CN201982158U

CN201982158U - Car exhaust muffler

Info

Publication number: CN201982158U
Application number: CN201120069224XU
Authority: CN
Inventors: 黄世国
Original assignee: SAIC Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2011-03-16
Filing date: 2011-03-16
Publication date: 2011-09-21
Anticipated expiration: 2021-03-16

Abstract

The utility model relates to a car exhaust muffler, which mainly comprises a housing (4), a vertical intake pipe (1), a horizontal exhaust pipe (10) and an inner pipe (11), wherein the inner pipe (1) is horizontally arranged inside the housing (4) and positioned between the intake pipe (1) and the exhaust pipe (10). Within the normal work range of an engine, the car exhaust muffler provided by the utility model has the advantages of small exhaust noise, low back pressure and little power penalty, so that the dynamic property, economy, and traveling comfort of the entire car are greatly enhanced; and the manufacturing is easy, the requirements of national laws and regulations are met, the structure is simple, the cost is low, and the practicability is strong.

Description

A kind of automobile exhaust muffler

Technical field

The utility model belongs to the auto parts and components field, relates in particular to a kind of silencing apparatus of automobile exhaust.

Background technique

During general motor car engine combustion gas, the pressure of waste gas exhaust ports change rapidly and and the vibration of tube wall generation friction-produced because vibration produces noise.In present technology, in waste pipe, be provided with silencing apparatus, silencing apparatus be by consuming flowed energy, reduce the pressure surge amplitude of air-flow, can playing the effect that reduces noise.But in the silencing apparatus of existing motor, it is big that air communication is crossed resistance, the exhaust back pressure height, and the engine power loss that causes is big, and the power performance of automobile is descended.

The silencing apparatus that uses on the general engine vehicle all be air-flow and noise to pass through the path consistent, that is to say how air-flow flows away by silencing apparatus, noise also passes by this path, will occur in this case wanting to make noise attentuation big, must increase the noise transfer approach, air-flow is through out-of-date like this, the path increases will increase the pressure loss, back pressure is increased, power loss increases, vehicle dynamic quality, Economy descends, and visible this method cannot realize automotive performance and NVH(Noise, Vibration, Harshness) the dual of technology taken into account.

Summary of the invention

The utility model has designed a kind of automobile exhaust muffler, has solved in the prior art in the silencing apparatus of motor air communication and has crossed the technical problem that resistance is big, noise is big, exhaust back pressure is high, engine power loss is big.

In order to solve the technical problem of above-mentioned existence, the utility model has adopted following scheme:

A kind of automobile exhaust muffler mainly is made up of housing, vertically disposed suction tude, horizontally disposed outlet pipe and interior pipe, the inside that is arranged on described housing of described interior pipe level, and described interior pipe is between described suction tude and outlet pipe.

Further, described housing comprises left side wall, right side wall, upper wall, lower wall, first dividing plate, second partition and the 3rd dividing plate; Described second partition and the 3rd dividing plate are parallel to described right side wall setting, and described housing is divided into three parts; First dividing plate is arranged between left side wall and the second partition and perpendicular to described second partition; The cavity that forms between described first dividing plate, second partition and the upper wall is first cavity, the cavity that forms between described first dividing plate, second partition and the lower wall is second cavity, the cavity that forms between described second partition, the 3rd dividing plate, upper wall and the lower wall is the 3rd cavity, and the cavity that forms between described the 3rd dividing plate, right side wall, upper wall and the lower wall is the 4th cavity.

Further, described suction tude is passed described upper wall and described first dividing plate extraneous air-flow is directly introduced second cavity; Described outlet pipe pass the 3rd dividing plate and right side wall gas in each cavity is discharged extraneous, described in pipe be arranged between second cavity and the 4th cavity, pass described second partition and described the 3rd dividing plate is communicated with second cavity and the 4th cavity.

Further, described suction tude, outlet pipe and interior pipe are perforated pipe, and noise enters each cavity by the perforation on the tube wall;

Further, the two ends bore of described suction tude and described outlet pipe is identical, and described interior pipe is the reducing pipe, and its caliber that is arranged on the 4th inside cavity branch is arranged on the caliber that second inside cavity is divided less than it.

Further, twine on described suction tude, outlet pipe and the interior pipe and be provided with glass fiber, also be filled with glass fiber in described first cavity, all be used to reduce noise.

Further, described first dividing plate, second partition and the 3rd dividing plate are perforated plate, and noise enters in each cavity by the perforation on the dividing plate.

This automobile exhaust muffler has following beneficial effect:

(1) automobile exhaust muffler of the utility model design is in the motor normal range of operation, and exhaust sound is little, and back pressure is low, and power loss is little.

(2) automobile exhaust muffler of the utility model design makes car load power character, Economy, travelling comfort promote significantly.

(3) Design of Automotive Exhaust Muffler of the utility model design is rationally simple, is easy to processing, guarantees the cruising of automobile, satisfies the national legislation requirement, and simple in structure, with low cost, practical.

Description of drawings

Fig. 1: be the utility model automobile exhaust muffler plan structure figure.

Description of reference numerals:

1-suction tude; 2-the first cavity; 3-the first dividing plate; 4-housing; 5-the second cavity; 6-second partition; 7-the three cavity; 8-the three dividing plate; 9-the four cavity; 10-outlet pipe; 11-interior pipe; 21-left side wall; 22-right side wall; 23-upper wall; 24-lower wall.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described further:

As shown in Figure 1, the disclosed automobile exhaust muffler of the utility model mainly is made up of housing 4, vertically disposed suction tude 1, horizontally disposed outlet pipe 10 and interior pipe 11; The inside that is arranged on described housing 4 of interior pipe 11 levels, interior pipe 11 is between described suction tude 1 and outlet pipe 10.Housing 4 comprises left side wall 21, right side wall 22, upper wall 23, lower wall, 24 first dividing plates 3, second partition 6 and the 3rd dividing plate 8; Second partition 6 and the 3rd dividing plate 8 are parallel to right side wall 22 and are provided with, and housing 4 is divided into three parts; First dividing plate 3 is arranged between left side wall 21 and the second partition 6 and perpendicular to second partition 6; The cavity that forms between first dividing plate 3, second partition 6 and the upper wall 23 is first cavity 2, the cavity that forms between first dividing plate 3, second partition 6 and the lower wall 24 is second cavity 5, the cavity that forms between second partition 6, the 3rd dividing plate 8, upper wall 23 and the lower wall 24 is that the cavity that forms between the 3rd cavity 7, the three dividing plates 8, right side wall 22, upper wall 23 and the lower wall 24 is the 4th cavity 9.

Suction tude 1 passes upper wall 23 and first dividing plate 3 is directly introduced second cavity 5 with extraneous air-flow; Outlet pipe 10 passes the 3rd dividing plate 8 and right side wall 24 is discharged the external world with gas in each cavity, and interior pipe 11 is arranged between second cavity 5 and the 4th cavity 9, passes second partition 6 and the 3rd dividing plate 8 connection second cavity 5 and the 4th cavitys 9.Suction tude 1, outlet pipe 10 and interior pipe 11 are perforated pipe, and noise enters each cavity from the perforation on the tube wall; The two ends bore of suction tude 1 and outlet pipe 10 is identical, and interior pipe 11 is the reducing pipe, and its caliber that is arranged on part in the 4th cavity 9 is arranged on the caliber of part in second cavity 5 less than it.Twine on suction tude 1, outlet pipe 10 and the interior pipe 11 and be provided with glass fiber, also be filled with glass fiber in first cavity 2, all be used to reduce noise.First dividing plate 3, second partition 6 and the 3rd dividing plate 8 are perforated plate, and noise enters in each cavity by the perforation on the dividing plate.

The direction of arrow is airflow direction as shown in the figure, and extraneous air-flow enters and can directly enter second cavity 5 along suction tude 1, because first cavity, 2 inner filled glass fiber silks, air-flow does not enter first cavity 2 substantially.Most of then air-flow is selected through the less path of excess pressure, enter the 3rd cavity 7 by interior pipe 11, the part air-flow enters the 3rd cavity 7 through second partition 6, because air-flow meeting selection pressure is little, the path flows that the path is short is so have only very a spot of air-flow to enter the 4th cavity 9.Air-flow in the 3rd cavity 7 is discharged the silencing apparatus outside directly by outlet pipe 10.Thereby from the path of whole air-flow, obviously lacked much than the path of other silencing apparatuss, power loss is very little.

Noise enters silencing apparatus along suction tude 1, and partial noise enters in first cavity 2 by the perforation on the suction tude 1, and the glass fiber that is filled in first cavity has increased friction, has weakened noise; Noise further enters in the 3rd cavity 7 through the perforation of second partition 6, and partial noise directly enters second cavity 5, further weakens noise in two sub-sections; Enter the 3rd cavity 7 through interior pipe 11 parts then, part enters the perforation by the 3rd dividing plate 8 of partial noise in the 4th cavity 9, the four cavitys 9 and enters in the 3rd cavity 7, after outlet pipe 10 is rejected to whole silencing apparatus outside.From the bang path of whole noise, obviously much longer than the path of air-flow, the noise energy loss increases, and noise is repeatedly cut down in the process of transmitting, and the silencing apparatus noise of process the utility model design reduces greatly.

In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obvious realization of the present utility model is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present utility model and technological scheme to carry out; or design of the present utility model and technological scheme are directly applied to other occasion without improving, all in protection domain of the present utility model.

Claims

1. automobile exhaust muffler, mainly form by housing (4), vertically disposed suction tude (1), horizontally disposed outlet pipe (10) and interior pipe (11), it is characterized in that: the inside that is arranged on described housing (4) of pipe (11) level in described, described interior pipe (11) is positioned between described suction tude (1) and the outlet pipe (10).

2. according to the described automobile exhaust muffler of claim 1, it is characterized in that: described housing (4) comprises left side wall (21), right side wall (22), upper wall (23), lower wall (24) first dividing plates (3), second partition (6) and the 3rd dividing plate (8); Described second partition (6) and the 3rd dividing plate (8) are parallel to described right side wall (22) setting, and described housing (4) is divided into three parts; First dividing plate (3) is arranged between left side wall (21) and the second partition (6) and perpendicular to described second partition (6); The cavity that forms between described first dividing plate (3), second partition (6) and the upper wall (23) is first cavity (2), the cavity that forms between described first dividing plate (3), second partition (6) and the lower wall (24) is second cavity (5), the cavity that forms between described second partition (6), the 3rd dividing plate (8), upper wall (23) and the lower wall (24) is the 3rd cavity (7), and the cavity that forms between described the 3rd dividing plate (8), right side wall (22), upper wall (23) and the lower wall (24) is the 4th cavity (9).

3. according to the described automobile exhaust muffler of claim 2, it is characterized in that: described suction tude (1) passes described upper wall (23) and described first dividing plate (3) is directly introduced second cavity (5) with extraneous air-flow; Described outlet pipe (10) passes the 3rd dividing plate (8) and right side wall (24) is discharged gas in each cavity extraneous, pipe (11) is arranged between second cavity (5) and the 4th cavity (9) in described, passes described second partition (6) and described the 3rd dividing plate (8) and is communicated with second cavity (5) and the 4th cavity (9).

4. according to the described automobile exhaust muffler of claim 3, it is characterized in that: described suction tude (1), outlet pipe (10) and interior pipe (11) are perforated pipe, and noise enters each cavity by the perforation on the tube wall.

5. according to claim 2,3 or 4 described automobile exhaust mufflers, it is characterized in that: described suction tude (1) is identical with the two ends bore of described outlet pipe (10), pipe (11) is the reducing pipe in described, and its caliber that is arranged on part in the 4th cavity (9) is arranged on the caliber of part in second cavity (5) less than it.

6. according to the described automobile exhaust muffler of claim 5, it is characterized in that: described suction tude (1), outlet pipe (10) and interior pipe (11) are gone up to twine and are provided with glass fiber, also be filled with glass fiber in described first cavity (2), all be used for buffering and reduce noise.

7. according to the described automobile exhaust muffler of claim 6, it is characterized in that: described first dividing plate (3), second partition (6) and the 3rd dividing plate (8) are perforated plate, and noise enters in each cavity by the perforation on the dividing plate.