CN111425289A - Structure for reducing noise of tail pipe and strengthening tail pipe - Google Patents
Structure for reducing noise of tail pipe and strengthening tail pipe Download PDFInfo
- Publication number
- CN111425289A CN111425289A CN202010440656.0A CN202010440656A CN111425289A CN 111425289 A CN111425289 A CN 111425289A CN 202010440656 A CN202010440656 A CN 202010440656A CN 111425289 A CN111425289 A CN 111425289A
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- China
- Prior art keywords
- end cover
- air outlet
- pipe
- outer end
- inner end
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Links
- 238000005728 strengthening Methods 0.000 title claims abstract description 11
- 238000000746 purification Methods 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 230000008602 contraction Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention belongs to the technical field of tail gas treatment system equipment of gas engines, and particularly relates to a structure for reducing noise of a tail pipe and strengthening the tail pipe, which comprises a box body and an air outlet pipe assembly, wherein one end of the box body is provided with an end cover, a purification bag body assembly is arranged in the box body, the air outlet pipe assembly is arranged on the end cover, the end cover comprises an outer end cover and an inner end cover, air outlet holes are formed in the same positions of the outer end cover and the inner end cover, and a cavity is formed among the inner end cover, the box body and the purification; the air outlet pipe assembly is arranged in an air outlet hole of the outer end cover, and the outer end of the air outlet pipe assembly extends out of the outer end cover; and a pipe body is arranged in the air outlet hole of the inner end cover, an expanding opening is formed in the inner end of the pipe body and extends into the cavity, and the outer end of the pipe body is connected with the air outlet pipe assembly. The invention has the beneficial effects that: the structure is retrencied, high-efficient, and stability is high, can effectively reduce the tail gas noise to can strengthen the structure of giving vent to anger, guarantee aftertreatment noise reduction effect, improve the outlet duct durability.
Description
Technical Field
The invention belongs to the technical field of gas engine tail gas treatment system equipment, and particularly relates to a structure for reducing tail pipe noise and reinforcing a tail pipe.
Background
The current automobile industry is rapidly developed, and with the development of large-displacement and high-speed automobiles, the influence of exhaust noise on automobile noise and riding comfort is greater and greater, so the noise reduction design of an exhaust system becomes very important.
Exhaust system noise, exhaust tail-gate noise, is a pulsating noise that is composed of air noise and airflow friction noise. The steady air flow gives off air noise at the tail pipe, while the unsteady air flow generates frictional noise. In tailpipe noise, the contribution of these two types of noise depends on the magnitude and velocity of the airflow. When the flow is small and the speed is low, the air noise accounts for the main component; and when the flow rate is large and the speed is high, the friction noise is the main component.
The prior art still has the noise reduction effect poor, and experimental not up to standard and the cracked condition of outlet duct still exist.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a structure for reducing the noise of a tail pipe and reinforcing the tail pipe, has a simple and efficient structure, can effectively reduce the noise of the tail pipe, and simultaneously reduces the risk of breakage of an air outlet pipe.
According to the technical scheme of the invention, the structure for reducing noise of the tail pipe and strengthening the tail pipe comprises a box body and an air outlet pipe assembly, wherein one end of the box body is provided with an end cover, a purification bag body assembly is arranged in the box body, the air outlet pipe assembly is arranged on the end cover, the end cover comprises an outer end cover and an inner end cover, air outlet holes are formed in the same positions of the outer end cover and the inner end cover, and a cavity is formed among the inner end cover, the box body and the purification bag body assembly; the air outlet pipe assembly is arranged in an air outlet hole of the outer end cover, and the outer end of the air outlet pipe assembly extends out of the outer end cover; and a pipe body is arranged in the air outlet hole of the inner end cover, an expanding opening is formed in the inner end of the pipe body and extends into the cavity, and the outer end of the pipe body is connected with the air outlet pipe assembly.
Furthermore, a reinforcing patch is arranged between the inner end cover and the inner end of the tube body.
Further, the tube body comprises a first straight tube section, a contraction section and a second straight tube section which are sequentially arranged, the middle of the first straight tube section is installed in the air outlet hole of the inner end cover, the second straight tube section is located in the cavity, and the reinforcing patch is arranged between the inner end cover and the second straight tube section.
Furthermore, the reinforcing patch comprises a first connecting section and a second connecting section which are vertically arranged, and the first connecting section and the second connecting section are connected through a transition section.
Furthermore, the air outlet holes of the outer end cover and the inner end cover are provided with outward fillet flanges.
Furthermore, the outer end of the tube body extends into the air outlet hole of the outer end cover and is sleeved on the air outlet tube assembly.
The invention has the beneficial effects that: the structure is retrencied, high-efficient, and stability is high, can effectively reduce the tail gas noise to can strengthen the structure of giving vent to anger, guarantee aftertreatment noise reduction effect, improve the outlet duct durability.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Description of reference numerals: 1-outer end cover, 2-inner end cover, 3-cavity, 4-purification bag body component, 5-air outlet pipe component, 6-reinforcement patch, 7-pipe body, 7.1-flaring, 7.2-second straight pipe section, 7.3-contraction section, 7.4-first straight pipe section and 8-box body.
Detailed Description
The invention is further illustrated by the following examples and figures.
As shown in the figure: reduce tail pipe noise and strengthen the structure of tail pipe, including box 8 and outlet duct subassembly 5, the end cover is established to the one end of box 8, is equipped with in the box 8 and purifies inclusion subassembly 4, and outlet duct subassembly 5 is installed on the end cover. The end covers comprise an outer end cover 1 and an inner end cover 2, air outlet holes are formed in the same positions of the outer end cover 1 and the inner end cover 2, and a cavity 3 is formed among the inner end cover 2, the box body 8 and the purification bag body assembly 4; the air outlet pipe assembly 5 is arranged in an air outlet hole of the outer end cover 1, and the outer end of the air outlet pipe assembly 5 extends out of the outer end cover 1. A pipe body 7 is arranged in the air outlet hole of the inner end cover 2, the inner end of the pipe body 7 extends into the cavity 3 and is provided with a flared opening 7.1 to form a horn mouth structure, and the outer end of the pipe body 7 is connected with the air outlet pipe component 5.
Specifically, a reinforcing patch 6 is arranged between the inner end cover 2 and the inner end of the tube body 7, so that the installation stability of the tube body 7 is ensured. The reinforcing patch 6 includes a first connection section and a second connection section which are vertically arranged and connected by a transition section. The air outlet holes of the outer end cover 1 and the inner end cover 2 are provided with outward fillet flanges, the installation reliability of the air outlet pipe assembly 5 and the pipe body 7 is guaranteed, an approximately triangular structure is formed among the inner end cover 2, the reinforcing patch 6 and the pipe body 7, the structural stability is further enhanced, and the noise is avoided. The tube body 7 can comprise a first straight tube section 7.4, a contraction section 7.3 and a second straight tube section 7.2 which are sequentially arranged, the middle of the first straight tube section 7.4 is installed in an air outlet of the inner end cover 2, the contraction section 7.3 and the second straight tube section 7.2 are located in the cavity 3, a flaring 7.1 is arranged at the inner end of the second straight tube section 7.2, and the reinforcing patch 6 is arranged between the inner end cover 2 and the second straight tube section 7.2. The outer end of the tube body 7 extends into the air outlet hole of the outer end cover 1 and is sleeved on the air outlet tube assembly 5, so that the sealing performance is enhanced.
When the automobile exhaust purification bag is used specifically, the box body is connected with an exhaust pipe of an automobile engine, and engine exhaust enters the cavity through the purification bag body assembly, is guided by the pipe body and is discharged through the exhaust pipe assembly. Meanwhile, the pipe body is fixed by the reinforcing patch, so that the strength of the air outlet pipe is enhanced.
Claims (6)
1. A structure for reducing noise of a tail pipe and strengthening the tail pipe comprises a box body (8) and an air outlet pipe assembly (5), wherein one end of the box body (8) is provided with an end cover, a purification bag body assembly (4) is arranged in the box body (8), and the air outlet pipe assembly (5) is installed on the end cover, and is characterized in that the end cover comprises an outer end cover (1) and an inner end cover (2), air outlet holes are formed in the same position on the outer end cover (1) and the inner end cover (2), and a cavity (3) is formed among the inner end cover (2), the box body (8) and the purification bag body assembly (4); the air outlet pipe assembly (5) is arranged in an air outlet hole of the outer end cover (1), and the outer end of the air outlet pipe assembly (5) extends out of the outer end cover (1); a pipe body (7) is arranged in the air outlet hole of the inner end cover (2), an expanding opening (7.1) is formed in the inner end of the pipe body (7) and extends into the cavity (3), and the outer end of the pipe body (7) is connected with the air outlet pipe assembly (5).
2. A structure for reducing noise from a tail pipe and reinforcing a tail pipe according to claim 1, wherein a reinforcing patch (6) is provided between the inner end cap (2) and the inner end of the pipe body (7).
3. A structure for reducing noise of a tail pipe and strengthening the tail pipe according to claim 2, wherein the pipe body (7) comprises a first straight pipe section (7.4), a contraction section (7.3) and a second straight pipe section (7.2) which are arranged in sequence, the middle of the first straight pipe section (7.4) is installed in the air outlet of the inner end cover (2), the second straight pipe section (7.2) is located in the cavity (3), and the strengthening patch (6) is arranged between the inner end cover (2) and the second straight pipe section (7.2).
4. A tailpipe noise reduction and strengthening structure according to claim 2, characterized in that said strengthening patch (6) comprises a first connection section and a second connection section arranged vertically, and the first connection section and the second connection section are connected by a transition section.
5. A structure for reducing noise of tail pipes and strengthening tail pipes according to claims 1 and 4, characterized in that the air outlet holes of the outer end cover (1) and the inner end cover (2) are provided with outward fillet flanges.
6. The structure for reducing noise of the tail pipe and strengthening the tail pipe according to claim 1, wherein the outer end of the pipe body (7) extends into the air outlet hole of the outer end cover (1) and is sleeved on the air outlet pipe assembly (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440656.0A CN111425289A (en) | 2020-05-22 | 2020-05-22 | Structure for reducing noise of tail pipe and strengthening tail pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440656.0A CN111425289A (en) | 2020-05-22 | 2020-05-22 | Structure for reducing noise of tail pipe and strengthening tail pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111425289A true CN111425289A (en) | 2020-07-17 |
Family
ID=71555167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010440656.0A Pending CN111425289A (en) | 2020-05-22 | 2020-05-22 | Structure for reducing noise of tail pipe and strengthening tail pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111425289A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080013384A (en) * | 2006-08-08 | 2008-02-13 | 현대자동차주식회사 | Tail trim assembly for vehicle |
| CN201462272U (en) * | 2009-06-09 | 2010-05-12 | 中国寰球工程公司 | Reinforced type reducing branching pipe joint structure and reducing branching pipe joint thereof |
| CN202659329U (en) * | 2012-05-24 | 2013-01-09 | 合肥汇凌汽车零部件有限公司 | Installation structure of fire extinguishing muffler tail pipe for fork truck |
| CN104594977A (en) * | 2015-01-29 | 2015-05-06 | 合肥汇凌汽车零部件有限公司 | Silencer for mini-truck internal combustion engine |
| CN212318133U (en) * | 2020-05-22 | 2021-01-08 | 无锡威孚力达催化净化器有限责任公司 | Structure for reducing noise of tail pipe and strengthening tail pipe |
-
2020
- 2020-05-22 CN CN202010440656.0A patent/CN111425289A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080013384A (en) * | 2006-08-08 | 2008-02-13 | 현대자동차주식회사 | Tail trim assembly for vehicle |
| CN201462272U (en) * | 2009-06-09 | 2010-05-12 | 中国寰球工程公司 | Reinforced type reducing branching pipe joint structure and reducing branching pipe joint thereof |
| CN202659329U (en) * | 2012-05-24 | 2013-01-09 | 合肥汇凌汽车零部件有限公司 | Installation structure of fire extinguishing muffler tail pipe for fork truck |
| CN104594977A (en) * | 2015-01-29 | 2015-05-06 | 合肥汇凌汽车零部件有限公司 | Silencer for mini-truck internal combustion engine |
| CN212318133U (en) * | 2020-05-22 | 2021-01-08 | 无锡威孚力达催化净化器有限责任公司 | Structure for reducing noise of tail pipe and strengthening tail pipe |
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