CN201778916U - Engine EGR mixing tube - Google Patents
Engine EGR mixing tube Download PDFInfo
- Publication number
- CN201778916U CN201778916U CN2010202992780U CN201020299278U CN201778916U CN 201778916 U CN201778916 U CN 201778916U CN 2010202992780 U CN2010202992780 U CN 2010202992780U CN 201020299278 U CN201020299278 U CN 201020299278U CN 201778916 U CN201778916 U CN 201778916U
- Authority
- CN
- China
- Prior art keywords
- mixing tube
- mixing
- tube
- air inlet
- gas inlet
- 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
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- 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
Abstract
The utility model discloses an engine EGR mixing tube, which is used for discharging waste gas of an engine into a gas inlet adapter, perpendicular to the gas inlet adapter, inserted into a hole arranged at the corresponding position of the gas inlet adapter and then fixed. The mixing tube extends to the position of 1/4-1/2 diameter of the gas inlet adapter, a plurality of mixing pipe holes are uniformly arranged at the tail end of the inserted portion of the mixing tube, and the diameter of a position of the gas inlet adapter inserted with the mixing tube is larger than that of the other positions of the gas inlet adapter, so that air flow circulation area can not be reduced when the mixing tube is inserted in the gas inlet adapter. The ERG mixing tube can effectively increase mixing efficiency and uniformity so that combustion performance and other emission property of the engine can be improved correspondingly.
Description
Technical field
The utility model relates to the motor car engine field, particularly a kind of engine EGR waste gas mixing tube.
Background technique
Raising day by day along with the engine exhaust emission requirement, EGR (Exhaust Gas Recycle " exhaust gas recirculation ") scheme is an effective way that reduces noxious emission, for this reason, EGR composite rate and mixed effect thereof to motor have proposed high requirement, it generally is directly to mix with waste gas by open an EGR interface on air inlet tube that the air of present cleaning mixes with waste gas, promptly on body, open an interface that is used to mix, directly gas is incorporated on the air inlet tube, as shown in Figure 1, α is the angle between clean air air flow direction and off-gas flows flow to.
When α＜90 °, the layout of body adopt exhaust flow to clean air flow to forming one less than 90 ° angle, this mode causes the gas away from the waste gas jointing to mix relatively poor, finally cause the gas mixing efficiency low, influence each cylinder intake uniformity of motor, and then influence engine performance.
When α＞90 °, the layout of body adopts exhaust flow to flow to flowing in opposite directions with clean air, and there is clean air and the off-gas flows existence defective that liquidates in this scheme, and it is lower to cause EGR to lead, and influences the emission effect of motor.
The model utility content
The utility model is in order to overcome defective in the above-mentioned prior art, can obtain the higher mixing efficiency and the uniformity of mixing under the less relatively condition of intake resistance.
Engine EGR mixing tube of the present utility model is used for engine exhaust is entered air inlet tube, and mixing tube is vertical with air inlet tube to be provided with, and mixing tube is inserted in the hole of the corresponding position of air inlet tube offering and fixing.
Preferably, mixing tube extends to the caliber place of air inlet tube 1/4 to 1/2.
Preferably, the end of mixing tube insertion portion evenly is provided with a plurality of mixing pores.
Preferably, air inlet tube is at the caliber of the mixing tube insertion position caliber greater than other position of air inlet tube, and the airflow area that causes with the insertion of avoiding because of mixing tube reduces.
Compared with prior art, the utlity model has following beneficial effect:
1, air inlet tube is vertical with mixing tube is provided with, and can avoid air-flow to liquidate;
2, mixing tube stretches to air inlet tube 1/4 to 1/2 caliber place, more waste gas can be incorporated into away from the exhaust gas entrance end, improves mixed effect;
3, the mixing tube end is provided with a plurality of even mixing pores, and outflow part waste gas is fully mixed with clean air, improves mixing efficiency;
4, increase the air inlet tube caliber that the mixing tube place is installed, can increase the circulation area of the body at this place, reduce because mixing tube extend into the influence that the resistance that causes in the air inlet tube increases.
5, simple in structure, can be under the constant condition of air inlet tube change mixing tube length and the quantity of mixing pore adjust the EGR mixed effect.
Description of drawings
Fig. 1 is an EGR mixing tube structural representation of the prior art;
Fig. 2 is the utility model engine EGR mixing tube structural representation.
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
The 1-air inlet tube, 2-mixing tube, 21-mixing pore.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subjected to the restriction of embodiment.
As shown in Figure 2, EGR mixing tube of the present utility model adopts fabricated structure, promptly is made up of air inlet tube 1, mixing tube 2 two-part.Hole of processing on air inlet tube 1, processing dimension is suitable according to the corresponding size of mixing tube, be directly installed on the air inlet tube 1 mixing tube 2 also fixing, the end of mixing tube 2 directly extends into about 1/4 to 1/2 caliber place, inside of air inlet tube, the clean air in the air inlet tube 1 and the waste gas of engine emission are mixed, and the EGR that does not influence air inlet tube leads (being ER EGR Rate), establishes a plurality of mixing pores 21 in the tail end of mixing tube 2.Adopt simultaneously to strengthen mixing tube place air inlet tube caliber mode is being installed, increase the circulation area of the body at this place, reduce because mixing tube extend into the influence that the resistance that causes in the air inlet tube increases.
More than disclosed only be a specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.
Claims (4)
1. an engine EGR mixing tube is used for engine exhaust is entered air inlet tube, it is characterized in that, described mixing tube is vertical with air inlet tube to be provided with, and mixing tube is inserted in the hole of the corresponding position of air inlet tube offering and fixing.
2. engine EGR mixing tube according to claim 1 is characterized in that, described mixing tube extends to the caliber place of air inlet tube 1/4 to 1/2.
3. engine EGR mixing tube according to claim 1 and 2 is characterized in that, the end of described mixing tube insertion portion evenly is provided with a plurality of mixing pores.
4. engine EGR mixing tube according to claim 1 and 2 is characterized in that, described air inlet tube is at the caliber of the mixing tube insertion position caliber greater than other position of air inlet tube, and the airflow area that causes with the insertion of avoiding because of mixing tube reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202992780U CN201778916U (en) | 2010-08-17 | 2010-08-17 | Engine EGR mixing tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202992780U CN201778916U (en) | 2010-08-17 | 2010-08-17 | Engine EGR mixing tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201778916U true CN201778916U (en) | 2011-03-30 |
Family
ID=43792129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202992780U Expired - Fee Related CN201778916U (en) | 2010-08-17 | 2010-08-17 | Engine EGR mixing tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201778916U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953867A (en) * | 2011-08-29 | 2013-03-06 | 广西玉柴机器股份有限公司 | Engine air inlet pipe |
| CN115219202A (en) * | 2021-04-14 | 2022-10-21 | 广州汽车集团股份有限公司 | Inner insertion tube type selection test device, inner insertion tube type selection method and device |
-
2010
- 2010-08-17 CN CN2010202992780U patent/CN201778916U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953867A (en) * | 2011-08-29 | 2013-03-06 | 广西玉柴机器股份有限公司 | Engine air inlet pipe |
| CN115219202A (en) * | 2021-04-14 | 2022-10-21 | 广州汽车集团股份有限公司 | Inner insertion tube type selection test device, inner insertion tube type selection method and device |
| CN115219202B (en) * | 2021-04-14 | 2023-09-15 | 广州汽车集团股份有限公司 | Internally inserted pipe type selection test device, and internally inserted pipe type selection method and device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20160817 |