CN204299731U - A kind of engine EGR cover plate and there is its engine - Google Patents
A kind of engine EGR cover plate and there is its engine Download PDFInfo
- Publication number
- CN204299731U CN204299731U CN201420724104.2U CN201420724104U CN204299731U CN 204299731 U CN204299731 U CN 204299731U CN 201420724104 U CN201420724104 U CN 201420724104U CN 204299731 U CN204299731 U CN 204299731U
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- China
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- engine
- cover plate
- egr
- main channel
- subaisle
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- 239000002912 waste gas Substances 0.000 claims abstract description 38
- 239000007789 gas Substances 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims description 10
- 238000005266 casting Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model discloses a kind of engine EGR cover plate and there is its engine, described EGR cover plate inside is provided with the main channel and subaisle that extend along its length, and the sidewall at main channel place is provided with two gas outlets of wherein two air intake ducts in an air inlet allowing waste gas enter and two cylinder head allowing waste gas enter engine, the sidewall at subaisle place is provided with two gas outlets allowing waste gas enter cylinder head two other air intake duct interior of engine, and main channel is also communicated with subaisle.This layout of this EGR cover plate can ensure that the waste gas operation length of four air intake ducts entered in engine cylinder cap is more or less the same, namely the exhaust gas flow difference flowing into air intake duct is less, make the EGR waste gas of coming from the drainage of engine exhaust road can be assigned to every air intake duct of cylinder head uniformly, thus be conducive to engine performance adjustment, be conducive to the oil consumption reducing engine.
Description
Technical field
The utility model belongs to technical field of engines, and specifically, the utility model relates to a kind of engine EGR cover plate and has its engine.
Background technology
The poisonous and hazardous mass emissions that mankind's activity or natural process produce, to the mankind, biological and object causes high risks, motor vehicle exhaust emission becomes one of primary pollution source, along with the development of economic technology, automobile quantity constantly increases, automobile emission regulation is also more and more stricter, and containing multiple pernicious gas in vehicular engine emission, this has become the main source of urban atmospheric pollution, especially the injury of oxynitrides to human body in motor vehicle exhaust emission thing is very big, so the oxynitrides reduced in motor vehicle exhaust emission thing also becomes the main direction of studying of vehicular engine.
EGR (the Exhaust Gas Recirculation) EGR Technology that adopts current many engines reduces the oxynitrides in emissions from engines, egr system is introduced inlet manifold or air intake duct and fresh air by a small amount of exhaust and is mixed into cylinder and participates in burning, temperature when reducing on the one hand burning in cylinder, reduce the content of cylinder oxygen on the other hand, because oxynitrides generates under high-temperature oxygen-enriched condition, therefore inhibit the generation of oxynitrides, thus reduce the oxynitrides content in waste gas.
For reducing EGR exhaust passageway arrangement space, EGR channel is integrated in cylinder cap inside by many engine application, this arrangement also can be applicable in convertible engine, less on the layout impact of engine; EGR channel is integrated in cylinder cap inside and need coordinates EGR cover plate that waste gas is introduced air intake duct, can waste gas enter air intake duct uniformly and depend on access arrangements mode in EGR cover plate, so the layout of EGR cover plate internal path also just becomes the design key of EGR cover plate, EGR waste gas enters air intake duct uniformly also can reduce engine consumption, improve EGR rate, be conducive to engine performance adjustment, but current EGR cover plate can't realize this effect.
Utility model content
The utility model provides a kind of engine EGR cover plate, and object is every air intake duct that the EGR waste gas drainage of engine exhaust road can come is assigned to cylinder head uniformly, is beneficial to the adjustment of engine, reduces oil consumption.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of engine EGR cover plate, inside is provided with the main channel and subaisle that extend along its length, and the sidewall at main channel place is provided with two gas outlets of wherein two air intake ducts in an air inlet allowing waste gas enter and two cylinder head allowing waste gas enter engine, the sidewall at subaisle place is provided with two gas outlets allowing waste gas enter cylinder head two other air intake duct interior of engine, and main channel is also communicated with subaisle.
Have a dividing plate between described main channel and described subaisle, dividing plate is provided with the passage for being communicated with subaisle main channel.
Described main channel is extend to the other end from one end of described EGR cover plate, and the length of main channel is greater than the length of described subaisle.
Four described gas outlets are positioned at the same side of described air inlet.
Two gas outlets at described subaisle place are between described air inlet and two gas outlets at described main channel place.
Described main channel and described subaisle are integrated casting.
The utility model also provides a kind of engine, comprises cylinder head, and also comprise above-mentioned EGR cover plate, EGR cover plate is connected with cylinder head by bolt in the bottom of described cylinder head.
Be provided with in described cylinder head and be communicated with the air inlet of described EGR cover plate and make waste gas flow into the EGR cover plate entrance of described main channel.
EGR cover plate pad is provided with between described EGR cover plate and described cylinder head.
This engine also comprises and to be positioned at bottom described EGR cover plate and for the sealing plate by described main channel and the sealing of described subaisle.
Engine EGR cover plate of the present utility model, by arranging main channel and subaisle, and respectively two gas outlets are set in main channel and subaisle place, this layout can ensure that the waste gas operation length of four air intake ducts entered in engine cylinder cap is more or less the same, namely the exhaust gas flow difference flowing into air intake duct is less, make the EGR waste gas of coming from the drainage of engine exhaust road can be assigned to every air intake duct of cylinder head uniformly, thus be conducive to engine performance adjustment, be conducive to the oil consumption reducing engine.
Accompanying drawing explanation
Fig. 1 is the partial structurtes schematic diagram of engine cylinder cap;
Fig. 2 is the decomposing schematic representation of the parts such as engine cylinder cap and EGR cover plate, pad and sealing plate;
Fig. 3 is the structural representation of EGR cover plate;
Mark in above-mentioned figure is:
1, exhaust duct; 2, EGR waste gas cylinder cap inner passage; 3, EGR valve entrance; 4, EGR valve outlet; 5, cylinder head; 6, EGR cover plate entrance; 7, EGR cover plate pad; 8, EGR cover plate; 81, main channel; 82, subaisle; 83, air inlet; 84, the first gas outlet; 85, the second gas outlet; 86, the 3rd gas outlet; 87, the 4th gas outlet; 88, dividing plate; 89, passage; 9, cover plate bolt; 10, sealing plate; 11, EGR gas inlet road entrance.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, be described in further detail detailed description of the invention of the present utility model, object helps those skilled in the art to have more complete, accurate and deep understanding to design of the present utility model, technical scheme, and contribute to its enforcement.
As shown in Figures 2 and 3, a kind of engine EGR cover plate of the utility model, its inside is provided with the main channel 81 and subaisle 82 that extend along its length, and the sidewall at main channel 81 place is provided with two gas outlets of wherein two air intake ducts in an air inlet allowing waste gas enter 83 and two cylinder head 5 allowing waste gas enter engine, these two gas outlets are the first gas outlet 84 and the second gas outlet 85, first cylinder air intake duct of the corresponding engine cylinder cap 5 of difference and the second cylinder air intake duct, the sidewall at subaisle 82 place is provided with two gas outlets allowing waste gas enter cylinder head 5 two other air intake duct interior of engine, these two gas outlets are the 3rd gas outlet 86 and the 4th gas outlet 87, 3rd cylinder air intake duct of the corresponding engine cylinder cap 5 of difference and the 4th cylinder air intake duct.Main channel 81 is also communicated with subaisle 82, and the waste gas entering main channel 81 is flowed in subaisle 82.
Specifically, as shown in Figure 3, main channel 81 and subaisle 82 are the elongated slot arranged on the bottom surface of EGR cover plate 8, EGR cover plate 8 is strip, main channel 81 is extend to the other end from one end of EGR cover plate 8, the length of main channel 81 is greater than the length of subaisle 82, and main channel 81 and subaisle 82 parallel.
As shown in Figure 3, have a dividing plate 88 between main channel 81 and subaisle 82, dividing plate 88 is provided with a passage 89 for being communicated with subaisle 82 main channel 81.EGR waste gas in cylinder head 5 enters the main channel 81 in EGR cover plate 8 through EGR cover plate entrance 6, EGR waste gas is shunted by main channel 81, a part enters subaisle 82 through passage 89, 3rd cylinder air intake duct of the gas primary responsibility supply cylinder lid 5 of subaisle 82 and the 4th cylinder air intake duct, the other one section of primary responsibility supply cylinder lid 5 first cylinder air intake duct in main channel 81 and the second cylinder air intake duct, this kind of layout can ensure that the waste gas operation length entering air intake duct is more or less the same, namely the exhaust gas flow difference flowing into air intake duct is less, be conducive to engine performance adjustment, very large benefit is had to reduction fuel oil consumption.
As shown in Figure 3, four gas outlets in EGR cover plate 8 are positioned at the same side of air inlet 83, and two gas outlets at subaisle 82 place are between air inlet 83 and two gas outlets at main channel 81 place.
EGR cover plate 8 adopts aluminum alloy materials high-pressure casting to form, and main channel 81 and the subaisle 82 of EGR cover plate 8 inside are that one-step casting is shaping, and EGR cover plate 8 structure of formation is simple, and cost is low, and quality is light, is easy to install.
The utility model also provides a kind of engine, and as depicted in figs. 1 and 2, it comprises cylinder head 5, and EGR cover plate 8, the EGR cover plate 8 also comprising said structure is connected with cylinder head 5 by bolt in the bottom of cylinder head 5.Also be provided with in cylinder head 5 and be communicated with the air inlet 83 of EGR cover plate 8 and make EGR waste gas streams enter EGR cover plate entrance 6 and the EGR waste gas cylinder cap inner passage 2 of main channel 81.
As depicted in figs. 1 and 2, EGR waste gas directly enters EGR waste gas cylinder cap inner passage 2 through cylinder head the 4th cylinder exhaust duct 1 precasting branch road, and (EGR waste gas cylinder cap inner passage 2 is for pre-type casting moulding and through cylinder head cooling jacket, EGR EGT can be reduced), EGR valve is entered again by EGR valve entrance 3, entered the air inlet side exhaust steam passage of cylinder head 5 by EGR valve outlet 4 after EGR valve regulable control, waste gas enters EGR cover plate 8 from EGR cover plate entrance 6, each EGR gas inlet road entrance 11 of cylinder head 5 is dispensed a gas onto (as shown in Figure 2 by the main channel 81 of EGR cover plate 8 and subaisle 82, turning left from the right side is the 1-4 cylinder of engine successively), enter air intake duct to mix with fresh air and enter combustion chamber again and participate in burning.
EGR waste gas cylinder cap inner passage 2 precasting of this engine is inner in cylinder head 5, greatly saves the arrangement space of complete machine, is conducive to convertible engine application, has change little, save the features such as space cost is low.EGR waste gas cylinder cap inner passage 2 is through the water jacket in cylinder head 5 in addition, EGR waste gas is cooled, can reduce the temperature of EGR waste gas like this, improves the charging efficiency of engine.
As shown in Figure 2, adopt the EGR cover plate pad 7 of steel to seal between EGR cover plate 8 and cylinder head 5, this EGR cover plate pad 7 surrounding adopts stamping forming sealed muscle to seal, and this kind of sealing means can high temperature high voltage resistant, and reliability is better.The sealing plate 10 of EGR cover plate 8 lower end steel carries out shutoff, and adopt silica gel to seal between EGR cover plate 8 and sealing plate 10, this kind of sealing means can make up aluminum EGR cover plate 8 and be out of shape serious problem, finally with 4 M6 cover plate bolts 9, EGR cover plate pad 7, EGR cover plate 8 and seal cover board are fixed in cylinder head 5, cover plate bolt 9 adopts band spring shim structure, can effectively loosen, this kind of Standard is simple, is easy to arrange.
By reference to the accompanying drawings the utility model is exemplarily described above; 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 technical scheme is carried out; or design of the present utility model and technical scheme directly applied to other occasion, all within protection domain of the present utility model without to improve.
Claims (10)
1. an engine EGR cover plate, it is characterized in that: inside is provided with the main channel and subaisle that extend along its length, and the sidewall at main channel place is provided with two gas outlets of wherein two air intake ducts in an air inlet allowing waste gas enter and two cylinder head allowing waste gas enter engine, the sidewall at subaisle place is provided with two gas outlets allowing waste gas enter cylinder head two other air intake duct interior of engine, and main channel is also communicated with subaisle.
2. engine EGR cover plate according to claim 1, it is characterized in that: have a dividing plate between described main channel and described subaisle, dividing plate is provided with the passage for being communicated with subaisle main channel.
3. engine EGR cover plate according to claim 1 and 2, is characterized in that: described main channel is extend to the other end from one end of described EGR cover plate, and the length of main channel is greater than the length of described subaisle.
4. engine EGR cover plate according to claim 3, is characterized in that: four described gas outlets are positioned at the same side of described air inlet.
5. engine EGR cover plate according to claim 4, is characterized in that: two gas outlets at described subaisle place are between described air inlet and two gas outlets at described main channel place.
6. engine EGR cover plate according to claim 5, is characterized in that: described main channel and described subaisle are integrated casting.
7. an engine, comprises cylinder head, it is characterized in that: also comprise the arbitrary described EGR cover plate of claim 1 to 6, EGR cover plate is connected with cylinder head by bolt in the bottom of described cylinder head.
8. engine according to claim 7, is characterized in that: be provided with in described cylinder head and be communicated with the air inlet of described EGR cover plate and make waste gas flow into the EGR cover plate entrance of described main channel.
9. engine according to claim 8, is characterized in that: be provided with EGR cover plate pad between described EGR cover plate and described cylinder head.
10. engine according to claim 9, is characterized in that: also comprise and to be positioned at bottom described EGR cover plate and for the sealing plate by described main channel and the sealing of described subaisle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420724104.2U CN204299731U (en) | 2014-11-26 | 2014-11-26 | A kind of engine EGR cover plate and there is its engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420724104.2U CN204299731U (en) | 2014-11-26 | 2014-11-26 | A kind of engine EGR cover plate and there is its engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299731U true CN204299731U (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420724104.2U Active CN204299731U (en) | 2014-11-26 | 2014-11-26 | A kind of engine EGR cover plate and there is its engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605622A (en) * | 2017-10-20 | 2018-01-19 | 奇瑞汽车股份有限公司 | Highly integrated EGR system |
-
2014
- 2014-11-26 CN CN201420724104.2U patent/CN204299731U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605622A (en) * | 2017-10-20 | 2018-01-19 | 奇瑞汽车股份有限公司 | Highly integrated EGR system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |