CN207437239U - A kind of variable cooling EGR gas handling systems - Google Patents
A kind of variable cooling EGR gas handling systems Download PDFInfo
- Publication number
- CN207437239U CN207437239U CN201721506963.4U CN201721506963U CN207437239U CN 207437239 U CN207437239 U CN 207437239U CN 201721506963 U CN201721506963 U CN 201721506963U CN 207437239 U CN207437239 U CN 207437239U
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- branch pipe
- egr
- egr gas
- control valve
- branch
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Abstract
The utility model discloses a kind of variable cooling EGR gas handling systems, it is characterised in that：Including engine intake manifold, water cooling charge air cooler, inlet chamber and three-way pipe；Three-way pipe includes three branch pipes：First branch pipe is connected with EGR gas pipelines, and the second branch pipe connection inlet manifold, the 3rd branch pipe connects inlet chamber close to air intake branch one side；An electronic control valve controlled by automobile ECU is respectively arranged in second branch pipe and the 3rd branch pipe, water cooling charge air cooler is housed inside inlet chamber.EGR gases can be cooled down to a greater degree so that control temperature is more accurate, avoids blocking, and reaches preferable cooling effect, increases air input of engine by air, increases power and reduces oil consumption.
Description
Technical field
The utility model is related to a kind of variable volume intake system, and egr system can be cooled down by relating more specifically to one kind（Exhaust
Gas Re-circulation, gas recirculation system, similarly hereinafter）Variable volume intake system.
Background technology
Egr system is a kind of technology for being used for reducing nitrogen oxides in motor vehicle exhaust emission, is to reach motor vehicle exhaust emission
It must be used more than to Europe IV, V standard, and automobile is in combustion, will generate 500 ~ 600 DEG C or so of high temperature, high fever
Exhaust gas recirculation, then emission effect is not achieved, flows back again after need to cooling down to exhaust gas just effective.If not cooled down to EGR gases,
Then hot recirculating exhaust gas will heat air inlet, and in-cylinder combustion temperature is caused significantly to raise, and counteracting EGR reduces NOXEffect,
When serious will also destruction be generated to the structure of engine body.Therefore, it is necessary to the EGR gases of high temperature are cooled down.At present
It is blocked inside cooler for recycled exhaust gas all generally existing coolers in automobile market, it is inadequate to hot EGR gas coolings, it is not achieved
The problem of preferable cooling effect.
Utility model content
The technical problems to be solved in the utility model be for the above-mentioned prior art in the presence of the problem of, propose a kind of knot
Simple, the easy for installation variable cooling EGR gas handling systems of structure, can cool down EGR gases to a greater degree so that control
Temperature is more accurate, avoids blocking, and reaches preferable cooling effect, increases air input of engine by air, increases power and reduces oil consumption.
The technical issues of the utility model, is realized by following technical proposal：
A kind of variable cooling EGR gas handling systems, it is characterised in that：Including engine intake manifold, water cooling charge air cooler, air inlet
Chamber and three-way pipe；Three-way pipe includes three branch pipes：First branch pipe is connected with EGR gas pipelines, and the connection air inlet of the second branch pipe is total
Pipe, the 3rd branch pipe connect inlet chamber close to air intake branch one side；One is respectively arranged with by automobile ECU in second branch pipe and the 3rd branch pipe
The electronic control valve of control, inlet chamber inside are equipped with water cooling charge air cooler.
Further, when the second branch pipe electronic control valve is opened, the 3rd branch pipe electronic control valve is closed, EGR flues
Road is mutually converged with intake header air inlet by the second branch pipe and connected, and is exported and connected via water cooling charge air cooler and inlet manifold jointly
It is logical；When the 3rd branch pipe electronic control valve is opened, the second branch pipe electronic control valve is closed, external EGR gas pipeline passes through the 3rd
Branch pipe connected with inlet chamber after again with inlet manifold's outlet.
Further, temperature sensor is additionally provided with, temperature controller is arranged in charge air cooler, is electrically connected with automobile ECU；
Automobile ECU is electrically connected with electronic control valve.
Further, inlet manifold's port of export is connected with cylinder, and cylinder sets exhaust manifold, and exhaust manifold sets branch pipe to make
For EGR gas pipelines.
Further, three-way pipe is assembled in by flange and mating sealing element between inlet manifold and exhaust manifold.
Further, automobile ECU also with engine speed sensor, throttle opening monitor and EGR sensor,
EGR control valve connects；EGR sensor and EGR control valve are arranged in EGR gas pipelines and enter three-way pipe positioned at EGR gases
The front position of first branch pipe.
Inventor shows in EGR gases that oxygen content is extremely low by result of the test not to be had even, this gas and inlet air
After mixing oxygen concentration in cylinder intake can reduce, the oxygen content lower than air is in burning（Highest）Temperature can reduce,
It can inhibit nitrogen oxides（NOX）Generation.Only EGR's engine under Part load just works.For example, idling and underload
When, NOXConcentration of emission is low, and in order to ensure to stablize burning, EGR is without work.When gas temperature is low in engine cylinder, NOXDischarge
Concentration is relatively low, and in order to ensure normal combustion, EGR is also without work during cold.Engine only its hot lower EGR just into
Row work.In conclusion gas in the jar temperature has a great impact to EGR, pass through the temperature sensor inside water cooling charge air cooler
Real-time temperature can be accurately obtained, the cooling capacity of water cooling charge air cooler, therefore, this practicality can be judged by the numerical value of real-time temperature
It is new to devise the device that the utility model has the advantages of simple structure on this basis, for further cooling down EGR gases.
Compared to more traditional cooling system for recycled exhaust gas, the utility model can cool down EGR gases to a greater degree so that
It controls temperature more accurate, the higher EGR gases of temperature is imported into three-way pipe, the opening and closing degree of control valve is EGR gases
It is sent into the water cooling charge air cooler being integrated in inlet manifold to be cooled down, utilizes the temperature installed at inlet manifold's internal water cooling charge air cooler
Sensor is spent to detect the temperature of EGR gases, the fresh sky for entering the not high EGR gas mixings of temperature again by three-way pipe
Gas is sent directly into cylinder, and three-way pipe directly can be assembled in inlet manifold and exhaust discrimination by flange and its mating sealing element
Guan Shang.This utility model component is few, simple in structure, it can be achieved that Fast Installation, realizes cooling EGR gases to some extent, increase
Air input of engine by air can not only increase power, and can reduce oil consumption.
Description of the drawings
Fig. 1 is the variable cooling EGR gas handling system theory structure block diagrams of the utility model.
Fig. 2 be the utility model variable cooling EGR gas handling systems in threeway tube portion partial schematic diagram.
Fig. 3 is the A direction views of Fig. 2.
Fig. 4 is the B partial enlarged views of Fig. 2.
Fig. 5 is the application structure figure of the variable cooling EGR gas handling systems of the utility model.
Fig. 6 is the hardware module block diagram of the variable cooling EGR gas handling systems of the utility model.
Specific embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
It is the variable cooling EGR gas handling systems implemented according to the utility model as shown in Figure 1, to increase air inflow, increases
Add power and reduce oil consumption.Including：Three-way pipe 1, inlet chamber 2, water cooling charge air cooler 3, inlet manifold 4 and air intake branch 6；Air inlet
Branch pipe 6 is connected to the 2 place end of inlet chamber of inlet manifold 4 as the port of export, inlet manifold 4 and air intake branch 6 be called jointly into
Gas manifold；Three-way pipe 1, inlet chamber 2 and water cooling charge air cooler 3 are included in Fig. 2 institutes, from the schematic diagram observed by A arrow directions such as
It is mainly the part that the branch pipe III of three-way pipe 1 and inlet chamber 2 pass through flanged joint shown in Fig. 3.Fig. 4 is in three-way pipe 1 at B
The partial enlarged view that III internal electron control valve 5 of branch pipe is set in branch pipe.
The electronic control valve 5 of an automobile ECU control is respectively provided with inside two exhaust branch pipes II, III of three-way pipe 1.
The branch pipe I of three-way pipe 1 accesses EGR gases as admission line；Branch pipe II connect inlet manifold 4 be used for by EGR gases be sent into
In gas manifold 4；Branch pipe III passes through flanged joint inlet chamber 2（As in Fig. 2 at A）, for EGR gases to be sent into inlet chamber 2.Water
Cold charge air cooler 3 is mounted in inlet chamber 2, and temperature sensor is equipped in water cooling charge air cooler 3.
Can be introduced into water cooling charge air cooler 3 through cooler for recycled exhaust gas EGR gases after cooling, further cooling after into
In air cavity 2；Can not also water cooled charge air cooler 3 be directly entered cylinder, this depend on charge air cooler 3 inside temperature sensing
The temperature of device feedback.When 3 cooling capacity abundance of water cooling charge air cooler, control module（Such as automobile ECU）Control the electricity in branch pipe II
Sub- control valve 5 is opened, and the switching electronic control valve 5 in branch pipe III is closed, and EGR gases are introduced into water cooling charge air cooler 3, Ke Yijin
One step cooling gas temperature, increase power and reduction oil consumption；When charge air cooler cooling capacity deficiency, the switch valve in branch pipe II
Electronic control valve 5 is closed, and the electronic control valve 5 in branch pipe III is opened, and EGR gases separately flow into after being directly entered inlet chamber 2
Each cylinder.
Fig. 5 is the exemplary plot that the utility model is combined with cylinder 7.The outlet side of air intake branch 6 is connected with cylinder 7,
The tail gas generated in cylinder 7 after mixed combustion is discharged by exhaust manifold, the tail gas of exhaust manifold some with three-way pipe 1
EGR gas service pipes（Namely branch pipe I）It connects, EGR control valve is set in branch pipe I, for controlling EGR gas flows, and then control
Make the ratio between the air inlet total amount of the exhausted air quantity of recycling with sucking cylinder（EGR rate）.
Fig. 6 show the hardware control module figure of the utility model variable cooling EGR gas handling systems.Temperature controller is set
In water cooling charge air cooler 3, with control module（ECU）Electrical connection；Control module is electrically connected with electronic control valve 5.Control module is also
It is connected with engine speed sensor, throttle opening monitor and EGR sensor, EGR control valve；EGR sensor（Not
Diagram）Three-way pipe EGR gas inlet pipes are arranged on EGR control valve（Namely branch pipe I）Before.
During start-up operation, whole system works as follows：
Step 1：Control module receives engine rotational speed signal, throttle opening amount signal, water cooling charge air cooler internal gas temperature
Spend signal and EGR sensor signal；
Step 2：The signal that EGR sensor is transmitted through coming by control module, i.e. EGR rate（Exhausted air quantity and sucking for recycling
The ratio between air inlet total amount of cylinder）, feed back in electronic control type EGR valve, the exhaust gas that mixed combustion generates in cylinder 7 enters row
Gas manifold, the portion gas in exhaust manifold enter three-way pipe 1 by electronic control type EGR valve and are recycled；
Step 3：The gas temperature signal that control module is sent according to the temperature sensor inside water cooling charge air cooler 3, to electricity
Sub- 5 firing order of control valve determines that EGR gases and fresh air are mixed into the cooling of water cooling charge air cooler and enter back into inlet chamber afterwards
2 or gaseous mixture be directly entered inlet chamber 2, the gas come out from inlet chamber 2 is directly entered cylinder 7 by air intake branch 6 and carries out
Mixed combustion, then exhaust gas there is part to continue to recycle by three-way pipe 1.
Those skilled in the art of the present invention can do described specific embodiment various
Modification or supplement substitute in a similar way, but without departing from the spirit of the present application or surmount appended right will
Seek scope defined in book.
Claims (6)
1. a kind of variable cooling EGR gas handling systems, it is characterised in that：Including engine intake manifold, water cooling charge air cooler, air inlet
Chamber and three-way pipe；Three-way pipe includes three branch pipes：First branch pipe is connected with EGR gas pipelines, and the connection air inlet of the second branch pipe is total
Pipe, the 3rd branch pipe connect inlet chamber close to air intake branch one side；One is respectively arranged with by automobile ECU in second branch pipe and the 3rd branch pipe
The electronic control valve of control, inlet chamber inside are equipped with water cooling charge air cooler.
2. variable cooling EGR gas handling systems according to claim 1, it is characterised in that：When the second branch pipe electronic control valve
It opens, when the 3rd branch pipe electronic control valve is closed, EGR gas pipelines pass through the second branch pipe and intake header the air inlet mutually company of convergence
It is logical, and jointly via water cooling charge air cooler and inlet manifold's outlet；When the unlatching of the 3rd branch pipe electronic control valve, the second branch pipe electricity
When sub- control valve is closed, external EGR gas pipeline connected by the 3rd branch pipe with inlet chamber after again with inlet manifold's outlet.
3. variable cooling EGR gas handling systems according to claim 1 or 2, it is characterised in that：It is additionally provided with temperature sensing
Device, temperature controller are arranged in charge air cooler, are electrically connected with automobile ECU；Automobile ECU is electrically connected with electronic control valve.
4. variable cooling EGR gas handling systems according to claim 3, it is characterised in that：Inlet manifold's port of export and cylinder
Connection, cylinder set exhaust manifold, and exhaust manifold sets branch pipe as EGR gas pipelines.
5. variable cooling EGR gas handling systems according to claim 4, it is characterised in that：Three-way pipe passes through flange and mating
Sealing element is assembled between inlet manifold and exhaust manifold.
6. variable cooling EGR gas handling systems according to claim 5, it is characterised in that：Automobile ECU also with engine speed
Sensor, throttle opening monitor and EGR sensor, EGR control valve connection；EGR sensor and EGR control valve are set
Enter the front position of the first branch pipe of three-way pipe in EGR gas pipelines and positioned at EGR gases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721506963.4U CN207437239U (en) | 2017-11-13 | 2017-11-13 | A kind of variable cooling EGR gas handling systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721506963.4U CN207437239U (en) | 2017-11-13 | 2017-11-13 | A kind of variable cooling EGR gas handling systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207437239U true CN207437239U (en) | 2018-06-01 |
Family
ID=62289177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721506963.4U Expired - Fee Related CN207437239U (en) | 2017-11-13 | 2017-11-13 | A kind of variable cooling EGR gas handling systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207437239U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740739A (en) * | 2017-11-13 | 2018-02-27 | 武汉理工大学 | Variable cooling EGR gas handling systems and the waste gas processing method based on it |
| CN111577494A (en) * | 2020-05-15 | 2020-08-25 | 浙江博弈科技股份有限公司 | Intake manifold with waste gas inlet hole |
-
2017
- 2017-11-13 CN CN201721506963.4U patent/CN207437239U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740739A (en) * | 2017-11-13 | 2018-02-27 | 武汉理工大学 | Variable cooling EGR gas handling systems and the waste gas processing method based on it |
| CN111577494A (en) * | 2020-05-15 | 2020-08-25 | 浙江博弈科技股份有限公司 | Intake manifold with waste gas inlet hole |
| CN111577494B (en) * | 2020-05-15 | 2021-06-25 | 浙江博弈科技股份有限公司 | Intake manifold with waste gas inlet hole |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 Termination date: 20211113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |