pipe (5) is positioned at outlet side cover plate (10) and second and on the core pipe between the dish (6), along the circumferential direction evenly is provided with a plurality of apertures.

5. automobile exhaust silencing apparatus according to claim 4 is characterized in that around the said aperture sleeve pipe (8) being set, and eliminate the noise cotton (9) are set between sleeve pipe (8) and the aperture.