CN107461235B - Exhaust silencing device based on temperature regulation - Google Patents
Exhaust silencing device based on temperature regulation Download PDFInfo
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- CN107461235B CN107461235B CN201710747722.7A CN201710747722A CN107461235B CN 107461235 B CN107461235 B CN 107461235B CN 201710747722 A CN201710747722 A CN 201710747722A CN 107461235 B CN107461235 B CN 107461235B
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- temperature
- silencer
- cooling system
- exhaust
- temperature sensor
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- 230000033228 biological regulation Effects 0.000 title claims abstract description 16
- 230000030279 gene silencing Effects 0.000 title claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 48
- 230000003584 silencer Effects 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 description 5
- 230000008030 elimination Effects 0.000 description 5
- 238000003379 elimination reaction Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
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- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
Landscapes
- 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 discloses an exhaust silencing device based on temperature regulation, which comprises an exhaust pipe connected with an exhaust pipeline of an automobile engine, a silencer arranged on the exhaust pipe, a cooling system used for cooling airflow entering the silencer, a temperature control system used for controlling the temperature of the airflow entering the silencer, and a calibration device arranged at the outlet end of the silencer and used for collecting noise at the outlet of the silencer, wherein the cooling system is arranged on the exhaust pipe, the temperature control system is communicated with the cooling system, and the calibration device is connected with the temperature control system. The exhaust silencing device has a simple structure, has the function of controlling the inlet temperature of the silencer, and can ensure that the temperature of a flow field in the silencer meets the temperature requirement of the silencing frequency band characteristic of the silencer by adjusting the inlet temperature of the silencer, thereby reducing the exhaust noise of an automobile engine.
Description
Technical Field
The invention relates to the technical field of automobile part manufacturing, in particular to an exhaust silencing device based on temperature regulation.
Background
The exhaust muffler is used as a key part of an internal combustion engine automobile and plays an important role in vibration, noise and comfort of the whole automobile. The traditional silencer is divided into a reactive silencer and a resistive silencer, wherein the reactive silencer is mainly used for eliminating medium and low frequency noise, and the resistive silencer has good sound absorption performance on the medium and high frequency noise. Along with the guidance of national policies and the development of automobile industry, more and more hybrid vehicle models face the market, and because the engine speed is high (generally at 1200 plus 1500 RPM) during charging, the load is large, the exhaust temperature is high, the noise is large, and the traditional muffler cannot play a good noise elimination role, the problem troubles whole automobile factories and consumers.
Patent CN201210375189.3 proposes a design scheme for reducing exhaust temperature by spraying, but the invention aims at adjusting exhaust temperature and discharging pollution, has fixed structure, cannot be applied to different starting conditions and noise levels, and cannot control the noise of the exhaust tail port of the automobile by dynamically changing exhaust temperature.
Disclosure of Invention
The invention aims to provide an exhaust silencing device based on temperature regulation, aiming at the problems in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the exhaust muffler device comprises an exhaust pipe connected with an exhaust pipeline of an automobile engine, a muffler arranged on the exhaust pipe, a cooling system used for cooling airflow entering the muffler, a temperature control system used for controlling the temperature of the airflow entering the muffler, and a calibration device arranged at the outlet end of the muffler for collecting noise at the outlet of the muffler, wherein the cooling system is arranged on the exhaust pipe, the temperature control system is communicated with the cooling system, and the calibration device is connected with the temperature control system.
Preferably, the temperature control system comprises a controller, the controller is connected with the cooling system, and the calibration equipment is connected with the controller.
Further, the temperature control system also comprises a first temperature sensor arranged at the inlet end of the silencer, and the first temperature sensor is connected with the controller.
Still further, the first temperature sensor is disposed on the cooling system and at an outlet end of the cooling system.
Further, the first temperature sensor is provided on the exhaust pipe between the cooling system and the muffler.
Preferably, the temperature control system further comprises a second temperature sensor disposed at an inlet end of the cooling system, the second temperature sensor being connected to the controller.
Preferably, the cooling system adopts a water cooling system.
Further, the water cooling system comprises a water pump, a casing, a cold water connecting pipe and a hot water connecting pipe, wherein the casing is arranged outside the exhaust pipe in a sleeved mode, the cold water connecting pipe and the hot water connecting pipe are connected to the casing respectively, the cold water connecting pipe is communicated with the water pump, and the hot water connecting pipe is communicated with an intercooler of the automobile engine.
Preferably, the calibration device is detachably arranged at the outlet end of the muffler.
Preferably, one end of the exhaust pipe is fixedly connected with a flange, and the flange is connected with an exhaust pipeline of the automobile engine.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the exhaust silencing device based on temperature regulation has a simple structure, has the function of controlling the inlet temperature of the silencer, and can ensure that the temperature of a flow field in the silencer meets the temperature requirement of the silencing frequency band characteristic of the silencer by regulating the inlet temperature of the silencer, thereby reducing the exhaust noise of an automobile engine.
Drawings
Fig. 1 is a schematic structural diagram of an exhaust muffler device based on temperature regulation according to the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
As shown in fig. 1, the exhaust muffler device based on temperature regulation of the present invention includes an exhaust pipe 1 connected to an exhaust pipe of an automobile engine, a muffler 2 disposed on the exhaust pipe 1, a cooling system 3 for cooling an air flow entering the muffler 2, a temperature control system for controlling a temperature of the air flow entering the muffler 2, and a calibration device 5 disposed at an outlet end of the muffler 2 to collect noise at an outlet of the muffler 2, wherein the cooling system 3 is disposed on the exhaust pipe 1, the temperature control system is communicated with the cooling system 3, and the calibration device 5 is connected to the temperature control system.
A flange 6 is fixedly provided at one end of the exhaust pipe 1, and the exhaust pipe 1 is connected to an exhaust line of an automobile engine via the flange 6.
The cooling system 3 may be a water cooling system, an air cooling system, or the like. In this embodiment, the cooling system 3 is a water cooling system. Specifically, the water cooling system comprises a water pump 31, a shell 32, a cold water connecting pipe 33 and a hot water connecting pipe 34, wherein the shell 32 is sleeved outside the exhaust pipe 1, the shell 32 is provided with a hollow cavity, the cold water connecting pipe 33 and the hot water connecting pipe 34 are respectively arranged on the shell 32 and are communicated with the hollow cavity, the water pump 31 is connected with the cold water connecting pipe 33, and the hot water connecting pipe 34 is connected to an intercooler of the automobile engine.
The temperature control system comprises a controller 41, which controller 41 may be integrated in the control system of the vehicle, and the water pump 31 and the calibration device 5 are both connected to the controller 41. The flow rate of the water pump 31 is controlled by the controller 41 to control the temperature of the air flow entering the muffler 2. The air flow entering the muffler 2 is discharged through the tail port of the muffler 2, the calibration device 5 collects the noise of the air flow at the outlet end of the muffler 2 and feeds the noise back to the controller 41, and the controller 41 adjusts the flow rate of the water pump 31 according to the characteristics of the noise.
In order to realize the accurate control of the flow of the water pump 31, thereby controlling the temperature of the air flow entering the muffler 2, and further enabling the muffler 2 to meet the requirements on the muffling frequency and the muffling amount under various working conditions. The temperature control system further comprises a first temperature sensor 42 arranged at the inlet end of the muffler 2, the first temperature sensor 42 is connected with the controller 41, a reference value of the temperature of the air flow entering the muffler 2 is set in the controller 41, the reference value is matched with the noise elimination frequency and the noise elimination amount which are to be achieved when the automobile engine operates in various working conditions, the first temperature sensor 42 is used for monitoring the temperature value of the air flow actually entering the muffler 2, the difference value between the actual temperature value measured by the first temperature sensor 42 and the reference value is calculated by the controller 41, and the controller 41 adjusts the flow of the water pump 31 according to the difference value, so that the actual temperature value measured by the first temperature sensor 42 reaches the reference value, and the muffler 2 can meet the requirements of the noise elimination frequency and the noise elimination amount under various working conditions.
The first temperature sensor 42 may be mounted on the housing 32 of the cooling system 3 at a location at the outlet end of the cooling system 3, but the first temperature sensor 42 may also be mounted on the exhaust pipe 1 between the cooling system 3 and the muffler 2.
The temperature control system further comprises a second temperature sensor 43 arranged at the inlet end of the cooling system 3, the second temperature sensor 43 being connected to the controller 41, the second temperature sensor 43 being used for monitoring the temperature of the air flow entering the cooling system 3, the flow rate of the water pump 31 being more accurately controlled by means of the second temperature sensor 43.
The second temperature sensor 43 may be mounted on the housing 32 of the cooling system 3 at a location at the inlet end of the cooling system 3, although the second temperature sensor 43 may also be mounted on the exhaust pipe 1 between the cooling system 3 and the flange 6.
When the first temperature sensor 42 and the second temperature sensor 43 are mounted on the cooling system 3, fixing seats with internal threads are respectively provided on opposite ends of the housing 32 of the cooling system 3 in the airflow flowing direction, and the first temperature sensor 42 and the second temperature sensor 43 are respectively fixedly provided on the fixing seats through threaded connection.
The working principle of the exhaust muffler device is as follows:
the automobile engine runs under different working conditions, and exhaust enters the exhaust silencing device from the flange 6. When passing through the exhaust pipe 1, the first temperature sensor 42 collects the temperature of the air flow entering the muffler 2, and feeds back a temperature signal to the controller 41; the exhaust gas passes through the muffler 2 and is ejected from the tail port of the muffler 2, and simultaneously, the exhaust gas emits radiation noise. The calibration device 5 collects a noise signal at the outlet end of the muffler 2 and feeds back the noise signal to the controller 41. The controller 41 analyzes the frequency range of the noise at the outlet end of the muffler 2, and judges whether the muffler 2 plays a key role in muffling; meanwhile, the controller 41 calculates a difference value between an actual temperature value of the air flow entering the muffler 2 and a reference value of the temperature of the air flow set in the controller 41 according to the temperature signal fed back by the first temperature sensor 42, then the controller 41 adjusts the flow rate of the water pump 31 according to the difference value, so that the actual temperature value of the air flow entering the muffler 2 reaches a design value range of the reference value until the calibration work of the muffler 2 under each working condition can reach a design muffling frequency and muffling amount, and then the controller 41 stores calibration data. The calibration device 5 is detachably arranged at the outlet end of the muffler 2, so that the calibration device 5 can be removed from the exhaust muffler device during operation of the vehicle after calibration has been completed.
In conclusion, the exhaust muffler device has the function of controlling the inlet temperature of the muffler, the temperature of a flow field in the muffler can meet the temperature requirement of the muffling frequency band characteristic of the muffler by adjusting the inlet temperature of the muffler, the problem of high exhaust noise during charging of a hybrid vehicle type can be solved, the exhaust noise can be reduced by 4-6dB (A), the exhaust back pressure is reduced by 2-5kPa, and the exhaust muffler device can be suitable for adjusting the exhaust temperature and the noise when an automobile engine runs under different working conditions.
The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (8)
1. The utility model provides an exhaust muffler device based on temperature regulation which characterized in that: the device comprises an exhaust pipe connected with an exhaust pipeline of an automobile engine, a silencer arranged on the exhaust pipe, a cooling system used for cooling airflow entering the silencer, a temperature control system used for controlling the temperature of the airflow entering the silencer, and a calibration device arranged at the outlet end of the silencer and used for collecting noise at the outlet of the silencer, wherein the cooling system is arranged on the exhaust pipe, the temperature control system comprises a controller and a first temperature sensor arranged at the inlet end of the silencer, the first temperature sensor, the cooling system and the calibration device are respectively connected with the controller, a reference value of the temperature of the airflow entering the silencer is set in the controller, and the reference value is matched with the silencing frequency and the silencing quantity which are required to be achieved when the automobile engine operates in various working conditions, the first temperature sensor is used for monitoring the temperature value of the air flow entering the silencer actually, the difference value between the actual temperature value measured by the first temperature sensor and a reference value is calculated through the controller, and the controller adjusts the flow of the cooling liquid of the cooling system according to the difference value.
2. The temperature regulation-based exhaust muffler device according to claim 1, wherein: the first temperature sensor is arranged on the cooling system and is positioned at the outlet end of the cooling system.
3. The temperature regulation-based exhaust muffler device according to claim 1, wherein: the first temperature sensor is disposed on the exhaust pipe between the cooling system and the muffler.
4. The temperature regulation-based exhaust muffler device according to claim 1, wherein: the temperature control system further comprises a second temperature sensor arranged at the inlet end of the cooling system, and the second temperature sensor is connected with the controller.
5. The temperature regulation-based exhaust muffler device according to claim 1, wherein: the cooling system adopts a water cooling system.
6. The temperature regulation-based exhaust muffler device according to claim 5, wherein: the water cooling system comprises a water pump, a shell arranged outside the exhaust pipe in a sleeved mode, a cold water connecting pipe and a hot water connecting pipe, wherein the cold water connecting pipe and the hot water connecting pipe are connected to the shell respectively, the cold water connecting pipe is communicated with the water pump, and the hot water connecting pipe is communicated with an intercooler of the automobile engine.
7. The temperature regulation-based exhaust muffler device according to claim 1, wherein: the calibration device is detachably arranged at the outlet end of the muffler.
8. The temperature regulation-based exhaust muffler device according to claim 1, wherein: one end of the exhaust pipe is fixedly connected with a flange, and the flange is connected with an exhaust pipeline of the automobile engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710747722.7A CN107461235B (en) | 2017-08-28 | 2017-08-28 | Exhaust silencing device based on temperature regulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710747722.7A CN107461235B (en) | 2017-08-28 | 2017-08-28 | Exhaust silencing device based on temperature regulation |
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| Publication Number | Publication Date |
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| CN107461235A CN107461235A (en) | 2017-12-12 |
| CN107461235B true CN107461235B (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710747722.7A Active CN107461235B (en) | 2017-08-28 | 2017-08-28 | Exhaust silencing device based on temperature regulation |
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| CN (1) | CN107461235B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547683A (en) * | 2018-02-28 | 2018-09-18 | 成英 | Acquisition cycle refrigeration system for vehicle noise elimination effect |
| CN108661751B (en) * | 2018-02-28 | 2021-08-17 | 梁山长虹专用车制造有限公司 | Collection circulation refrigeration working method for vehicle silencing |
| CN109252915A (en) * | 2018-09-11 | 2019-01-22 | 奇瑞汽车股份有限公司 | A kind of denoising device and noise-reduction method for automobile exhaust system |
| CN109826687A (en) * | 2019-04-08 | 2019-05-31 | 清华大学苏州汽车研究院（吴江） | A kind of lubricating oil temperature control system and method for engine rig test |
| CN112211695B (en) * | 2020-10-13 | 2021-07-20 | 佛山市龙生光启科技有限公司 | Intelligent noise elimination system for engineering machinery |
| CN116221965A (en) * | 2021-12-02 | 2023-06-06 | 青岛海尔空调器有限总公司 | Air conditioner pipeline noise control system and air conditioner |
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|---|---|---|---|---|
| CN2744840Y (en) * | 2004-07-26 | 2005-12-07 | 杨忠海 | Automobile exhaust system |
| CN102140955A (en) * | 2010-01-29 | 2011-08-03 | 罗伯特.博世有限公司 | Method for determining exhaust gas temperature |
| CN104675493A (en) * | 2013-11-29 | 2015-06-03 | 大连鑫永工业制造有限公司 | Automobile noise reduction exhaust pipe |
| CN104675494A (en) * | 2013-11-29 | 2015-06-03 | 大连鑫永工业制造有限公司 | Temperature control engine exhausting pipe |
| CN106150683A (en) * | 2016-07-27 | 2016-11-23 | 江苏东方康弛机电科技有限公司 | Generating set water-cooled jacketed muffle device |
| CN207297129U (en) * | 2017-08-28 | 2018-05-01 | 清华大学苏州汽车研究院（相城） | Air exhaust muffler device based on temperature adjustment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201057073Y (en) * | 2007-07-23 | 2008-05-07 | 中国船舶重工集团公司第七一九研究所 | Exhausting cooling-down denoising system for diesel engine |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2744840Y (en) * | 2004-07-26 | 2005-12-07 | 杨忠海 | Automobile exhaust system |
| CN102140955A (en) * | 2010-01-29 | 2011-08-03 | 罗伯特.博世有限公司 | Method for determining exhaust gas temperature |
| CN104675493A (en) * | 2013-11-29 | 2015-06-03 | 大连鑫永工业制造有限公司 | Automobile noise reduction exhaust pipe |
| CN104675494A (en) * | 2013-11-29 | 2015-06-03 | 大连鑫永工业制造有限公司 | Temperature control engine exhausting pipe |
| CN106150683A (en) * | 2016-07-27 | 2016-11-23 | 江苏东方康弛机电科技有限公司 | Generating set water-cooled jacketed muffle device |
| CN207297129U (en) * | 2017-08-28 | 2018-05-01 | 清华大学苏州汽车研究院（相城） | Air exhaust muffler device based on temperature adjustment |
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| CN107461235A (en) | 2017-12-12 |
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