CN211737261U - Vehicle exhaust silencer and vehicle - Google Patents
Vehicle exhaust silencer and vehicle Download PDFInfo
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- CN211737261U CN211737261U CN202020165025.8U CN202020165025U CN211737261U CN 211737261 U CN211737261 U CN 211737261U CN 202020165025 U CN202020165025 U CN 202020165025U CN 211737261 U CN211737261 U CN 211737261U
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Abstract
For overcoming the problem that current vehicle exhaust system is difficult to realize the different sound quality of exhausting and switches, the utility model provides a vehicle exhaust silencer and vehicle, vehicle exhaust silencer includes noise elimination cavity, first intermediate pipe, first exhaust branch pipe, intake pipe and exhaust person in charge, the noise elimination cavity includes first cavity and the second cavity that the interval set up, exhaust person in charge is provided with the control valve, first intermediate pipe is located in the second cavity, just the one end of first intermediate pipe is inserted first cavity, first intermediate pipe is located first venthole has been seted up on the pipeline section of second cavity, the inlet end of first exhaust branch pipe insert to in the second cavity, the inlet end of first exhaust branch pipe is provided with first pressure valve. The utility model provides a switching of vehicle exhaust muffler accessible control valve is opened and is closed realization exhaust sound quality at silent state and motion state, and control is convenient, and stable in structure is reliable.
Description
Technical Field
The utility model belongs to the technical field of car structural component, concretely relates to vehicle exhaust silencer and vehicle.
Background
The automobile exhaust system is an important component of an automobile, exhaust gas discharged by the exhaust system brings combustion noise to the tail of the automobile, order noise and friction noise with high sound pressure level are generated at the tail, and the exhaust noise is reduced and compensated to different degrees, so that the function of different sound quality of exhaust can be realized.
Along with the improvement of living standard of people, the requirement of people on the whole vehicle is changed from an initial travel tool to a comfortable household necessity, so that the requirement on the noise of the whole vehicle is also improved besides a relatively strict requirement on the dynamic property of a vehicle type, and the whole vehicle is required to have different sounds under different driving modes.
How to realize the conversion of different sound qualities of the exhaust is an issue to be solved.
The existing low-back-pressure automobile exhaust muffler with multiple switchable sound qualities is complex to operate and prone to failure, however, the exhaust muffler realizes the switching of the sound qualities through a complex valve control structure and multiple exhaust pipelines.
SUMMERY OF THE UTILITY MODEL
Be difficult to realize the problem that the different sound quality of exhaust switched to current vehicle exhaust system, the utility model provides a vehicle exhaust silencer and vehicle.
The utility model provides an above-mentioned technical problem adopted technical scheme as follows:
in one aspect, the utility model provides a vehicle exhaust muffler, including noise elimination cavity, first intermediate pipe, first exhaust branch pipe, intake pipe and exhaust main pipe, the noise elimination cavity includes first cavity and the second cavity that the interval set up, the intake pipe with exhaust main pipe connects respectively the first cavity, exhaust main pipe is provided with the control valve, first intermediate pipe is located in the second cavity, and one end of first intermediate pipe inserts the first cavity, first intermediate pipe is located the pipeline section of second cavity has seted up first venthole, the inlet end of first exhaust branch pipe inserts in the second cavity, the outlet end of first exhaust branch pipe wears out the noise elimination cavity, the inlet end of first exhaust branch pipe is provided with first pressure valve; when the vehicle exhaust muffler is in a mute state, the control valve is opened, and the first pressure valve is closed; when the vehicle exhaust muffler is in a motion mode, the control valve is closed, and the first pressure valve is pushed to be opened by air pressure.
Optionally, the muffling chamber further includes a third chamber, the second chamber is located between the first chamber and the third chamber, one end of the first intermediate pipe is inserted into the first chamber, and the other end of the first intermediate pipe is inserted into the third chamber.
Optionally, a first partition plate and a second partition plate are arranged in the silencing chamber, the first chamber and the second chamber are isolated from each other by the first partition plate, and the first middle pipe penetrates through and is fixed on the first partition plate; the second chamber and the third chamber are separated from each other by the second partition plate, and the first intermediate pipe and the first exhaust branch pipe pass through and are fixed to the second partition plate.
Optionally, the vehicle exhaust muffler further includes a second middle pipe and a second exhaust branch pipe, the muffling chamber further includes a fourth chamber, the second chamber and the fourth chamber are located at two sides of the first chamber, the second middle pipe is located in the fourth chamber, one end of the second middle pipe is inserted into the first chamber, a pipe section of the second middle pipe located in the fourth chamber is provided with a second air outlet, an air inlet end of the second exhaust branch pipe is inserted into the fourth chamber, an air outlet end of the second exhaust branch pipe penetrates through the muffling chamber, and an air inlet end of the second exhaust branch pipe is provided with a second pressure valve; when the vehicle exhaust muffler is in a mute state, the control valve is opened, and the second pressure valve is closed; when the vehicle exhaust muffler is in a motion mode, the control valve is closed, and the second pressure valve is pushed to be opened by air pressure.
Optionally, the muffling chamber further includes a fifth chamber, the fourth chamber is located between the first chamber and the fifth chamber, one end of the second intermediate pipe is inserted into the first chamber, and the other end of the second intermediate pipe is inserted into the fifth chamber.
Optionally, a third partition plate and a fourth partition plate are arranged in the silencing chamber, the first chamber and the fourth chamber are isolated from each other by the third partition plate, and the second intermediate pipe penetrates through and is fixed to the third partition plate; the fourth chamber and the fifth chamber are isolated from each other by the fourth partition plate, and the second intermediate pipe and the second exhaust branch pipe pass through and are fixed to the fourth partition plate.
Optionally, the first pressure valve and the second pressure valve are torsion spring control valves.
Optionally, the internal diameter of the exhaust main pipe is greater than the internal diameter of the first exhaust branch pipe, the internal diameter of the exhaust main pipe is greater than the internal diameter of the second exhaust branch pipe, and the air outlet end of the exhaust main pipe, the air outlet end of the first exhaust branch pipe and the air outlet end of the second exhaust branch pipe extend side by side along the same direction.
Optionally, the control device further comprises a controller, the controller is connected with the control valve, and the controller is used for controlling the opening and closing of the control valve.
In another aspect, the present invention provides a vehicle including the vehicle exhaust muffler as described above.
According to the utility model provides a vehicle exhaust silencer has set up first exhaust branch and main exhaust pipe, when needs adjust vehicle exhaust silencer is in the silence state, steerable the control valve is closed, thereby the waste gas that enters into by the intake pipe in the first cavity makes the atmospheric pressure of first cavity increase, can promote after atmospheric pressure increases the first pressure valve opens, thereby make waste gas flow into to the second cavity through the first intermediate pipe, discharge after flowing into first exhaust branch by the second cavity again, this waste gas takes place the inflation in the process of flowing into the second cavity by the first intermediate pipe, has better noise cancelling effect, the sealed main exhaust pipe plays the effect of quarter wave pipe simultaneously, in order to eliminate the noise of specific frequency; when the vehicle exhaust muffler needs to be adjusted to be in a motion state, the control valve can be opened, so that the exhaust gas introduced from the air inlet pipe is directly exhausted from the exhaust main pipe through the first cavity, the exhaust sound is large, the exhaust back pressure is small, and the output performance of an engine is improved; the vehicle exhaust muffler can realize the switching of the exhaust sound quality between a mute state and a motion state by opening and closing the single control valve, is convenient to control, and has a stable and reliable structure.
Drawings
Fig. 1 is a schematic structural diagram of a vehicle exhaust muffler according to an embodiment of the present invention.
The reference numbers in the drawings of the specification are as follows:
1. a sound attenuation chamber; 11. a first chamber; 12. a second chamber; 13. a third chamber; 14. a fourth chamber; 15. a fifth chamber; 2. an air inlet pipe; 3. a main exhaust pipe; 31. a control valve; 4. a first intermediate pipe; 41. a first air outlet hole; 5. a second intermediate pipe; 51. a second air outlet; 6. a first exhaust branch pipe; 61. a first pressure valve; 7. a second exhaust branch pipe; 71. a second pressure valve.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a vehicle exhaust muffler, which comprises a muffler chamber 1, a first middle pipe 4, a first exhaust branch pipe 6, an intake pipe 2 and an exhaust main pipe 3, the silencing chamber 1 comprises a first chamber 11 and a second chamber 12 which are arranged at intervals, the air inlet pipe 2 and the exhaust main pipe 3 are respectively connected with the first chamber 11, the main exhaust pipe 3 is provided with a control valve 31, the first intermediate pipe 4 is located in the second chamber 12, one end of the first middle pipe 4 is inserted into the first chamber 11, a first air outlet 41 is arranged on the pipe section of the first middle pipe 4 positioned in the second chamber 12, the air inlet end of the first exhaust branch pipe 6 is inserted into the second chamber 12, the air outlet end of the first exhaust branch pipe 6 penetrates through the silencing chamber 1, and the air inlet end of the first exhaust branch pipe 6 is provided with a first pressure valve 61; when the vehicle exhaust muffler is in a mute state, the control valve 31 is opened, and the first pressure valve 61 is closed; when the vehicle exhaust muffler is in the sport mode, the control valve 31 is closed, and the first pressure valve 61 is pushed to open by the air pressure.
When the vehicle exhaust muffler needs to be adjusted to be in a silent state, the control valve 31 can be controlled to be closed, so that the exhaust gas entering the first cavity from the air inlet pipe 2 increases the air pressure of the first cavity, the first pressure valve 61 can be pushed to be opened after the air pressure is increased, the exhaust gas flows into the second cavity through the first middle pipe 4 and then flows into the first exhaust branch pipe 6 from the second cavity to be exhausted, the exhaust gas expands in the process of flowing into the second cavity from the first middle pipe 4, a good silencing effect is achieved, and meanwhile, the closed exhaust main pipe 3 plays a role of a quarter-wave pipe to eliminate noise with specific frequency; when the vehicle exhaust muffler needs to be adjusted to be in a moving state, the control valve 31 can be opened, so that the exhaust gas introduced from the air inlet pipe 2 is directly exhausted from the exhaust main pipe 3 through the first cavity, the exhaust sound is large, the exhaust back pressure is small, and the output performance of an engine is favorably improved; the vehicle exhaust muffler can realize the switching of the exhaust sound quality between a mute state and a motion state by opening and closing the single control valve 31, is convenient to control, and has a stable and reliable structure.
In an embodiment, the muffling chamber 1 further comprises a third chamber 13, the second chamber 12 being located between the first chamber 11 and the third chamber 13, one end of the first intermediate pipe 4 being inserted into the first chamber 11, and the other end of the first intermediate pipe 4 being inserted into the third chamber 13.
The third chamber 13 is a closed chamber and is communicated with the first chamber 11 through the first middle pipe 4, part of low-frequency and medium-frequency noise enters the third chamber 13 through the first middle pipe 4, the sound pressure level of the low-frequency and medium-frequency noise is reduced, particularly when the vehicle exhaust muffler is in a motion state, the sound pressure level of exhaust can be reduced, and better sound quality in a vehicle is guaranteed.
In one embodiment, a first partition plate and a second partition plate are arranged in the muffling chamber 1, the first chamber 11 and the second chamber 12 are isolated from each other by the first partition plate, and the first middle pipe 4 penetrates through and is fixed on the first partition plate; the second chamber 12 and the third chamber 13 are separated from each other by the second partition plate, and the first intermediate pipe 4 and the first exhaust branch pipe 6 pass through and are fixed to the second partition plate.
The first baffle with the second baffle plays each cavity and keeps apart and does first intermediate pipe 4 with first branch pipe 6 provides the effect of supporting, first baffle with the second baffle is corrosion resistant plate, the intake pipe 2 first intermediate pipe 4 the exhaust is responsible for 3 with first branch pipe 6 is the thin wall pipe.
In an embodiment, the vehicle exhaust muffler further includes a second middle pipe 5 and a second exhaust branch pipe 7, the muffling chamber 1 further includes a fourth chamber 14, the second chamber 12 and the fourth chamber 14 are located on two sides of the first chamber 11, the second middle pipe 5 is located in the fourth chamber 14, one end of the second middle pipe 5 is inserted into the first chamber 11, a second air outlet hole 51 is formed in a pipe section of the second middle pipe 5 located in the fourth chamber 14, an air inlet end of the second exhaust branch pipe 7 is inserted into the fourth chamber 14, an air outlet end of the second exhaust branch pipe 7 penetrates through the muffling chamber 1, and an air inlet end of the second exhaust branch pipe 7 is provided with a second pressure valve 71; when the vehicle exhaust muffler is in a mute state, the control valve 31 is opened, and the second pressure valve 71 is closed; when the vehicle exhaust muffler is in the sport mode, the control valve 31 is closed, and the second pressure valve 71 is pushed to open by the air pressure.
The second intermediate pipe 5 and the second exhaust branch pipe 7 function similarly to the first intermediate pipe 4 and the second exhaust branch pipe 7, and are used for guiding the exhaust of the exhaust gas in a silent state, while achieving a silencing effect.
The number of the first air outlet holes 41 is multiple, and the multiple first air outlet holes 41 are arranged around the pipe section of the first middle pipe 4 located in the second chamber 12; the number of the second air outlet holes 51 is multiple, and the second air outlet holes 51 are arranged around the pipe section of the second middle pipe 5 located in the fourth chamber 14.
In an embodiment, the muffling chamber 1 further comprises a fifth chamber 15, the fourth chamber 14 being located between the first chamber 11 and the fifth chamber 15, one end of the second intermediate pipe 5 being inserted into the first chamber 11, and the other end of the second intermediate pipe 5 being inserted into the fifth chamber 15.
The function of the fifth chamber 15 is similar to that of the third chamber 13, both for reducing the noise pressure level of the exhaust gas.
In one embodiment, a third partition plate and a fourth partition plate are arranged in the muffling chamber 1, the first chamber 11 and the fourth chamber 14 are isolated from each other by the third partition plate, and the second intermediate pipe 5 penetrates through and is fixed on the third partition plate; the fourth chamber 14 and the fifth chamber 15 are isolated from each other by the fourth partition plate, and the second intermediate pipe 5 and the second exhaust branch pipe 7 pass through and are fixed to the fourth partition plate.
The third partition plate and the fourth partition plate have the functions of isolating each chamber and supporting the second middle pipe 5 and the second exhaust branch pipe 7, are stainless steel plates, and the second middle pipe 5 and the second exhaust branch pipe 7 are thin-walled round pipes.
In a mute state, the silencing principle of the vehicle exhaust silencer is as follows:
and closing the control valve 31, allowing the airflow to enter the first chamber 11, then respectively enter the second chamber 12 and the fourth chamber 14 through the first intermediate pipe 4 and the second intermediate pipe 5, allowing the exhaust pressure to push away the first pressure valve 61 and the second pressure valve 71, and then enter the first exhaust branch pipe 6 and the second exhaust branch pipe 7 to be discharged out of the muffler.
The opening angles of the first and second pressure valves 61, 71 gradually increase as the engine speed increases.
In the opening process of the first pressure valve 61 and the second pressure valve 71, the equivalent gas flow cross-sectional area S is gradually increased, and the muffling frequency f is gradually increased as follows:
c, local sound velocity, m/s;
s: opening process of mechanical valve, equivalent gas flow cross section area S, m2；
L1: the length of the left first exhaust pipeline-8 and the length of the right second exhaust pipeline-11 are m;
v: volume of muffler, m3。
The exhaust gas passes through the second chamber 12 and the fourth chamber 14 and is an expansion chamber, and the silencing quantity of the exhaust gas is as follows:
m: expansion lumen expansion ratio;
k: wave number;
λ: wavelength.
The main exhaust pipe 3 acts as a quarter-wave pipe, eliminating noise of specific frequency f 1:
l: the distance, m, from the air inlet end of the main exhaust pipe 3 to the control valve 31.
In a motion state, the silencing principle of the vehicle exhaust silencer is as follows:
opening the control valve 31, selecting a path with lower pressure to flow when the gas flows through the muffler, completely enabling the gas flow to flow out of the vehicle exhaust muffler through the exhaust main pipe 3, and closing the first pressure valve 61 and the second pressure valve 71; no gas flow into the second chamber 12, the fourth chamber 14;
the sound waves of the middle and low frequency f1 partially enter the first chamber 11 and the fifth chamber 15, the sound pressure level of the sound waves is reduced (the reduced noise is a frequency component which has a large influence on the sound quality of the motion mode, and the sound pressure level of the noise is prevented from being too large), and the silencing principle is as follows:
S2: the cross-sectional areas S, m of the first middle pipe 4 and the second middle pipe 52；
L2: the lengths m of the first middle pipe 4 and the second middle pipe 5;
V1: first chamber 11, fifth chamber 15 volume, m3；
The closed first exhaust branch pipe 6 and the closed second exhaust branch pipe 7 form a reverse sound wave absorption device (similar to a quarter wave pipe), so that the noise pressure level of the tail pipe is reduced, and better sound quality in a vehicle is ensured.
In one embodiment, the first pressure valve 61 and the second pressure valve 71 are torsion spring control valves 31.
Specifically, the first pressure valve 61 includes a first torsion spring and a first valve, the first valve is connected to the air inlet end of the first exhaust branch pipe 6 by the first torsion spring, the first valve closes the air inlet end of the first exhaust branch pipe 6 in an initial state, after the first valve is pressurized, the first torsion spring is compressed, and the first valve is opened. The second pressure valve 71 includes a second torsion spring and a second valve, the second valve is connected to the air inlet end of the second exhaust branch pipe 7 through the second torsion spring, the second valve closes the air inlet end of the second exhaust branch pipe 7 in an initial state, after the second valve is pressed, the second torsion spring is compressed, and the second valve is opened.
In one embodiment, the inner diameter of the main exhaust pipe 3 is larger than the inner diameter of the first exhaust branch pipe 6, the inner diameter of the main exhaust pipe 3 is larger than the inner diameter of the second exhaust branch pipe 7, and the outlet end of the main exhaust pipe 3, the outlet end of the first exhaust branch pipe 6 and the outlet end of the second exhaust branch pipe 7 extend side by side in the same direction.
In an embodiment, a controller is further included, and the controller is connected to the control valve 31, and the controller is configured to control opening and closing of the control valve 31.
Specifically, the control valve 31 is an electric control valve, the controller is an ECU controller, and the opening and closing of the control valve 31 can be automatically controlled by the controller.
Another embodiment of the present invention provides a vehicle, including the vehicle exhaust muffler as described above.
The vehicle adopts the vehicle exhaust muffler, and can be switched between a mute state and a motion state, so that different sound quality requirements are met.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a vehicle exhaust silencer, its characterized in that is responsible for including noise elimination cavity, first intermediate pipe, first exhaust branch pipe, intake pipe and exhaust, the noise elimination cavity includes first cavity and the second cavity that the interval set up, the intake pipe with the exhaust is responsible for and is connected respectively first cavity, the exhaust is responsible for and is provided with the control valve, first intermediate pipe is located in the second cavity, just the one end of first intermediate pipe inserts first cavity, first intermediate pipe is located first venthole has been seted up on the pipeline section of second cavity, the inlet end of first exhaust branch pipe inserts to in the second cavity, the end of giving vent to anger of first exhaust branch pipe is worn out the noise elimination cavity, the inlet end of first exhaust branch pipe is provided with first pressure valve.
2. The vehicle exhaust muffler according to claim 1, wherein the muffler chamber further includes a third chamber, the second chamber being located between the first chamber and the third chamber, one end of the first intermediate pipe being inserted into the first chamber, and the other end of the first intermediate pipe being inserted into the third chamber.
3. The vehicle exhaust muffler according to claim 2, wherein a first partition plate and a second partition plate are provided in the muffler chamber, the first chamber and the second chamber being isolated from each other by the first partition plate, the first intermediate pipe passing through and being fixed to the first partition plate; the second chamber and the third chamber are separated from each other by the second partition plate, and the first intermediate pipe and the first exhaust branch pipe pass through and are fixed to the second partition plate.
4. The vehicle exhaust muffler according to claim 1, further comprising a second middle pipe and a second exhaust branch pipe, wherein the sound attenuation chamber further comprises a fourth chamber, the second chamber and the fourth chamber are located on two sides of the first chamber, the second middle pipe is located in the fourth chamber, one end of the second middle pipe is inserted into the first chamber, a second air outlet hole is formed in a pipe section of the second middle pipe located in the fourth chamber, an air inlet end of the second exhaust branch pipe is inserted into the fourth chamber, an air outlet end of the second exhaust branch pipe penetrates out of the sound attenuation chamber, and a second pressure valve is arranged at an air inlet end of the second exhaust branch pipe; when the vehicle exhaust muffler is in a mute state, the control valve is opened, and the second pressure valve is closed; when the vehicle exhaust muffler is in a motion mode, the control valve is closed, and the second pressure valve is pushed to be opened by air pressure.
5. The vehicle exhaust muffler according to claim 4, wherein the muffler chamber further includes a fifth chamber, the fourth chamber is located between the first chamber and the fifth chamber, one end of the second intermediate pipe is inserted into the first chamber, and the other end of the second intermediate pipe is inserted into the fifth chamber.
6. The vehicle exhaust muffler according to claim 5, wherein a third partition plate and a fourth partition plate are provided in the muffler chamber, the first chamber and the fourth chamber are isolated from each other by the third partition plate, and the second intermediate pipe passes through and is fixed to the third partition plate; the fourth chamber and the fifth chamber are isolated from each other by the fourth partition plate, and the second intermediate pipe and the second exhaust branch pipe pass through and are fixed to the fourth partition plate.
7. The vehicle exhaust muffler according to claim 4, wherein the first pressure valve and the second pressure valve are torsion spring control valves.
8. The vehicle exhaust muffler according to claim 4, wherein an inner diameter of the main exhaust pipe is larger than an inner diameter of the first exhaust branch pipe, an inner diameter of the main exhaust pipe is larger than an inner diameter of the second exhaust branch pipe, and an outlet end of the main exhaust pipe, an outlet end of the first exhaust branch pipe, and an outlet end of the second exhaust branch pipe extend side by side in the same direction.
9. The vehicle exhaust muffler according to claim 1, further comprising a controller connected to the control valve, the controller being configured to control opening and closing of the control valve.
10. A vehicle characterized by comprising the vehicle exhaust muffler according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020165025.8U CN211737261U (en) | 2020-02-12 | 2020-02-12 | Vehicle exhaust silencer and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020165025.8U CN211737261U (en) | 2020-02-12 | 2020-02-12 | Vehicle exhaust silencer and vehicle |
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| Publication Number | Publication Date |
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| CN211737261U true CN211737261U (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020165025.8U Active CN211737261U (en) | 2020-02-12 | 2020-02-12 | Vehicle exhaust silencer and vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893276A (en) * | 2022-04-24 | 2022-08-12 | 岚图汽车科技有限公司 | Automobile exhaust silencer, automobile and silencing method |
| CN115217579A (en) * | 2022-01-26 | 2022-10-21 | 广州汽车集团股份有限公司 | Silencer and vehicle |
-
2020
- 2020-02-12 CN CN202020165025.8U patent/CN211737261U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217579A (en) * | 2022-01-26 | 2022-10-21 | 广州汽车集团股份有限公司 | Silencer and vehicle |
| CN115217579B (en) * | 2022-01-26 | 2023-07-21 | 广州汽车集团股份有限公司 | Muffler and vehicle |
| CN114893276A (en) * | 2022-04-24 | 2022-08-12 | 岚图汽车科技有限公司 | Automobile exhaust silencer, automobile and silencing method |
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