CN206360808U - Scattered injecting type gas recirculation system - Google Patents
Scattered injecting type gas recirculation system Download PDFInfo
- Publication number
- CN206360808U CN206360808U CN201621445305.4U CN201621445305U CN206360808U CN 206360808 U CN206360808 U CN 206360808U CN 201621445305 U CN201621445305 U CN 201621445305U CN 206360808 U CN206360808 U CN 206360808U
- Authority
- CN
- China
- Prior art keywords
- waste gas
- scattered
- recirculation system
- pipe
- injecting type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model discloses a kind of scattered injecting type gas recirculation system, including EGR valve, for guiding waste gas to enter the exhaust inlet pipe of EGR valve and being connected to the waste gas exhaust pipe of EGR valve exhaust end；The venthole for waste gas to be discharged is distributed with the tube wall of waste gas exhaust pipe, the system can make waste gas be burnt after being well mixed in inlet manifold in entrance cylinder.
Description
Technical field
The utility model is related to engine component field, specifically a kind of scattered injecting type gas recirculation system.
Background technology
In order to tackle national legislation to motor vehicle exhaust emission more stringent requirement, EGR will broadly be used in hair
In motivation.EGR exhaust can reduce the maximum combustion temperature in combustion process so as to suppress NOx generation, and existing egr system will
Waste gas is guided to EGR valve, and the outlet of EGR valve directly introduces exhaust gas into engine by a resistant to elevated temperatures metallic exhaust gas blast pipe
In inlet manifold, this structure can cause waste gas largely to accumulate in the position exported in inlet manifold close to waste gas exhaust pipe, make
It is not uniform enough into the gas componant in each cylinder, influence the normal operation of engine.
Accordingly, it would be desirable to a kind of scattered spray for making waste gas be burnt after being well mixed in inlet manifold in entrance cylinder
Penetrate formula gas recirculation system.
Utility model content
In view of this, the purpose of this utility model is to overcome defect of the prior art to make waste gas in air inlet there is provided one kind
The scattered injecting type gas recirculation system burnt after being well mixed in manifold in entrance cylinder.
Scattered injecting type gas recirculation system of the present utility model, including EGR valve, for guiding waste gas to enter EGR valve
Exhaust inlet pipe and be connected to the waste gas exhaust pipe of EGR valve exhaust end；It is distributed with the tube wall of waste gas exhaust pipe for that will give up
The venthole of gas discharge；
Further, waste gas exhaust pipe includes silicone tube and is connected to the EGR distribution pipes of the silicone tube port of export, outlet pore size distribution
In the tube wall of EGR distribution pipes；
Further, EGR distribution pipes are right-angle elbow pipe；
Further, in addition to be arranged at exhaust inlet pipe outlet EGR valve import between be used for flow into EGR valve waste gas
The cooler cooled down；
Further, the filter screen for being used for being filtered to waste gas is provided with cooler；
Further, cooler includes housing, is arranged at the water inlet pipe of housing bottom and is arranged at the outlet pipe of case top；
Water inlet pipe and the mutual spatial vertical arrangement of outlet pipe；
Scattered injecting type gas recirculation system of the present utility model also includes the hanging plate for being used to fix cooler；Hanging plate bag
Include the connecting plate and the clip for being used to coordinate with cooler is fixed on connecting plate for being securable to that engine cylinder covers.
The beneficial effects of the utility model are：Scattered injecting type gas recirculation system of the present utility model, engine combustion
Waste gas after burning flows into exhaust inlet pipe from exhaust side by the air flue in cylinder cap, then accesses EGR valve inlet end, EGR valve according to
Different opening can be realized the need for system, the waste gas after cooling is sent to again by inlet manifold by waste gas exhaust pipe, combustion is passed through
Burning the waste gas of room helps to reduce the generation of nitrogen oxides, and beneficial to emission level is improved, the tail end plugs of waste gas exhaust pipe are vented
Pore size distribution makes waste gas be burnt after being well mixed in inlet manifold in entrance cylinder on tube wall.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and examples：
Fig. 1 is structural representation of the present utility model.
Embodiment
Fig. 1 is structural representation of the present utility model；As illustrated, the scattered injecting type waste gas recycling system of the present embodiment
System, including EGR valve 7, for guide waste gas enter EGR valve 7 exhaust inlet pipe 1 and be connected to the exhaust end of EGR valve 7 waste gas row
Tracheae；The waste gas after the venthole 4 for waste gas to be discharged, engine combustion is distributed with the tube wall of waste gas exhaust pipe from exhaust
Side flows into exhaust inlet pipe by air flue in cylinder cap, then accesses the inlet end of EGR valve 7, and EGR valve 7 is according to can be with the need for system
Different opening is realized, the waste gas after cooling is sent to by inlet manifold by waste gas exhaust pipe again, the waste gas for being passed through combustion chamber is helped
In the generation of reduction nitrogen oxides, beneficial to emission level is improved, the tail end plugs of waste gas exhaust pipe, steam vent is distributed in tube wall
On, waste gas is burnt after being well mixed in inlet manifold in entrance cylinder.
In the present embodiment, the waste gas exhaust pipe includes silicone tube 6 and EGR distribution pipes 5；The EGR distribution pipes 5 are close to it
Venthole 4 is distributed with the tube wall of tail end；The head end of EGR valve 7 is connected with the outlet of silicone tube 6, and its head end is additionally provided with for entering
The flange of gas manifold connection, after being connected by flange with inlet manifold, whole EGR distribution pipes 5 are extend into inside inlet manifold,
The tail end of EGR distribution pipes 5 is shut by plug, and waste gas uniformly can be discharged to air inlet by the venthole 4 being distributed on its tube wall
In manifold, enable waste gas uniform with gas mixing in inlet manifold, the internal diameter of EGR distribution pipes 5 should be less than the pipe of silicone tube 6
Footpath, it is ensured that the flow velocity that waste gas is projected, in addition, check-valves can be set in 6 in silicone tube avoids exhaust gas recirculation, existing exhausting waste gas
Manage to ensure its heat resistance, it is generally made using stainless steel and other metal materials, and it has risk of rupture, the EGR of the present embodiment
System considerably reduces the EGT into waste gas exhaust pipe, therefore, can be using flexible preferably silicone tube 6, silicone tube
Inwall provided with ceramic fiber cloth to improve its heat resistance, so that use requirement can be met, it is to avoid risk of rupture, while can be effective
Reduce cost.
In the present embodiment, the EGR distribution pipes 5 are right-angle elbow pipe；The input exhaust on the outside of inlet manifold of EGR distribution pipes 5
In manifold, its export can towards inlet manifold inlet end, this structures of EGR distribution pipes 5 can make just to enter air inlet discrimination
Gas just energy and the waste gas mixing from EGR distribution pipes 5 in pipe, extends the time of gas mixing, is more uniformly distributed mixing.
In the present embodiment, the waste gas after engine combustion flows into exhaust inlet pipe 1 from exhaust side by the air flue in cylinder cap,
Entered again by exhaust inlet pipe 1 and cooled down in cooler 10, the waste gas access inlet end of EGR valve 7 after cooling, EGR valve 7
According to system under the driving of EGR valve motor 11, different opening can be realized as needed, then by the waste gas after cooling be sent into
Gas manifold, being passed through the waste gas of combustion chamber helps to reduce the generation of nitrogen oxides, and beneficial to emission level is improved, cooler 10 can be adopted
Realized with all existing devices that can be cooled down to gas.After waste gas is cooled down through cooler 10, its temperature is greatly lowered,
Thermal shock problem of the high-temp waste gas to EGR valve 7 is solved, the service life of EGR valve 7 is improved, reduced to the material of EGR valve 7
The requirement of heat resistance, to reduction EGR valve 7 totle drilling cost band very big space.
The filter screen for being used for being filtered to waste gas is provided with the present embodiment, in the cooler 10；When unburned hydrocarbon
When oxide (UHC) and/or particulate matter are deposited on the wall of cooler for recycled exhaust gas 10, it may occur that fouling.UHC and PM in cooler for recycled exhaust gas 10
Deposition reduction cooler for recycled exhaust gas 10 validity (for example, heat transfer efficiency), and hinder exhaust stream by cooler 10, because
This, can be in cooler 10 close to its entry position setting filter screen, it is to avoid the inwall of cooler 10 occurs in fouling, the present embodiment, cold
But device 10 is also equipped with filter screen close to its outlet port, and the filter screen can avoid the particulate matter that imperfect combustion is produced in waste gas from entering
Into inlet manifold, it is to avoid carbon distribution occurs for valve.
In the present embodiment, the cooler 10 includes housing, is arranged at the water inlet pipe 9 of the housing bottom and is arranged at institute
State the outlet pipe 2 of case top；The water inlet pipe 9 and outlet pipe 2 mutual spatial vertical arrangement, the cooler 10 of the present embodiment
The flue gas leading for being used for conveying waste gas is provided with housing, flue gas leading can use helical structure, so that increase the flow path of waste gas, it is cold
But water is entered in the cavity between flue gas leading and housing, so as to be cooled down to the waste gas in flue gas leading, in addition, cooling water from
Housing bottom enters, from top outflow so that be entirely full of cooling water between the housing of cooler 10 and flue gas leading all the time, it is ensured that its
Cooling effect.
Scattered injecting type gas recirculation system of the present utility model also includes the hanging plate for being used to fix the cooler 10
3；The hanging plate 3 includes being securable to the connecting plate that engine cylinder covers and is fixed on the connecting plate to be used for and cooler
10 clips 8 coordinated, flange and air inlet that whole egr system passes through the inlet end of exhaust inlet pipe 1 and waste gas exhaust pipe exhaust end
Manifold is connected with each other, and to ensure that whole system is reliably fixed, engine cylinder, which is covered, is provided with EGR mounting posts, and connecting plate passes through spiral shell
The fasteners such as bolt are fixed in EGR mounting posts.
Finally illustrate, above example is only unrestricted to illustrate the technical solution of the utility model, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent substitution, without departing from the objective and model of technical solutions of the utility model
Enclose, it all should cover among right of the present utility model.
Claims (7)
1. a kind of scattered injecting type gas recirculation system, it is characterised in that：Including EGR valve, for guiding waste gas described in
The exhaust inlet pipe of EGR valve and the waste gas exhaust pipe for being connected to the EGR valve exhaust end；Divide on the tube wall of the waste gas exhaust pipe
It is furnished with the venthole for waste gas to be discharged.
2. scattered injecting type gas recirculation system according to claim 1, it is characterised in that：The waste gas exhaust pipe bag
Include silicone tube and be connected to the EGR distribution pipes of the silicone tube port of export, the venthole is distributed in the pipe of the EGR distribution pipes
Wall.
3. scattered injecting type gas recirculation system according to claim 2, it is characterised in that：The EGR distribution pipes are
Right-angle elbow pipe.
4. scattered injecting type gas recirculation system according to claim 3, it is characterised in that：It is also described including being arranged at
Exhaust inlet pipe exports the cooler for being used to cool down the waste gas for flowing into EGR valve between EGR valve import.
5. scattered injecting type gas recirculation system according to claim 4, it is characterised in that：It is provided with the cooler
For the filter screen filtered to waste gas.
6. scattered injecting type gas recirculation system according to claim 5, it is characterised in that：The cooler includes shell
Body, the water inlet pipe for being arranged at the housing bottom and the outlet pipe for being arranged at the case top；The water inlet pipe and outlet pipe
Mutual spatial vertical arrangement.
7. scattered injecting type gas recirculation system according to claim 6, it is characterised in that：Also include being used to fix institute
State the hanging plate of cooler；The hanging plate is including being securable to the connecting plate and be fixed on the connecting plate that engine cylinder is covered
For the clip coordinated with cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621445305.4U CN206360808U (en) | 2016-12-26 | 2016-12-26 | Scattered injecting type gas recirculation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621445305.4U CN206360808U (en) | 2016-12-26 | 2016-12-26 | Scattered injecting type gas recirculation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206360808U true CN206360808U (en) | 2017-07-28 |
Family
ID=59376300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621445305.4U Active CN206360808U (en) | 2016-12-26 | 2016-12-26 | Scattered injecting type gas recirculation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206360808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523200A (en) * | 2016-12-26 | 2017-03-22 | 重庆小康工业集团股份有限公司 | Exhaust gas recirculation system |
-
2016
- 2016-12-26 CN CN201621445305.4U patent/CN206360808U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523200A (en) * | 2016-12-26 | 2017-03-22 | 重庆小康工业集团股份有限公司 | Exhaust gas recirculation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204458107U (en) | The mixing arrangement of gas recirculation system | |
| US8205602B2 (en) | System and method of controlling an amount of condensation in an engine air intake system | |
| CN106368846A (en) | Integrated-designed engine cylinder cover | |
| CN107288743A (en) | A kind of water jet internal combustion engine exhaust system | |
| CN206360808U (en) | Scattered injecting type gas recirculation system | |
| CN204041168U (en) | The combustion-supporting reclaimer of diesel engine particle catcher return flow type oil spout | |
| CN105156235B (en) | A kind of mine anti-explosion electric control EGR system | |
| CN204299729U (en) | A kind of waste gas circulation tubular construction | |
| CN206368756U (en) | First cold mould egr system | |
| CN101526048A (en) | Waste gas high-efficiency cooling system with high EGR efficiency | |
| CN209385219U (en) | A kind of anti-explosion diesel engine exhaust gas purification system | |
| CN205225496U (en) | Realize cold, controllable introducing device of hot EGR | |
| CN205117467U (en) | Nozzle assembly | |
| CN206847375U (en) | A kind of melting furnace pipeline sorption cycle device | |
| CN106523200A (en) | Exhaust gas recirculation system | |
| CN109595062A (en) | A kind of anti-explosion diesel engine exhaust gas purification system | |
| CN214145822U (en) | Cooling device for nitrogen compressor | |
| CN109488418A (en) | A kind of saving emission reduction device for automobile | |
| CN203009103U (en) | Exhaust gas distributing mechanism for exhaust gas recirculation system of diesel engine | |
| CN107096334A (en) | One kind filtering tube sheet and pulse backblowing deashing device | |
| CN106523199A (en) | Cold-end valve EGR system | |
| CN201228597Y (en) | End gas cycling and utilizing apparatus for internal combustion engine | |
| CN106948923A (en) | Water-cooled air-cooled type pre-burning device | |
| KR20110071315A (en) | Egr cooler | |
| CN204476620U (en) | A kind of integrated form intake manifold and the automobile comprising integrated form intake manifold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |