CN220929511U - Automobile exhaust muffler and automobile - Google Patents

Abstract

The application provides an automobile exhaust muffler and an automobile, wherein the automobile exhaust muffler comprises a front muffler component and a rear muffler component, and the front muffler component comprises a front muffler arranged along the longitudinal direction of an automobile body; the rear muffler assembly comprises a rear muffler arranged transversely along the vehicle body, the rear muffler is positioned behind the front muffler, and an air inlet of the rear muffler is communicated with an air outlet of the front muffler. The automobile exhaust muffler and the automobile adopt a combined arrangement mode of arranging the front muffler and the rear muffler front and back, the front muffler is longitudinally arranged, the channel space in the floor of the automobile body can be fully utilized, the rear muffler is transversely arranged, the rear space of the automobile body can be fully utilized, the volumes of the front muffler and the rear muffler can be increased on the premise of not occupying the automobile body additionally, the sound attenuation quantity is improved, and then the low-frequency noise of the hybrid electric automobile is reduced or eliminated.

Description

Automobile exhaust muffler and automobile

Technical Field

The application relates to the technical field of vehicles, in particular to an automobile exhaust muffler and an automobile.

Background

At present, the driving force of the whole automobile of the traditional fuel oil automobile is provided by an engine, and the exhaust noise is mainly in medium-high frequency. The hybrid electric vehicle is driven by an engine and a motor, and exhaust noise thereof is mainly distributed at a low level. The problem of low frequency noise in hybrid vehicles is particularly pronounced compared to conventional fuel vehicles.

Disclosure of utility model

The application provides an automobile exhaust muffler and an automobile, which aim to solve the problem of high low-frequency noise of a hybrid electric vehicle.

In a first aspect, the present application provides an automotive exhaust muffler comprising: a front muffler assembly including a front muffler arranged in a longitudinal direction of a vehicle body; and a rear muffler assembly including a rear muffler arranged in a lateral direction of the vehicle body, the rear muffler being located behind the front muffler, and an air inlet of the rear muffler being communicated with an air outlet of the front muffler.

In some embodiments, the front muffler is perpendicular to the rear muffler, and the front muffler faces toward a middle position of the rear muffler in a lateral direction.

In some embodiments, the pre-muffler assembly includes a first connection pipe, the post-muffler assembly includes a second connection pipe, one end of the first connection pipe is communicated with the air outlet of the pre-muffler, the other end of the first connection pipe is connected with one end of the second connection pipe through a flange, and the other end of the second connection pipe is communicated with the air inlet of the post-muffler.

In some embodiments, the pre-muffler assembly further comprises a first front hook disposed at a first location of the pre-muffler, a second front hook disposed at a second location of the pre-muffler, and a third front hook disposed at a third location of the first connection tube, wherein the first location, the second location, and the third location are non-collinear; and/or the rear muffler assembly further comprises a first rear hook arranged at a fourth position of the rear muffler, a second rear hook arranged at a fifth position of the rear muffler, and a third rear hook arranged at a sixth position of the second connecting pipe, wherein the fourth position, the fifth position and the sixth position are non-collinear.

In some embodiments, the first position and the second position are respectively located at two lateral sides of the pre-muffler, and the connecting lines of the first position, the second position and the third position form a triangle; and/or the fourth position and the fifth position are respectively positioned at two lateral sides of the rear muffler, and connecting lines of the fourth position, the fifth position and the sixth position form a triangle.

In some embodiments, the pre-muffler includes: a front muffler shell having a first front muffler chamber, a second front muffler chamber, and a third front muffler chamber; the front inner pipe is arranged in the front silencing shell in a penetrating mode, the front inner pipe is provided with a plurality of tuning holes and a plurality of air outlet holes, the tuning holes are located in the first front silencing cavity, the air outlet holes are located in the third front silencing cavity, silencing cotton is arranged in the third front silencing cavity, one end of the front inner pipe is communicated with an air inlet of the front silencer, and the other end of the front inner pipe is communicated with an air outlet of the front silencer; and the tuning pipe penetrates through the pre-silencing shell, the inlet end of the tuning pipe is communicated with the first pre-silencing cavity, and the outlet end of the tuning pipe is communicated with the second pre-silencing cavity.

In some embodiments, the rear muffler includes: the rear muffler shell comprises a first rear muffler cavity, a second rear muffler cavity and a third rear muffler cavity; the air inlet pipe penetrates through the rear silencing shell, one end of the air inlet pipe is communicated with an air inlet of the rear silencer, and the other end of the air inlet pipe is communicated with the second rear silencing cavity; the reducer comprises an air outlet pipe and a branch pipe communicated with the air outlet pipe, the cross section area of the branch pipe is smaller than that of the air outlet pipe, the air outlet pipe penetrates through the rear silencing shell, the air outlet end of the air outlet pipe is communicated with the air outlet of the rear silencer, the air inlet end of the air outlet pipe and the air inlet end of the branch pipe are both communicated with the third rear silencing cavity, and the air inlet end of the air outlet pipe is communicated with the second rear silencing cavity; and the valve is rotatably arranged at the air inlet end of the air outlet pipe and is used for opening or closing the air inlet end of the air outlet pipe based on the air flow.

In some embodiments, the rear muffler includes a rear inner tube that is disposed through the rear muffler shell, and an inlet end of the rear inner tube communicates with the first rear muffler chamber, an outlet end of the rear inner tube communicates with the third rear muffler chamber, and the first rear muffler chamber communicates with the second rear muffler chamber.

In some embodiments, the air outlet pipe sleeve is provided with a sleeve, and noise elimination cotton is arranged between the sleeve and the air outlet pipe, and the sleeve is positioned in the first rear noise elimination cavity.

In a second aspect, the present application also provides an automobile comprising: a vehicle body including a floor; the automotive exhaust muffler of any of the above embodiments, wherein the front muffler is disposed longitudinally in front of the floor and the rear muffler is disposed transversely in rear of the floor.

The technical scheme of the application has the following technical effects:

The automobile exhaust muffler and the automobile adopt a combined arrangement mode of arranging the front muffler and the rear muffler front and back, the front muffler is longitudinally arranged, the channel space in the floor of the automobile body can be fully utilized, the rear muffler is transversely arranged, the rear space of the automobile body can be fully utilized, the volumes of the front muffler and the rear muffler can be increased on the premise of not occupying the automobile body additionally, the sound attenuation quantity is improved, and then the low-frequency noise of the hybrid electric automobile is reduced or eliminated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an automotive exhaust muffler according to some embodiments of the present application;

FIG. 2 is a schematic view of a pre-muffler assembly provided in some embodiments of the present application;

FIG. 3 is a schematic view of a rear muffler assembly provided in some embodiments of the present application;

FIG. 4 is a schematic view of a pre-muffler provided in some embodiments of the present application;

FIG. 5 is a schematic view of a rear muffler provided in some embodiments of the present application;

FIG. 6 is a partial schematic view of a rear muffler provided in some embodiments of the present application;

FIG. 7 is a schematic diagram of the flow direction of the air flow when the valve of the rear muffler is closed according to some embodiments of the present application;

fig. 8 is a schematic diagram of airflow direction when a valve of a rear muffler is opened according to some embodiments of the present application.

Reference numerals:

An automobile exhaust muffler 100;

A pre-muffler assembly 10; a front muffler 11; a front muffler shell 111; a first pre-muffler chamber 111a; a second pre-anechoic chamber 111b; a third pre-anechoic chamber 111c; a front inner tube 112; a tuning hole 1121; an air outlet hole 1122; a tuning tube 113; an air inlet 11a of the pre-muffler; an air outlet 11b of the pre-muffler; a first connection pipe 12; a first front hook 131; a second front hook 132; a third front hook 133;

A rear muffler assembly 20; a rear muffler 21; a rear muffler shell 211; a first separator 2113 and a second separator 2114; an intake pipe 212; a reducer 213; an outlet pipe 2131; a branch pipe 2132; a valve 214; a rear inner tube 215; a rear muffler shell 211; a first rear muffler chamber 211a; a second rear muffler chamber 211b; a third rear muffler chamber 211c; an air inlet 21a of the rear muffler; an exhaust port 21b; a second connection pipe 22; a first rear hook 231; a second rear hook 232; a third rear hook 233; a valve 214; a sleeve 216;

Silencing cotton A; a first position W1; a second position W2; a third position W3; a fourth position W4; a fifth position W5; and a sixth position W6.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present application, it should be noted that, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship conventionally put in place when the product of this application is used, or the orientation or positional relationship conventionally understood by those skilled in the art, is merely for convenience of describing the present application and simplifying the description, and is not indicative or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

At present, the driving force of a traditional fuel automobile is provided by an engine, and exhaust noise is mainly at medium and high frequencies. The driving force of the hybrid vehicle is provided by an engine and a motor, and exhaust noise is mainly low and medium frequency. The hybrid electric vehicle has an idle speed charging working condition, and when the idle speed charging working condition is adopted, the engine load is larger than that of a traditional fuel oil vehicle, the hybrid electric vehicle has a relatively serious idle speed charging low-frequency bombing problem, and compared with the traditional fuel oil vehicle, the low-frequency noise problem of the hybrid electric vehicle is particularly outstanding.

By increasing the sound damping volume of the exhaust muffler, it is desirable to reduce or eliminate the problem of low frequency noise prominence in a hybrid vehicle. However, due to the limitation of the whole vehicle space structure, the muffler arrangement space is limited, and the capacity of the muffler is difficult to increase.

In view of the above, the application provides an automobile exhaust muffler, which can increase the volume of the muffler, improve the sound attenuation amount and further reduce or eliminate the low-frequency noise of a hybrid electric vehicle on the premise of not occupying the whole automobile space additionally.

Referring to fig. 1, an automobile exhaust muffler 100 includes: a front muffler assembly 10 and a rear muffler assembly 20.

The front muffler assembly 10 includes a front muffler 11 arranged in the longitudinal direction of the vehicle body. The rear muffler assembly 20 includes a rear muffler 21 arranged in the vehicle body lateral direction, the rear muffler 21 being located rearward of the front muffler 11, and an air inlet 21a of the rear muffler 21 communicating with an air outlet 11b of the front muffler 11.

The longitudinal direction of the vehicle body means the longitudinal direction of the vehicle body, and is also the front-rear direction of the vehicle body. The vehicle transverse direction is the width direction of the vehicle body, and is also the left-right direction of the vehicle body. The front muffler 11 is arranged in the longitudinal direction of the vehicle body, which means that the longitudinal direction of the front muffler 11 substantially coincides with the longitudinal direction of the vehicle body when the front muffler 11 is mounted on the floor of the vehicle body. The rear muffler 21 is arranged in the vehicle body lateral direction, which means that the longitudinal direction thereof substantially coincides with the width direction of the vehicle body when the rear muffler 21 is mounted on the vehicle body floor.

The automobile exhaust muffler adopts a combined arrangement mode of arranging the front muffler and the rear muffler front and back, the front muffler adopts longitudinal arrangement, the channel space in the floor of the automobile body can be fully utilized, the rear muffler adopts transverse arrangement, the rear space of the automobile body can be fully utilized, the volumes of the front muffler 11 and the rear muffler 21 can be increased on the premise of not occupying the automobile body additionally, the sound attenuation amount is improved, and then the low-frequency noise of the hybrid automobile is reduced or eliminated.

In some embodiments, the front muffler 11 is perpendicular to the rear muffler 21, and the front muffler 11 faces toward a middle position of the rear muffler 21 in the lateral direction.

The middle position of the front muffler 11 towards the rear muffler 21 in the transverse direction means that the extension line of the front muffler 11 in the longitudinal direction passes through the approximately middle position of the muffler 21 in the transverse direction, and the arrangement mode of the front muffler 11 and the rear muffler 21 approximately shows a T-shaped symmetrical structure, so that the weights of the front muffler 11 and the rear muffler 21 are uniformly and symmetrically distributed on the floor of the vehicle body, the whole stress of the exhaust muffler 100 is more uniform, the mode shape of the whole structure is reduced, and the durability of each part of the exhaust muffler 100 is improved.

In some embodiments, referring to fig. 1, 2 and 3, the pre-muffler assembly 10 includes a first connection pipe 12, and the post-muffler assembly 20 includes a second connection pipe 22, one end of the first connection pipe 12 communicates with the air outlet 11b of the pre-muffler 11, the other end of the first connection pipe 12 communicates with one end of the second connection pipe 22 through a flange, and the other end of the second connection pipe 22 communicates with the air inlet 21a of the post-muffler 21.

Since the front muffler 11 is distributed at the front of the floor, the rear muffler 21 is distributed at the rear of the floor with a certain interval therebetween. The front muffler 11 and the rear muffler 21 are communicated through the detachable first connecting pipe 12 and the detachable second connecting pipe 22, so that the installation and the detachment are convenient.

In some embodiments, referring to fig. 1, pre-muffler assembly 10 further includes a first front hook 131 disposed at a first position W1 of pre-muffler 11, a second front hook 132 disposed at a second position W2 of pre-muffler 11, and a third front hook 133 disposed at a third position W3 on first connecting tube 12, wherein first position W1, second position W2, and third position W3 are non-collinear. And/or, the rear muffler assembly 20 further includes a first rear hook 231 disposed at a fourth position W4 of the rear muffler 21, a second rear hook 232 disposed at a fifth position W5 of the rear muffler 21, and a third rear hook 233 disposed at a sixth position W6 of the second connection pipe 22, wherein the fourth position W4, the fifth position W5, and the sixth position W6 are non-collinear.

The non-collinear means that the first position W1, the second position W2 and the third position W3 are distributed at different positions and are not on the same straight line. The fourth position W4, the fifth position W5 and the sixth position W6 are distributed at different positions and are not on the same straight line.

According to the application, by utilizing the principle of fixing a plane at three points, the front silencer assembly 10 and the rear silencer assembly 20 are respectively designed into three hanging hook hanging points which are not on the same straight line, so that a stable support can be formed for the front silencer 11 and the rear silencer 21, the swing of the exhaust silencer 100 can be effectively restrained, and meanwhile, the vibration of the exhaust silencer 100 is reduced, so that the vibration of a vehicle body caused by transmitting to the vehicle body is reduced.

Further, the first position W1 and the second position W2 are located at two lateral sides of the pre-muffler 11, respectively, and the connection lines of the first position W1, the second position W2 and the third position W3 form a triangle. And/or the fourth position W4 and the fifth position W5 are located on both lateral sides of the rear muffler 21, respectively, and the lines of the fourth position W4, the fifth position W5 and the sixth position W6 constitute a triangle. Thereby forming a stable triangular support fixing structure for the front muffler 11 and the rear muffler 21, respectively, further effectively suppressing the swing of the exhaust muffler 100, and reducing the vibration.

In some embodiments, referring to fig. 4, the pre-muffler 11 includes a pre-muffler shell 111, a front inner pipe 112, and a tuning pipe 113.

The pre-muffler shell 111 has a first pre-muffler chamber 111a, a second pre-muffler chamber 111b, and a third pre-muffler chamber 111c.

The front inner tube 112 is arranged in the front silencing shell 111 in a penetrating way, the front inner tube 112 is provided with a plurality of tuning holes 1121 and a plurality of air outlet holes 1122, the tuning holes are positioned in the first front silencing cavity 111a, the air outlet holes 1122 are positioned in the third front silencing cavity 111c, and silencing cotton A is arranged in the third front silencing cavity 111 c. One end of the front inner pipe 112 communicates with the air inlet 11a of the front muffler 11, and the other end of the front inner pipe 112 communicates with the air outlet 11b of the front muffler 11.

The tuning tube 113 is arranged in the pre-silencing shell 11 in a penetrating way, the inlet end of the tuning tube 113 is communicated with the first pre-silencing cavity 111a, and the outlet end of the tuning tube 113 is communicated with the second pre-silencing cavity 11 b. Illustratively, the inlet end of the tuning tube 113 is located in the first pre-anechoic chamber 111a and the outlet end of the tuning tube 113 is located in the second pre-anechoic chamber 11 b.

One end of the front inner pipe 112 is communicated with the air inlet 11a of the front muffler 11, and the front muffler shell 111 is provided with the air inlet 11a, one end of the front inner pipe 112 is communicated with the air inlet 11a, and is communicated with the engine exhaust end of the hybrid electric vehicle through the air inlet 11 a; alternatively, the front muffler shell 111 may be provided with an air inlet 11a, and one end of the front inner pipe 112 may pass through the air inlet 11a and communicate with the engine exhaust end of the hybrid vehicle.

Similarly, the other end of the front inner pipe 112 is communicated with the air outlet 11b of the front muffler 11, and the front muffler shell 111 is provided with the air outlet 11b, and the other end of the front inner pipe 112 is communicated with the air outlet 11b and is communicated with the air inlet of the rear muffler 21 through the air outlet 11 b; alternatively, the front muffler shell 111 may be provided with an air outlet 11b, and the other end of the front inner pipe 112 may be connected to the air inlet of the rear muffler 21 through the air outlet 11 b.

The gas exhausted from the hybrid vehicle enters the front inner pipe 112 from the gas inlet 11a of the front muffler 11, a part of the gas in the front inner pipe 112 enters the first front muffling chamber 111a through the plurality of tuning holes 1121, the gas entering the first front muffling chamber 111a flows from the inlet end of the tuning pipe 113 to the outlet end of the tuning pipe 113, and finally enters the second front muffling chamber 11b, so that the first front muffling chamber 111a and the second front muffling chamber 111b form a resonance expansion muffling chamber to eliminate middle and low frequency noise. Another portion of the gas in the front inner tube 112 enters the third pre-muffling chamber 111c from the plurality of gas outlet holes 1122, and resistive muffling is formed by the muffling cotton a in the third pre-muffling chamber 111c for eliminating high frequency noise.

Wherein, adjusting the quantity of tuning holes 1121 can adjust acoustic property and noise elimination frequency, and when tuning holes quantity is few, first pre-noise elimination chamber 111a is resonance noise elimination chamber, has better noise elimination effect to low frequency noise. When the number of tuning holes 1121 increases, the first pre-noise damping chamber 111a is excessively displaced from the resonance chamber to the expansion chamber, and the expansion chamber has a better noise damping effect on the intermediate frequency noise. The second front sound-damping cavity 11b is of a resonant cavity structure and is used for eliminating low-frequency noise, the tuning pipe 113 is designed in the second front sound-damping cavity 11b, and the sound-damping frequency can be adjusted by adjusting the length of the tuning pipe 113.

The automobile exhaust muffler 100 of the present application has the advantage that the front muffler 11 is a composite muffler, which can eliminate low-frequency noise and medium-frequency noise, and has a high-frequency noise elimination effect.

Specifically, the front muffler 11 adopts a two-partition three-chamber structure. Two partitions are provided in the front muffler shell 111, and divide the inner space of the front muffler shell 111 into a first front muffler chamber 111a, a second front muffler chamber 111b, and a third front muffler chamber 111c. The front inner pipe 112 passes through the first pre-muffling chamber 111a, the second pre-muffling chamber 111b, and the third pre-muffling chamber 111c in this order.

In some embodiments, referring to fig. 5 to 8, the rear muffler 21 includes a rear muffler shell 211, an intake pipe 212, a reducer 213, a valve 214, and a rear inner pipe 215.

The rear muffler shell 211 includes a first rear muffler chamber 211a, a second rear muffler chamber 211b, and a third rear muffler chamber 211c. Illustratively, a first partition 2113 and a second partition 2114 are provided inside the rear muffler shell 211, the first partition 2113 and the second partition 2114 dividing the inner space of the rear muffler shell 211 into a first rear muffler chamber 211a, a second rear muffler chamber 211b and a third rear muffler chamber 211c.

The air inlet pipe 212 penetrates through the rear muffler shell 211, one end of the air inlet pipe 212 is communicated with the air inlet 21a of the rear muffler, and the other end of the air inlet pipe 212 is communicated with the second rear muffler cavity 211 b.

The reducer 213 includes an outlet pipe 2131 and a branch pipe 2132 communicating with the outlet pipe 2131, the cross-sectional area of the branch pipe 2132 being smaller than the cross-sectional area of the outlet pipe 2131.

The air outlet pipe 2131 is arranged in the rear muffler shell 211 in a penetrating way, an air outlet end 2131b of the air outlet pipe 2131 is communicated with an air outlet 21b of the rear muffler 21, and an air inlet end 2131a of the air outlet pipe 2131 and an air inlet end 2132a of the branch pipe 2132 are both communicated with the third rear muffler cavity 211 c. Illustratively, the outlet pipe 2131 extends through the first and second baffles 2113, 2114, with the inlet end 2132a extending into the third rear muffler chamber 211c and the outlet pipe 2131 being positioned at the outlet 21 b.

The inlet end 2131a of the outlet pipe 2131 communicates with the second rear muffler chamber 211 b. Specifically, the rear inner tube 215 is disposed through the rear muffler shell 211, and the air inlet end 215a of the rear inner tube 215 communicates with the first rear muffler chamber 211a, and the air outlet end 215b of the rear inner tube 215 communicates with the third rear muffler chamber 211 c. Illustratively, the rear inner tube 215 passes through the first and second baffles 2113 and 2114, the inlet end 215a extends into the first rear muffling chamber 211a, and the outlet end 215b extends into the third rear muffling chamber 211 c.

The first rear muffler chamber 211a communicates with the second rear muffler chamber 211 b. Illustratively, an airflow hole is provided in the first baffle 2113 through which the first rear muffler chamber 211a communicates with the second rear muffler chamber 211 b.

The valve 214 is rotatably disposed at the air inlet end 2131a of the air outlet pipe 2131 for opening or closing the air inlet end 2131a of the air outlet pipe 2131 based on the magnitude of the air flow. For example, when the air flow reaches a set value, the air flow pushes the valve 214 to rotate in the air outlet pipe 2131 to open the air inlet end 2131a, and when the air flow is equal to the set value, the valve 214 resumes to close the air inlet end 2131a.

Referring to fig. 7, when the hybrid vehicle engine is idling or running at a low speed, since the exhaust gas flow is small, it is insufficient to push the valve 214 open, and at this time the valve 214 is in a closed state, the gas flow subjected to preliminary muffling by the pre-muffler 11 enters the second rear muffling chamber 211b from the gas inlet pipe 212, enters the first rear muffling chamber 211a through the gas flow hole of the first partition 2113, then flows into the third rear muffling chamber 211c through the rear inner pipe 215, and, since the valve 214 is in a closed state, the gas flow cannot enter the gas outlet pipe 2131, but enters the branch pipe 2131 and finally flows out from the gas outlet 21b of the rear muffler 21. Because the pipe diameter of the branch pipe 2131 is smaller, the airflow flow section is correspondingly smaller, the expansion of the rear muffler 21 is larger, the silencing amount of the rear muffler 21 is larger, and the muffler has a good silencing effect on middle-low frequency booming noise under the idle speed charging working condition of the hybrid electric vehicle.

Referring to fig. 8, when the hybrid vehicle engine is running at high speed, the exhaust air flow is large, the valve 213 is pushed open by the air flow, and most of the air flow flows out of the air outlet pipe 2131. The engine is sensitive to the increase of exhaust back pressure at high speed, and the cross section area of the air outlet pipe 2131 is larger than that of the branch pipe 2132, so that the flow area can be increased, the exhaust back pressure can be effectively reduced, and the power loss of the engine can be reduced.

In some embodiments, the outlet tube housing is provided with a sleeve 216, with sound damping cotton a disposed between the sleeve 216 and the outlet tube 2131, the sleeve 216 being located in the first rear sound damping chamber 211 a. For eliminating high frequency airflow noise.

The present application also provides an automobile comprising a body and an automobile exhaust muffler 100.

The vehicle body includes a floor, and the vehicle exhaust muffler 100 is the vehicle exhaust muffler 100 according to any of the above embodiments, wherein the front muffler 11 is longitudinally disposed at a front portion of the floor, and the rear muffler 21 is transversely disposed at a rear portion of the floor.

The front muffler and the rear muffler are arranged in a front-back combined arrangement mode, the front muffler is longitudinally arranged, the channel space in the floor of the vehicle body can be fully utilized, the rear muffler is transversely arranged, the rear space of the vehicle body can be fully utilized, the volumes of the front muffler and the rear muffler can be increased on the premise that the vehicle body is not additionally occupied, the sound attenuation amount is improved, and then the low-frequency noise of the hybrid electric vehicle is reduced or eliminated.

The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. An automotive exhaust muffler, comprising:

A front muffler assembly including a front muffler arranged in a longitudinal direction of a vehicle body; and

The rear muffler assembly comprises a rear muffler arranged transversely along the vehicle body, the rear muffler is positioned behind the front muffler, and an air inlet of the rear muffler is communicated with an air outlet of the front muffler.

2. The exhaust muffler for an automobile according to claim 1, wherein,

The front muffler is perpendicular to the rear muffler, and the front muffler faces toward a middle position of the rear muffler in a lateral direction.

3. The exhaust muffler for an automobile according to claim 2, wherein,

The front silencer assembly comprises a first connecting pipe, the rear silencer assembly comprises a second connecting pipe, one end of the first connecting pipe is communicated with the air outlet of the front silencer, the other end of the first connecting pipe is connected with one end of the second connecting pipe through a flange, and the other end of the second connecting pipe is communicated with the air inlet of the rear silencer.

4. The exhaust muffler for an automobile according to claim 3, wherein,

The pre-muffler assembly further comprises a first front hook arranged at a first position of the pre-muffler, a second front hook arranged at a second position of the pre-muffler, and a third front hook arranged at a third position of the first connecting pipe, wherein the first position, the second position, and the third position are non-collinear; and/or the number of the groups of groups,

The rear muffler assembly further includes a first rear hook disposed at a fourth position of the rear muffler, a second rear hook disposed at a fifth position of the rear muffler, and a third rear hook disposed at a sixth position of the second connection pipe, wherein the fourth position, the fifth position, and the sixth position are non-collinear.

5. The exhaust muffler for an automobile according to claim 4, wherein,

The first position and the second position are respectively positioned at two lateral sides of the pre-muffler, and connecting lines of the first position, the second position and the third position form a triangle; and/or the number of the groups of groups,

The fourth position and the fifth position are respectively positioned at two lateral sides of the rear muffler, and connecting lines of the fourth position, the fifth position and the sixth position form a triangle.

6. The automotive exhaust muffler according to any one of claims 1 to 5, characterized in that the pre-muffler comprises:

A front muffler shell having a first front muffler chamber, a second front muffler chamber, and a third front muffler chamber;

The front inner pipe is arranged in the front silencing shell in a penetrating mode, the front inner pipe is provided with a plurality of tuning holes and a plurality of air outlet holes, the tuning holes are located in the first front silencing cavity, the air outlet holes are located in the third front silencing cavity, silencing cotton is arranged in the third front silencing cavity, one end of the front inner pipe is communicated with an air inlet of the front silencer, and the other end of the front inner pipe is communicated with an air outlet of the front silencer; and

The tuning pipe, in the sound-deadening shell was worn to locate by the tuning pipe, just the entrance point of tuning pipe with first preceding sound-deadening chamber intercommunication, the exit end of tuning pipe with the sound-deadening chamber intercommunication before the second.

7. The automotive exhaust muffler of claim 6, wherein the rear muffler comprises:

The rear muffler shell comprises a first rear muffler cavity, a second rear muffler cavity and a third rear muffler cavity;

The air inlet pipe penetrates through the rear silencing shell, one end of the air inlet pipe is communicated with an air inlet of the rear silencer, and the other end of the air inlet pipe is communicated with the second rear silencing cavity;

The reducer comprises an air outlet pipe and a branch pipe communicated with the air outlet pipe, the cross section area of the branch pipe is smaller than that of the air outlet pipe, the air outlet pipe penetrates through the rear silencing shell, the air outlet end of the air outlet pipe is communicated with the air outlet of the rear silencer, the air inlet end of the air outlet pipe and the air inlet end of the branch pipe are both communicated with the third rear silencing cavity, and the air inlet end of the air outlet pipe is communicated with the second rear silencing cavity;

And the valve is rotatably arranged at the air inlet end of the air outlet pipe and is used for opening or closing the air inlet end of the air outlet pipe based on the air flow.

8. The automotive exhaust muffler of claim 7, wherein the rear muffler includes a rear inner tube disposed through the rear muffler shell, and wherein an inlet end of the rear inner tube communicates with the first rear muffler chamber, an outlet end of the rear inner tube communicates with the third rear muffler chamber, and the first rear muffler chamber communicates with the second rear muffler chamber.

9. The exhaust muffler of an automobile as claimed in claim 8, wherein,

The air outlet pipe sleeve is provided with a sleeve, noise elimination cotton is arranged between the sleeve and the air outlet pipe, and the sleeve is positioned in the first rear noise elimination cavity.

10. An automobile, comprising:

A vehicle body including a floor;

The automotive exhaust muffler of any one of claims 1-9, wherein the front muffler is disposed longitudinally forward of the floor and the rear muffler is disposed transversely rearward of the floor.