CN204627799U - EGR cooling structure - Google Patents
EGR cooling structure Download PDFInfo
- Publication number
- CN204627799U CN204627799U CN201520238883.XU CN201520238883U CN204627799U CN 204627799 U CN204627799 U CN 204627799U CN 201520238883 U CN201520238883 U CN 201520238883U CN 204627799 U CN204627799 U CN 204627799U
- Authority
- CN
- China
- Prior art keywords
- egr valve
- attachment face
- egr
- cylinder cap
- waste gas
- 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.)
- Expired - Fee Related
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 18
- 239000002912 waste gas Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model relates to a kind of EGR cooling structure, belong to the technical field of engine design and manufacture, it comprises cylinder cap, and described cylinder cap is provided with discharge manifold attachment face and EGR valve attachment face, described EGR valve attachment face is provided with EGR valve, and EGR pipe is connected to described EGR valve; Have in described cylinder cap and originate in the internal waste gas passage of discharge manifold attachment face to described EGR valve attachment face, and in the side of described internal waste gas passages downstream, described EGR valve attachment face place being provided with water outlet base.Cooling structure described in the utility model reduces the exhaust gas temperature entering intake manifold, avoids EGR valve body running temperature too high, extends valve body working life, and also reduces the discharge of harmful gas especially NOx, improves engine performance.
Description
Technical field
The utility model belongs to the technical field of engine design and manufacture, and in particular, the utility model relates to a kind of EGR cooling structure.
Background technique
In the prior art, in order to reduce the combustion temperature of diesel engine and suppress the generation of NOx, there will be a known the exhaust gas recirculation system portion gas of discharging from motor being supplied to air inlet path, i.e. so-called EGR (Exhaust-Gas Recirulation: Exhaust Gas recirculation) system.In the prior art, the motor of band EGR technology does not have EGR cooling scheme usually, and waste gas directly enters intake manifold after being transported to EGR valve by gas exhaust manifold by EGR pipe road.The waste gas of high temperature adds intake temperature, reduces combustion efficiency, therefore also reduces fuel economy, improves combustion temperature simultaneously, thus can not obtain the effect reducing NOx discharge fully.
Model utility content
In order to solve above-mentioned technical problem of the prior art, the purpose of this utility model is to provide a kind of EGR cooling structure.
To achieve these goals, the utility model have employed following technological scheme:
A kind of EGR cooling structure, comprises cylinder cap, it is characterized in that: described cylinder cap is provided with discharge manifold attachment face and EGR valve attachment face, described EGR valve attachment face is provided with EGR valve, and EGR pipe is connected to described EGR valve; Have in described cylinder cap and originate in the internal waste gas passage of discharge manifold attachment face to described EGR valve attachment face, and in the side of described internal waste gas passages downstream, described EGR valve attachment face place being provided with water outlet base.
Wherein, the cylinder cap of the opposite side of described internal waste gas passages downstream is provided with thermostat housing.
Compared with prior art, EGR cooling structure described in the utility model has following beneficial effect:
1. the exhaust gas temperature entering intake manifold is reduced.
2. avoid EGR valve body running temperature too high, extend valve body working life.
3. reduce the discharge of harmful gas especially NOx, improve engine performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the EGR cooling structure of embodiment 1.
Fig. 2 is the engine structure schematic diagram without EGR cooling scheme in prior art.
Fig. 3 is the engine structure schematic diagram with embodiment 1EGR cooling structure.
Embodiment
Be further elaborated EGR cooling structure described in the utility model below with reference to specific embodiment, to help, those skilled in the art conceives model utility of the present utility model, technological scheme has more complete, accurate and deep understanding.
Embodiment 1
As shown in Figure 1, EGR cooling structure described in the present embodiment, comprises cylinder cap 1, and described cylinder cap 1 is provided with discharge manifold attachment face 2 and EGR valve attachment face 6, described EGR valve attachment face is provided with EGR valve (not shown), and EGR pipe 7 is connected to described EGR valve; Have in described cylinder cap 1 and originate in the internal waste gas passage 3 of discharge manifold attachment face 2 to described EGR valve attachment face 6, and in the side in described internal waste gas passage 3 downstream, described EGR valve attachment face 6 place is provided with dotted line in water outlet base 4, figure and is depicted as the trend of waste gas.In addition, the cylinder cap of the opposite side in described internal waste gas passage 3 downstream is provided with thermostat housing 5.Carry out exchange heat by water outlet base and cooling liquid, cooled waste gas enters intake manifold by EGR valve via EGR pipe and participates in burning.
As shown in Figure 2, the motor of band EGR technology of the prior art does not have EGR cooling scheme, and waste gas directly enters intake manifold 13 after being transported to EGR valve 14 by gas exhaust manifold 11 by EGR pipe 12.The waste gas of high temperature adds intake temperature, reduces combustion efficiency, therefore also reduces fuel economy, improves combustion temperature simultaneously, makes again the discharge amount of NOx increase.
As shown in Figure 3, for adopting the engine structure of embodiment's cooling scheme.By exhaust steam passage and EGR valve mounting platform are integrated in water outlet base 21 place, make waste gas streams cooled when water outlet base.The high-temp waste gas that discharge manifold 23 is discharged flows to by the passage being integrated in cylinder cap inside the EGR valve 24 being integrated in water outlet base, carry out exchange heat with the cooling liquid at water outlet base place, the waste gas after cooled enters intake manifold 25 by EGR valve 24 by EGR pipe 22 and participates in burning simultaneously.This scheme makes intake temperature improve, thus the combustion temperature reduced, decrease the discharge of harmful gas, improve engine performance.
For the ordinary skill in the art; specific embodiment is just exemplarily described the utility model; obvious the utility model specific implementation is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technological scheme is carried out; or design of the present utility model and technological scheme directly applied to other occasion, all within protection domain of the present utility model without to improve.
Claims (2)
1. an EGR cooling structure, comprises cylinder cap, it is characterized in that: described cylinder cap is provided with discharge manifold attachment face and EGR valve attachment face, described EGR valve attachment face is provided with EGR valve, and EGR pipe is connected to described EGR valve; Have in described cylinder cap and originate in the internal waste gas passage of discharge manifold attachment face to described EGR valve attachment face, and in the side of described internal waste gas passages downstream, described EGR valve attachment face place being provided with water outlet base.
2. EGR cooling structure according to claim 1, is characterized in that: the cylinder cap of the opposite side of described internal waste gas passages downstream is provided with thermostat housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520238883.XU CN204627799U (en) | 2015-04-17 | 2015-04-17 | EGR cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520238883.XU CN204627799U (en) | 2015-04-17 | 2015-04-17 | EGR cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204627799U true CN204627799U (en) | 2015-09-09 |
Family
ID=54046837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520238883.XU Expired - Fee Related CN204627799U (en) | 2015-04-17 | 2015-04-17 | EGR cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204627799U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747323A (en) * | 2015-04-17 | 2015-07-01 | 阿尔特汽车技术股份有限公司 | EGR cooling structure |
| CN113389663A (en) * | 2021-08-05 | 2021-09-14 | 重庆鑫源动力制造有限公司 | EGR pipeline system for engine |
-
2015
- 2015-04-17 CN CN201520238883.XU patent/CN204627799U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747323A (en) * | 2015-04-17 | 2015-07-01 | 阿尔特汽车技术股份有限公司 | EGR cooling structure |
| CN113389663A (en) * | 2021-08-05 | 2021-09-14 | 重庆鑫源动力制造有限公司 | EGR pipeline system for engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |