CN202789203U - Connecting pipe and exhaust gas recirculation (EGR) system using the same - Google Patents
Connecting pipe and exhaust gas recirculation (EGR) system using the same Download PDFInfo
- Publication number
- CN202789203U CN202789203U CN2012203381232U CN201220338123U CN202789203U CN 202789203 U CN202789203 U CN 202789203U CN 2012203381232 U CN2012203381232 U CN 2012203381232U CN 201220338123 U CN201220338123 U CN 201220338123U CN 202789203 U CN202789203 U CN 202789203U
- Authority
- CN
- China
- Prior art keywords
- connecting pipe
- egr
- gas recirculation
- pipe
- utility
- 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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- 239000007789 gas Substances 0.000 abstract description 16
- 239000002912 waste gas Substances 0.000 abstract description 10
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract description 3
- 230000001131 transforming effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008676 import Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
Images
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
本实用新型的目的是提出一种有助于提高EGR均匀性的连接管及应用该连接管的EGR废气再循环系统。本实用新型的连接管包括一波纹管，所述波纹管的两端均设有法兰，关键在于所述波纹管的一端延伸至法兰外而形成导流结构。本实用新型提出的应用上述连接管的EGR废气再循环系统如下：所述连接管利用其两端的法兰分别与发动机的进气歧管和EGR冷却器或者缸盖相接，所述连接管的导流结构伸入至进气歧管内。本实用新型通过将传统的连接管改造为带有导流结构的连接管，可以对导入进气歧管的EGR废气进行导流，使其能够更好的混入新鲜空气，提高了EGR废气各缸分配的均匀性，燃烧更加稳定，从而提高了发动机的燃油经济性，降低了发动机的排放。
The purpose of the utility model is to propose a connecting pipe which helps to improve the uniformity of EGR and an EGR waste gas recirculation system using the connecting pipe. The connecting pipe of the utility model includes a corrugated pipe, flanges are provided at both ends of the corrugated pipe, and the key point is that one end of the corrugated pipe extends out of the flange to form a flow guide structure. The EGR waste gas recirculation system using the above-mentioned connecting pipe proposed by the utility model is as follows: the flanges at both ends of the connecting pipe are respectively connected to the intake manifold of the engine and the EGR cooler or the cylinder head, and the connecting pipe's The guide structure extends into the intake manifold. The utility model can guide the EGR exhaust gas introduced into the intake manifold by transforming the traditional connecting pipe into a connecting pipe with a diversion structure, so that it can better mix with fresh air and improve the efficiency of each cylinder of the EGR exhaust gas. The distribution is even and the combustion is more stable, thereby improving the fuel economy of the engine and reducing the emission of the engine.
Description
Technical field
The utility model belongs to engines exhaust gas recirculation (EGR) technical field, specially refers to a kind of connecting tube and uses the EGR gas recirculation system of this connecting tube.
Background technique
Increasingly strict along with Abgasgesetz, emission control technique also is faced with more and more challenges.EGR is that a part of exhaust with motor is incorporated into and participates in burning in the gas handling system, the thermal capacitance of mixed gas is increased greatly, maximum combustion temperature descends, thereby reduces discharging and the oil consumption of nitrogen oxide, and EGR (EGR) system was widely used in the last few years.
The structure that existing egr system connects used connecting tube is as follows: the middle part of connecting tube is bellows, and its two ends are provided with flange, to be used for intake manifold and cooler for recycled exhaust gas or the cylinder cap of connecting engine.Although this kind EGR connecting tube manufacturing process is simple, does not have guide functions for sneaking into of EGR waste gas, therefore easily causes each cylinder distributing uniformity of EGR waste gas poor, thereby the combustion stability of motor is affected.
Summary of the invention
The purpose of this utility model is to propose a kind of EGR gas recirculation system that helps to improve the inhomogeneity connecting tube of EGR and use this connecting tube.
Connecting tube of the present utility model comprises a bellows, and the two ends of described bellows are equipped with flange, and key is that an end of described bellows extends to flange and forms flow guide structure outward.
Specifically, described flow guide structure is bell mouth shape or sheet or curved surface.
The EGR gas recirculation system of the above-mentioned connecting tube of application that the utility model proposes is as follows: the flange that described connecting tube utilizes its two ends joins with the intake manifold of motor and cooler for recycled exhaust gas or cylinder cap respectively, and key is that the flow guide structure of described connecting tube stretches in the intake manifold.
Further, the flow guide structure that described each connecting tube stretches in the various inlet manifold is different, the length of for example saying flow guide structure adjusts according to different borders with terminal water conservancy diversion shape, thereby the air-flow in the various inlet manifold is produced Different Effects, improve the uniformity that each cylinder of EGR waste gas distributes.
The utility model is by transforming traditional connecting tube as the connecting tube with flow guide structure, can carry out water conservancy diversion to the EGR waste gas that imports intake manifold, can better sneak into fresh air, improved the uniformity that each cylinder of EGR waste gas distributes, it is more stable to burn, thereby improved the fuel economy of motor, reduced the discharging of motor.
Description of drawings
Fig. 1 is the structural representation of EGR gas recirculation system of the present utility model.
Fig. 2 is the phantom of EGR gas recirculation system of the present utility model.
Embodiment
The below contrasts accompanying drawing, by the description to embodiment, the effect of the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and working principle etc. are described in further detail.
Embodiment 1:
As shown in Figure 1, 2, the connecting tube 1 of present embodiment comprises a bellows 11, and the two ends of bellows 11 are equipped with flange 12, and an end of bellows 11 extends to flange 12 and forms flow guide structure 13 outward.
The EGR gas recirculation system of the above-mentioned connecting tube of application that present embodiment proposes is as follows: the flange 12 that connecting tube 1 utilizes its two ends joins with intake manifold 2 and the cooler for recycled exhaust gas 3 of motor respectively, the flow guide structure 13 of connecting tube 1 stretches in the intake manifold 2, and each connecting tube 1 stretches to flow guide structure 13 differences in the various inlet manifold 2, the length of for example saying flow guide structure 13 adjusts according to different borders with terminal water conservancy diversion shape, thereby the air-flow in the various inlet manifold 2 is produced Different Effects, improve the uniformity that each cylinder of EGR waste gas distributes.
Above-mentioned EGR gas recirculation system adopts the connecting tube 1 with flow guide structure 13, can carry out water conservancy diversion to the EGR waste gas that imports intake manifold 2, can better sneak into fresh air, improved the uniformity that each cylinder of EGR waste gas distributes, it is more stable to burn, thereby improved the fuel economy of motor, reduced the discharging of motor.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203381232U CN202789203U (en) | 2012-07-13 | 2012-07-13 | Connecting pipe and exhaust gas recirculation (EGR) system using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203381232U CN202789203U (en) | 2012-07-13 | 2012-07-13 | Connecting pipe and exhaust gas recirculation (EGR) system using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789203U true CN202789203U (en) | 2013-03-13 |
Family
ID=47816478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203381232U Expired - Fee Related CN202789203U (en) | 2012-07-13 | 2012-07-13 | Connecting pipe and exhaust gas recirculation (EGR) system using the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789203U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234876A (en) * | 2013-06-17 | 2014-12-24 | 卡特彼勒公司 | System and method for exhaust gas re-circulation |
| CN104329195A (en) * | 2013-07-22 | 2015-02-04 | 通用汽车环球科技运作有限责任公司 | Engine Inlet For EGR-Air Flow Distribution |
| CN111648881A (en) * | 2020-07-08 | 2020-09-11 | 安徽华菱汽车有限公司 | An EGR connecting pipe assembly |
| CN113107717A (en) * | 2021-05-14 | 2021-07-13 | 宁波福士汽车部件有限公司 | Automobile EGR heat exchange pipeline |
| CN114215665A (en) * | 2021-11-02 | 2022-03-22 | 浙江吉利控股集团有限公司 | Exhaust gas intake pipe and exhaust gas recirculation system |
| CN115045780A (en) * | 2022-06-10 | 2022-09-13 | 哈尔滨东安汽车动力股份有限公司 | Arrangement structure for increasing low-pressure EGR (exhaust gas recirculation) coverage working condition |
-
2012
- 2012-07-13 CN CN2012203381232U patent/CN202789203U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234876A (en) * | 2013-06-17 | 2014-12-24 | 卡特彼勒公司 | System and method for exhaust gas re-circulation |
| CN104329195A (en) * | 2013-07-22 | 2015-02-04 | 通用汽车环球科技运作有限责任公司 | Engine Inlet For EGR-Air Flow Distribution |
| CN104329195B (en) * | 2013-07-22 | 2017-04-12 | 通用汽车环球科技运作有限责任公司 | Engine Inlet For EGR-Air Flow Distribution |
| CN111648881A (en) * | 2020-07-08 | 2020-09-11 | 安徽华菱汽车有限公司 | An EGR connecting pipe assembly |
| CN113107717A (en) * | 2021-05-14 | 2021-07-13 | 宁波福士汽车部件有限公司 | Automobile EGR heat exchange pipeline |
| CN114215665A (en) * | 2021-11-02 | 2022-03-22 | 浙江吉利控股集团有限公司 | Exhaust gas intake pipe and exhaust gas recirculation system |
| CN115045780A (en) * | 2022-06-10 | 2022-09-13 | 哈尔滨东安汽车动力股份有限公司 | Arrangement structure for increasing low-pressure EGR (exhaust gas recirculation) coverage working condition |
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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: 20130313 Termination date: 20150713 |
|
| EXPY | Termination of patent right or utility model |